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cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 1 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. description the cm6533 /cm6533n /cm6533x1/CM6533DH is a usb 2.0 audio chip buil t - in 8051 for flexible application s . with integrated tri - c olors pwm led driver and two ( 2 ) - channel adc / dac and s/pdif interface that makes it suit able for h eadset, d ocking, s peaker and m ic rophone applications. the internal 8051 can also be developed to a lot of different applications, such as microsoft ? lync / skype/voip device, android phone or tablet/slate do cking device . the cm6533 /cm6533n /cm6533x1 /CM6533DH is compatible with usb audio class 1.0 and usb 2.0 full - speed , thus it can plug & play without any additional software installation on major operati ng systems. the internal dac and adc support from 8 ~ 96 khz sampling rate and 16 /24 bit s resolution . the cm6533/cm6533n/cm6533x1/CM6533DH integrates e qualizer on both playback and recording paths to compe nsate the frequency response of mic rophone and headphone . the cm6533/cm6533n/cm6533x1/CM6533DH also integ rates 256k byte flash ( including 32kb f/w programming size) and crystal but requires few passive components to make a finish product. t hus, it can save the total bom cost and pcb area can be smaller. features ? usb 2. 0 f ull - s peed com pliant ? usb audio class 1.0 comp liant ? usb human interface device (hid) class 1.1 1 compliant ? two ( 2 ) - channel dac for audio output interface ? two ( 2 ) - channel adc for audio input interface ? support s digital microphone interface ? buil t - in s/pdif transmitter ? buil t - in equalizer on both playback and recording paths ? buil t - in agc (auto g ain c ontrol) on recording path ? support s dual tone generator ? support s usb suspend/resume/reset functions ? support s control, interrupt, bulk, and isochronous data transfers ? embedded 1t 8051 with 32k b yte sram and 256k byte flash(including 32kb f/w programming size) ? supports omtp and ctia auto switch on a 4 - pole jack ? integrated tri - c olors pwm led driver ? master /slave h/w i2c /spi /uart control interface for external audio devices or flash access ? support s embe dded oscillator without external crystal ? buil t - in 30mw @ r=32 ? headphone amplifier ? on chip watchdog timer block diagram c o n t r o l b u s 3 2 k b s r a m r o m ( 4 k b ) m c u w i t h 2 5 6 k b f l a s h a g c d a c m i c r o p h o n e i n s p e a k e r / h e a p h o n e s p d i f o u t g p i o x 1 2 p w m l e d x 3 u a r t , i 2 c , s p i u s b i n t e r f a c e 5 - b a n d e q a n a l o g g a i n - 4 4 ~ 0 d b ( 1 d b / s t e p ) a n a l o g g a i n - 1 8 ~ 4 5 d b ( 1 d b / s t e p ) a n a l o g g a i n - 1 5 ~ 3 2 d b ( 1 d b / s t e p ) 5 - b a n d e q a d c a n a l o g g a i n - 3 0 ~ 3 3 d b ( 1 d b / s t e p ) m u x d i g i t a l g a i n - 6 2 ~ 0 d b ( 1 d b / s t e p ) d i g i t a l g a i n - 1 6 ~ 1 2 d b ( 1 d b / s t e p ) i n t e r n a l c l o c k + 1 2 d b
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 2 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. release notes revision date description 1 . 0 201 4 / 0 7 / 08 first release . 1.1 2014/08/05 modify f/w v olume setting t able (ch2.6) . 1.2 2014/09/18 1. modify pin descriptions . 2. modify pin out diagram. 1.3 2014/09/19 1. modify mic_swout to ao pin. 2. modify power consumption for 12mhz mcu clock. 3. modify reset diagram of ch6.13. 4. separate cm6533/cm6533x1/CM6533DH pin out diagram. 5. modify flash description: 256k byte flash(including 32kb f/w programming size) . 1. 4 201 5 / 3 / 30 1. remove microphone input impedance chart. 2. add xear and dolby software function descriptions.(ch7,ch8) 3. modify operating ambient temperature to - 15~70 o c . 4. modify ch5.1 ch5.2 usb topology chart . 5. modify block diagram (page1). 6. add cap - less cross talk performance. 7. add cm6533n qfn package. 1. 5 2015/08/07 1. modify ch6.7 digital microphone descriptions. 1.6 2015/10/29 1. modify i2c using example 2. modify spi using example
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 3 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. table of contents release notes ................................ ................................ ................................ .. 2 table of contents ................................ ................................ ........................... 3 1 description and overview ................................ ................................ ............... 6 2 features ................................ ................................ ................................ .... 6 2.1 usb compliance ................................ ................................ ................ 6 2.2 integrated 8051 microprocessor ................................ ............................. 6 2.3 control interface ................................ ................................ .............. 6 2.4 general ................................ ................................ .......................... 6 2.5 audio i/o ................................ ................................ ........................ 7 2.6 general firmware volume setting value ................................ ................... 8 2.7 cm6533/cm6533n/cm6533x1/CM6533DH compared table .............................. 8 3 applications ................................ ................................ ............................... 9 4 pin assignment ................................ ................................ ........................... 10 4.1 cm6533 pin - out diagram (lqfp48) ................................ ......................... 10 4.2 cm6533n pin - out diagram (qfn48) ................................ ........................ 11 4.3 cm6533x1 pin - out diagram (lqfp48) ................................ ...................... 12 4.4 CM6533DH pin - out diagram (lqfp48) ................................ ...................... 13 4.5 pin description ................................ ................................ ................ 14 4.6 pin circ uit diagrams ................................ ................................ .......... 17 5 usb audio topology ................................ ................................ ...................... 18 5.1 cm6533n/cm6533 headset topology ................................ ....................... 18 5.2 cm6533x1/CM6533DH headset topology ................................ .................. 19 6 function description ................................ ................................ .................... 20 6.1 playback equalizer ................................ ................................ ........... 20 6.1.1 5 - band equalizer ................................ ................................ ........ 20 6.1.2 four (4) preset eq mode ................................ ................................ 22 6.2 recording equalizer ................................ ................................ .......... 23 6.3 reco rding agc ................................ ................................ ................. 23 6.4 hid function ................................ ................................ ................... 25 6.4.1 hid interrupt in ................................ ................................ .......... 25 6.4.2 hid get_input_report ................................ ................................ ... 26 6.4.3 hid set_output_report ................................ ................................ .. 27 6.5 vendor command def inition ................................ ................................ 28 6.5.1 vendor command read ................................ ................................ . 28 6.5.2 vendor command write ................................ ................................ 28 6.5.3 usb vendor requests ................................ ................................ .... 28 6.5.4 simple process of firmware update ................................ .................. 29
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 4 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.6 spdif control description ................................ ................................ ... 30 6.6.1 spdif frame description ................................ ............................... 30 6. 6.2 spdif out channel status ................................ .............................. 31 6.7 digital microphone ................................ ................................ ............ 32 6.8 i2c interface ................................ ................................ ................... 33 6.8.1 i2c master mode ................................ ................................ ......... 33 6.8.2 i2c - master read with clk_sync mode ................................ ................. 34 6.8.3 i2c master device address and control register ................................ .... 34 6.8.4 i2c master memory address pointer (map) register ................................ 34 6.8.5 i2c master memory address pointer (map2) register ............................... 34 6.8.6 i2c master data register ................................ ............................... 35 6.8.7 i2c master control and status register 0 ................................ ............ 35 6.8.8 i2c master control and status register 1 ................................ ............ 35 6.8.9 i2c master download control and status register ................................ .. 36 6.8.10 i2c master clock period setting register ................................ ............ 37 6.8.11 i2c slave mode ................................ ................................ ........... 38 6.8.12 i2c slave data register ................................ ................................ . 38 6.8.13 i2c slave status register ................................ ............................... 38 6.8.14 i2c slave memory address pointer(map) register ................................ ... 39 6.8.15 i2c slave status register ................................ ............................... 39 6.8.16 i2c using example ................................ ................................ ....... 40 6.9 spi interface ................................ ................................ ................... 41 6.9.1 spi cont rol register 0 ................................ ................................ ... 41 6.9.2 spi control register 1 ................................ ................................ ... 41 6.9.3 spi interrupt ................................ ................................ ............. 42 6.9.4 spi control register 3 ................................ ................................ ... 42 6.9. 5 spi using example ................................ ................................ ....... 43 6.10 gpio ................................ ................................ ............................ 44 6.10.1 gpo data register ................................ ................................ ....... 44 6.10.2 gpi data register ................................ ................................ ........ 44 6.10.3 gpio direction control register ................................ ....................... 44 6.10.4 gpio interrupt enable mask register ................................ ................. 44 6.10.5 gpio debouncing register ................................ ............................. 44 6.10.6 gpi remote choose ................................ ................................ ..... 45 6.10.7 g pio pull - up/down ................................ ................................ ..... 45 6.11 arbitrary sine - tone generator ................................ .............................. 47 6.12 tri - colored led control setting ................................ ............................ 48 6.13 reset ................................ ................................ ............................ 49 6.13.1 watchdog reset timer ................................ ................................ .. 49 7 cm6533x1 xear? sound processing ................................ ................................ .... 50
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 5 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 7.1 xear? surround headphone ................................ ................................ . 50 7.2 xear? software 10 band equalizer ................................ ......................... 50 7.3 xear? audio brilliant ................................ ................................ ......... 50 7.4 xear? dynamic bass ................................ ................................ .......... 50 7.5 xear? voice clarity ................................ ................................ ........... 50 7.6 xear? smart volume ................................ ................................ ......... 50 7.7 xear? surround max ................................ ................................ .......... 50 7.8 xear? magic voice ................................ ................................ ............ 50 7.9 xear? environmental noise cancellation ................................ ................. 51 8 CM6533DH dolby? and xear? sound processing ................................ .................... 51 8.1 dolby? headphone v2 ................................ ................................ ........ 51 8.2 dolby? pro logic iix ................................ ................................ .......... 51 8.3 xear? environment effect ................................ ................................ ... 51 8.4 xear? software 10 band equalizer ................................ ......................... 51 8.5 xear? magic voice ................................ ................................ ............ 51 9 electrical characteristics ................................ ................................ ............... 52 9.1 absolute maximum ratings ................................ ................................ .. 52 9.2 recommended operation conditions ................................ ...................... 52 9.3 power consumption ................................ ................................ .......... 52 9.4 dc characteristics ................................ ................................ ............ 52 9.5 analog audio ................................ ................................ ................... 53 9.6 usb transceiver ................................ ................................ ............... 53 9.7 micropho ne bias ................................ ................................ ............... 53 10 audio performance ................................ ................................ ................. 54 10.1 dac audio quality ................................ ................................ ............ 54 10.2 adc audio quality ................................ ................................ ............ 55 10.3 analog monitoring / sidetone (a - a ) path audio quality ................................ 56 11 package dimension ................................ ................................ ................. 57 11.1 package dimension of cm6533/6533x1/6533dh ................................ ......... 58 11.2 package dimension of cm6533n ................................ ............................ 59
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 6 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 1 description and o verview the cm6533/cm6533n/cm6533x1/CM6533DH is a usb 2.0 audio chip buil t - in 8051 for flexible application s . with integrated tri - c olors pwm led driver and two ( 2 ) - channel adc / dac and s/pdif interface makes it suit able for h eadset, d ocking, s peaker and m ic rophone applications. the internal 8051 can also be developed to a lot of different applications, such as microsoft ? lync /skype/voip device, android phone or tablet/slate docking device . the cm6533/cm6533n/cm6533x1/CM6533DH is compatible with usb audio class 1.0 and usb 2.0 full - speed , thus it can plug & play without any additional software installation on major operati ng systems. the internal dac and adc support from 8 ~ 96 khz sampling rate and 16 /24 bit s resolution . the hardware of cm6533 , cm6533n , cm 6533x1 and CM6533DH are all the same and they only differ in firmware and software. the cm6533/cm6533n/cm6533x1/CM6533DH integrates e qualizer on both playback and recording paths to compe nsate the frequency response of mic rophone and headphone . the cm6533/cm6533n/cm6533x1/CM6533DH also integrates 256 k b yte flash (including 32kb f/w programming size) and crystal but requires few passive components to make a finish product. t hus, it can save the total bom cost and pcb area can be smaller. 2 features 2.1 usb c ompliance ? usb 2.0 full - speed compliant ? usb audio class 1.0 compliant ? usb human interface device (hid) class 1.1 compliant ? supports usb suspend/resume/reset functions ? supports control, interrupt, bulk, and isochronous data transfers and o verview 2.2 integ rated 8051 microprocessor ? embedded 8051 micro - processor to handle the comm and /protocol transactions ? embedded 256 k b yte spi flash (including 32kb f/w programming size) ? 32k byte ram for firmware extension and plug - in ? hid interrupts /buttons/functions can be implemented via firmware codes ? provides maximum h ardware configur ed flexibility with firmware code upgrade ? vid/pid/product string can program by firmware 2.3 control i nterface ? master /slave i2c control interface , bus speed supports 100 and 400kbit/s ? on e 4 - wire spi mater/slave interface , bus speed supports from 150k to 12mbit/s ? 12 gpio pins and firmware program mable ? jtag debug interface ? gpios are configured as hid key and led indicators ? tri - c olor s pwm led driver 2.4 general ? c rystal - less (embedded c rystal fu nction)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 7 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. ? single 5 v power supply (embedded 5 v to 1.8 v regulator for digital core , 5v to 3.3v regulator for digital io, 5v to 3. 6 v regulator for analog codec ) ? 3.3v digital i/o pads with 5v tolerance ? industrial standard lqfp - 48 package ( 7 x 7 mm) 2.5 audio i/o ? playback stream: ? speaker/headphone ? sample rates: 8k/11.025k/16k/22.05k/32k/ 44.1k/48k /88.2k/96k hz ? support s bit length: 16 /24 bit s ? speaker gain range (analog) is - 44 ~ 0db, 1db/step ? dac gain range ( d igital) is - 62 ~ 0db, 1db/step ? s/pdif transmitter ? sample rates: 44.1k/48k /88.2k /96k hz ? supports bit length: 16/24 bits ? recording stream : ? microphone ? sample rates: 8k/11.025k/16k/22.05k/32k/ 44.1k/48k /96k hz ? support s bit length: 16 /24 bits ? microphone gain range (analog) is - 18 ~ 45 db, 1db/step ? adc gain range ( d igital) is - 16 ~ 12 db, 1db/step ? stereo mixer ? mix stereo playback stream and stereo microphon e ? stereo mixer gain range is - 30 ~ 33 db, 1db/step ? a - a path stream : ? microphone to playback a - a path ? mix mono microphone input to stereo playback both l/r channel ? the microphone a - a path gain range is - 1 5 ~ 3 2db, 1db/step * * note 1 : a - a path means analog to analog mixer path **note 2: cm6533/cm6533n/cm6533x1/CM6533DH is a usb 2.0 full speed audio device. since bandwidth limitation, cm6533/cm6533n/cm6533x1/CM6533DH cannot support 96khz/24bits for playback and capture streams simultaneously. the possible combinations are shown below: playback capture audio format stereo, 96khz/24bits s tereo, 48khz/24bits or below mono, 96khz/24bits or below s tereo, 48khz/24bits or below 96khz/24bits mono, 96khz/24bits or below
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 8 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 2.6 genera l f irmware v olume s etting v alue the cm6533/cm6533n/cm6533x1/CM6533DH is a mcu base usb audio device; the default topology is different from its h ardware capability. p lease refer to chapter 5.1 and 5.2 for the cm6533/cm6533n/cm6533x1/CM6533DH default topology while below the gain volume range. device minimum maximum default db/step speaker - 45 db (mute) 0db - 10db 1db mic rophone in rec ording vol ume 0db +30db +20db 1db mic rophone a - a path (playback) - 15db (mute) +22db 0db 1db 2.7 cm6533 / cm6533 n /cm6533x1/CM6533DH c ompared t able the pin out of cm6533 , cm6533 n , cm6533x1 and CM6533DH are all the same and they only differ in firmware , software and package . cm6533 n cm6533 cm6533x1 CM6533DH package qfn 48 lqfp48 lqfp48 lqfp48 firmware optional jack detection optional jack detection -- -- software jack detection xear? surround hp ? software functions : ? cm6533 x1 xear? sound processing ? xear? surround headphone ? xear? software 10 band equalizer ? xear? audio brilliant ? xear? dynamic bass ? xear? voice clarity ? xear? smart volume ? xear? surround max ? xear? magic voice ? xear? environmental noise cancellation ? CM6533DH dolby? and xear ? sound processing ? dolby ? headphone v2 ? dolby pro logic? ii x ? xear? environment effect ? xear? software 10 band equalizer ? xear? magic voice
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 9 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 3 applications ? usb headset /gaming headset ? microsoft ? l yn c /skype voip headset ? notebook/netbook docking ? android phone/slate docking ? usb speaker ? usb mic rophone
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 10 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4 pin a ssignment 4.1 cm6533 pin - out d iagram (lqfp48) c m 6 5 3 3 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 4 8 4 7 4 6 4 5 4 2 4 3 4 4 3 9 4 0 4 1 3 7 3 8 3 6 2 5 3 2 3 3 3 4 3 5 2 6 2 7 2 8 2 9 3 0 3 1 l o c o m l o u t r m i c _ s w o u t v o l a d j a g n d m b i a s l l o u t l d v d d 1 8 d v d d 5 0 u s b _ d m u s b _ d p v s s d v d d 3 3 s p d i f _ o t e s t p d s w g p i o _ 0 g p i o _ 1 i 2 c _ s c l k g p i o _ 2 i 2 c _ s d a t s p i _ m i s o g p i o _ 6 g p i o _ 7 g p i o _ 3 g p i o _ 4 g p i o _ 5 g p i o _ 8 g p i o _ 1 0 g p i o _ 9 g p i o _ 1 1 m i c l m i c r _ r i n g 2 s p i _ m o s i s p i _ c s 0 s p i _ s c k v s s m b i a s r _ s l e e v e a g n d a v d d 3 6 a v d d 5 0 a v 4 2 _ d a v a g v s s a v 3 6 _ d a r a g n d _ d a r a g n d _ d a l a v 3 6 _ d a l
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 11 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4.2 cm6533n pin - out d iagram (qfn48) c m 6 5 3 3 n 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 4 8 4 7 4 6 4 5 4 2 4 3 4 4 3 9 4 0 4 1 3 7 3 8 3 6 2 5 3 2 3 3 3 4 3 5 2 6 2 7 2 8 2 9 3 0 3 1 l o c o m l o u t r m i c _ s w o u t v o l a d j a g n d m b i a s l l o u t l d v d d 1 8 d v d d 5 0 u s b _ d m u s b _ d p v s s d v d d 3 3 s p d i f _ o t e s t p d s w g p i o _ 0 g p i o _ 1 i 2 c _ s c l k g p i o _ 2 i 2 c _ s d a t s p i _ m i s o g p i o _ 6 g p i o _ 7 g p i o _ 3 g p i o _ 4 g p i o _ 5 g p i o _ 8 g p i o _ 1 0 g p i o _ 9 g p i o _ 1 1 m i c l m i c r _ r i n g 2 s p i _ m o s i s p i _ c s 0 s p i _ s c k v s s m b i a s r _ s l e e v e a g n d a v d d 3 6 a v d d 5 0 a v 4 2 _ d a v a g v s s a v 3 6 _ d a r a g n d _ d a r a g n d _ d a l a v 3 6 _ d a l
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 12 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4.3 cm6533 x1 pin - out d iagram (lqfp48) c m 6 5 3 3 x 1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 4 8 4 7 4 6 4 5 4 2 4 3 4 4 3 9 4 0 4 1 3 7 3 8 3 6 2 5 3 2 3 3 3 4 3 5 2 6 2 7 2 8 2 9 3 0 3 1 l o c o m l o u t r m i c _ s w o u t v o l a d j a g n d m b i a s l l o u t l d v d d 1 8 d v d d 5 0 u s b _ d m u s b _ d p v s s d v d d 3 3 s p d i f _ o t e s t p d s w g p i o _ 0 g p i o _ 1 i 2 c _ s c l k g p i o _ 2 i 2 c _ s d a t s p i _ m i s o g p i o _ 6 g p i o _ 7 g p i o _ 3 g p i o _ 4 g p i o _ 5 g p i o _ 8 g p i o _ 1 0 g p i o _ 9 g p i o _ 1 1 m i c l m i c r _ r i n g 2 s p i _ m o s i s p i _ c s 0 s p i _ s c k v s s m b i a s r _ s l e e v e a g n d a v d d 3 6 a v d d 5 0 a v 4 2 _ d a v a g v s s a v 3 6 _ d a r a g n d _ d a r a g n d _ d a l a v 3 6 _ d a l
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 13 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4.4 cm6533 dh pin - out d iagram (lqfp48) c m 6 5 3 3 d h 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 4 8 4 7 4 6 4 5 4 2 4 3 4 4 3 9 4 0 4 1 3 7 3 8 3 6 2 5 3 2 3 3 3 4 3 5 2 6 2 7 2 8 2 9 3 0 3 1 l o c o m l o u t r m i c _ s w o u t v o l a d j a g n d m b i a s l l o u t l d v d d 1 8 d v d d 5 0 u s b _ d m u s b _ d p v s s d v d d 3 3 s p d i f _ o t e s t p d s w g p i o _ 0 g p i o _ 1 i 2 c _ s c l k g p i o _ 2 i 2 c _ s d a t s p i _ m i s o g p i o _ 6 g p i o _ 7 g p i o _ 3 g p i o _ 4 g p i o _ 5 g p i o _ 8 g p i o _ 1 0 g p i o _ 9 g p i o _ 1 1 m i c l m i c r _ r i n g 2 s p i _ m o s i s p i _ c s 0 s p i _ s c k v s s m b i a s r _ s l e e v e a g n d a v d d 3 6 a v d d 5 0 a v 4 2 _ d a v a g v s s a v 3 6 _ d a r a g n d _ d a r a g n d _ d a l a v 3 6 _ d a l
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 14 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4.5 pin d escription pin # symbol i/o description usb2.0 bus interface 7 usb_dp aio usb 2.0 data positive (usb d+ signal) . 8 usb_dm aio usb 2.0 data negative (usb d - signal) . power/ground 9 dvdd33 ao regulator 3.3v output , drive capacity 10ma . 10 dvdd18 ao regulator 1.8v output , no current drive capacity . 11 dvdd50 pwr 5v digital power for 5/3.3/1.8v regulator . 22 avdd36 ao analog 3.6v regulator for adc , no current drive capacity . 23 avdd50 pwr 5v analog power for 4.2/3.6v regu lator . 24 av42_da ao analog 4.2v regulator for analog 3.6v regulator , no current drive capacity . 25 av36_dal ao analog 3.6v regulator for dac left channel , no current drive capacity . 31 av36_dar ao analog 3.6v regulator for dac right channel , no current drive capacity . 6 vss gnd digital ground . 12 vss gnd digital ground . 42 vss gnd digital ground . 13 agnd gnd analog ground . 21 agnd gnd analog ground . 27 agnd_dal gnd analog ground . 29 agnd_dar gnd analog ground . audio interface 18 mic_swout a o combo jack detect and auto switch, detect combo jack type and switch to micr_ring2 or mbiasr_sleeve . 15 micl ai microphone in left channel . 19 micr_ring2 ai microphone in right channel or combo jack ring2 pin input . 16 mbiasl ao microphone bias (2.75v) for left channel . 20 mbiasr_sleeve ao microphone bias (2.75v) for right channel or combo jack sleeve pin input . 17 vag ao voltage reference cap filter . 26 loutl ao line out left channel . 28 locom ao line out common reference for cap - less connection . suggest ed connection s : cap - less: 10uf none use: floating 30 loutr ao line out right channel . 14 voladj ai analog control voltage in put for playback volume control . sar adc digital input range: sarad<5:0> 000000:maxium ------ 27.3mv 111111:minium ------- 1.75v (27.3mv/1step) s/pdif i/o 36 spdif_o do s/pdif transmitter spdif_o is an output buffer with 8ma tri - state . gpio 1 gpio_0 dio general purpose input/output (default volume up button ) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . (jtag - tck) 48 gpio_1 dio general purpose input/output (default volume down button ) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . (jtag - tms) 47 gpio_2 dio general purpose input/output (default play mute button ) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . (jtag - tdi)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 15 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 39 gpio_3 dio general purpose input/output (default rec mute button ) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 38 gpio_4 dio programmable 2 in 1 i/o interface. gpio / pwm s elect by firmware . general purpose input/output (default pwm led blue) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 37 gpio_5 dio programmable 2 in 1 i/o interface. gpio / pwm s elect by firmware . general purpose input/output (default pwm led green) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 41 gpio_6 dio programmable 2 in 1 i/o interface. gpio / pwm s elect by firmware . general purpose input/output (default pwm led re d ) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . (jtag - trst) 40 gpio_7 dio general purpose input/output (jtag - tdo). 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default eq disable weak pull - up for input . there are 4 kinds of preset eq, gpio7 and 8 are used to determine in which mode . t he combinations are shown below. gpio[8:7]=0,0: normal mode gpio[8:7]=0,1: gaming mode gpio[8:7]=1,0: communication mode gpio[8:7]=1,1: movie mode eq function can enable via configuration tool or firmware . 35 gpio_8 dio general purpose input/output 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default eq disable weak pull - up for input . 34 gpio_9 dio general purpose input/output (default rec clip indicator) . 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 33 gpio_10 dio programmable 3 in 1 i/o interface. gpio / digital mic clock ( dmic_clk ) / mcu_trx select by firmware . gpio (default mic jack detect): 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 32 gpio_11 dio programmable 3 in 1 i/o interface. gpio / digital mic data ( dmic_dat ) / uart rx input( mcu_rxd ) select by firmware . gpio (default headphone jack detect): 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 4 - wire spi serial bus 43 spi_miso dio spi data master in/slave out , 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - down for input . 44 spi_mosi dio spi data master out/slave in , 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - down for input . 45 spi_cs0 dio spi chip select , 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - up for input . 46 spi_sck dio spi clock , 3.3v i/o, 5v tolerance, bidirectional buffer with 8ma driving current, default weak pull - down for input . 2 - wire serial bus (i2c) 5 i2c_sdat dio 2 - wire serial data , 3.3v i/o, 5v tolerant, bidirectional buffer with 8ma driving current, default weak pull - up for input .
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 16 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4 i2c_sclk dio 2 - wire serial clock , 3.3v i/o, 5v tolerant, bidirectional buffer with 8ma driving current, default weak pull - up for input . miscellaneous 2 pdsw do power down switch is an output buffer with 8ma tri - state output . normal mode: 0 suspend mode: 1 3 test di the test pin is use d for ic test, another one is in the situation when f/w was crash or usb was not recognized , set test pin to 3.3v before usb connect can force mcu into boot loader mode and able to update f/w via configuration tool , default weak pull - down for input. 1: boot loader mode 0 or floating: normal operation **note: gpios, i2c, spi, spdif , mic_swout, micl , micr_ring2, mbiasl, mbiasr_sleeve, vag, loutl, locom, loutr, voladj, pdsw, test pins can be left floating if not in use.
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 17 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4.6 pin c ircuit d iagrams vag, mic_bais analog input pins line, mic output pins loutl, loutr output pins loutl, loutr a g n d v a g v s s a d c a g n d a g n d l o u t _ n v r e g v d d v s s
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 18 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 5 usb a udio t opology 5.1 cm6533n/ cm6533 h eadset t opology usb interfaces list interface description endpoint interface 0 audio control interface interface 1 audio stream interface for playback 0x01 interface 2 audio stream interface for record 0x82 interface 3 hid interface 0x87(interrupt in 16 bytes) audio stream interfaces alternate setting list interface 1 (speaker) alt 1 2 ch, 16bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 2 2 ch, 24 bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 3 2ch, 16bits pcm 88.2k,96k alt 4 2ch, 24 bits pcm 88.2k,96k interface 2 (mic in) alt 1 2ch, 16bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 2 2ch, 24 bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 3 2ch, 16bits pcm 88.2k,96k alt 4 2ch, 24 bits pcm 88.2k,96k s p e a k e r 2 c h o u t u s b s t r e a m i n g i n t e r f a c e # 1 0 1 0 5 0 3 o t i t m u t e c o n t r o l v o l u m e c o n t r o l - 4 5 d b ( m u t e ) ~ 0 d b m i c r o p h o n e 2 c h i n 0 2 0 4 o t i t u s b s t r e a m i n g i n t e r f a c e # 2 0 6 0 8 m i x e r 0 7 ? m u t e c o n t r o l v o l u m e c o n t r o l 0 d b ~ 3 0 d b m u t e c o n t r o l v o l u m e c o n t r o l - 1 5 d b ( m u t e ) ~ 2 2 d b
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 19 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 5.2 cm6533x1 / cm6533 dh h eadset t opology usb interfaces list interface description endpoint interface 0 audio control interface interface 1 audio stream interface for playback 0x01 interface 2 audio stream interface for record 0x82 interface 3 hid interface 0x87 (interrupt in 16 bytes) audio stream interfaces alternate setting list interface 1 (speaker) alt 1 2 ch, 16bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 2 2 ch, 24 bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 3 2ch, 16bits pcm 88.2k,96k alt 4 2ch, 24 bits pcm 88.2k,96k alt 5 2ch, 16bits ac3 44.1k,48k interface 2 (mic in) alt 1 2ch, 16bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 2 2ch, 24 bits pcm 8k,11.025k,16k,22.05k,32k ,44.1k,48k alt 3 2ch, 16bits pcm 88.2k,96k alt 4 2ch, 24 bits pcm 88.2k,96k s p e a k e r 2 c h o u t u s b s t r e a m i n g i n t e r f a c e # 1 0 1 0 5 0 3 o t i t m u t e c o n t r o l v o l u m e c o n t r o l - 4 5 d b ( m u t e ) ~ 0 d b m i c r o p h o n e 2 c h i n 0 2 0 4 o t i t u s b s t r e a m i n g i n t e r f a c e # 2 0 6 0 8 m i x e r 0 7 ? m u t e c o n t r o l v o l u m e c o n t r o l 0 d b ~ 3 0 d b m u t e c o n t r o l v o l u m e c o n t r o l - 1 5 d b ( m u t e ) ~ 2 2 d b
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 20 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6 function d escription 6.1 playback e qualizer 6.1.1 5 - band equalizer cm65 33 /cm6533n / cm65 33x1/CM6533DH has integrated five ( 5 ) - band hardware digital equalizer (eq) engine inside the chips to fulfill various application usages. it provides up to four ( 4 ) - preset modes on c lient s product design for different user scenarios including default/music, movies , g am ing and communication modes. c lient s could also change the gain parameters for each of the preset application eq mode via embedded flash coding. also , the eq engine could also be utilized for compensating and fine - tuning the headphone driver for sound pressure level ( spl ) performance to a s pecific preference . in this case, c lient s could fully customize all eq coefficients such as center frequenc y , gain values, and bandwidth to one optimized frequency response curve and setting in terms of the headphone driver and housings acoustics characte ristics , also via embedded flash programming . the eq engine contains five ( 5 ) frequency bands (fc) of digital filters to conduct transfer functions of the frequency response over the audio band. it allows maximum + - 12db digital gain (gain) for each band with 0.5db adjustment per step. each filter will have its bandwidth (bw) fa ctor between 0 and 1.0. fc: center frequency, f1~f5, 20 cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 21 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. with the four ( 4 ) - preset eq modes, c lient s could use embedded flash parameters to change the gain values for each band of the center frequency and hence customize the four ( 4 ) - preset eq curves based on the preset center frequencies and bandwidth. alternatively, c lient s could also skip the four ( 4 ) preset mo des and create a customized eq curve by changing the center frequencies, gain values and even the bandwidth factors in embedded flash parameters to make the headphone sound better or meet some frequency requirements. however, in this case, the product will always use one optimized eq setting and could not allow users to dynamically change into different preset modes. c lients could also consider reporting treble/bass feature unit by embedded flash to windows uaa driver to allow end - users to adjust bass (f1) and treble (f5) by themselves. therefore there are three usage/application scenarios as shown by the summary table below: 3 eq usage /application scenarios no scenario gain value center frequency / bandwidth factor number of modes user control type 1 4 switchable presets configurable fixed 4 hardware 2 full - customized eq configurable configurable 1 n.a. 3 treble/bass feature unit configurable configurable 1 software ** note: hardware user control type means end - users could select which eq mode they a re going to use by a hardware switch/button on the product; s oftware control means they could control the treble/bass gain values by gui in windows os sound device advanced settings.
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 22 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.1.2 four ( 4 ) p reset eq m ode as mentioned above, eq engine already provides four ( 4 ) - preset eq modes for different user scenarios/applications. the eq function default was disable but it can enable via configuration tool or firmware, e nd users could use the hardware switch on the product (determined by 2 eq configuration input pins) to dynamically change to different eq modes. the following shows the frequency response of each mode. mode gpio8 gpio7 color default 0 0 ---------------- gaming 0 1 ---------------- communication 1 0 ---------------- movie 1 1 ---------------- d efault c ommunication m ovie gaming audio precision 04/20/11 15:35:35 da-eq-spdif_in_da_out.at27 color sweep trace line style thick data axis comment 1 1 red solid 2 anlr.ampl left 00 2 1 magenta solid 2 anlr.ampl left 11 3 1 cyan solid 2 anlr.ampl left 10 4 1 blue solid 2 anlr.ampl left -10 +1 -9 -8 -7 -6 -5 -4 -3 -2 -1 -0 d b r a 20 20k 50 100 200 500 1k 2k 5k 10k hz
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 23 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.2 recording e qualizer cm6533/cm6533n/cm6533x1/CM6533DH also provide five ( 5 ) - band e qualizer for the input. it can be used to compensate the frequency response of m icrophone unit. c lient s could fully customize all eq coefficients (center frequency, gain values, and bandwidth) through embedded flash . 6.3 recording agc automatic gain control (agc) is an automatically controlled method to adjust with respect to the intensity of signal; agc closes the return circuit which is by the negative response system too. agc is by way of compressing volume, w ill increase gain first when agc is sta rted to s et up the upper and lower limits of the signal . then, it will compress the dynamic range of sound. it u sually use s the occasion of agc, should there be recording and producing and speaking sound, or volume is being changed under little environment. if the lasting low voice of volume, agc will enlarge volume then volume is sustained loudly while agc will reduce volume. f eatures programmable agc parameters selectable gain from C 12 db to 45 db in 1 - db steps selectable attack, release and hold times agc enable/disable function limiter enable/disable function pre - detect limiter level function two - channel agc independent under input source types, to set agc gain max/min limit dig mic +20 ~ - 16db 0xf9= 0x24 (max)+fix gain(9db) =0x2d 0xfa= 0x00(min) analog mic +30 ~ 0db 0xf9=0x0f+fix gain(9db) inv - > 0x39(max) 0xfa=0x2d inv - > 0x12(min) agc variable description fixed gain: the normal gain of the device when the agc is inactive limiter level: the value that sets the maximum allowed output amplitude attack time: the minimum time between two gain decrements release time: the minimum time between two gain increments hold time: the time it takes for the very first gain increment after the input signal amplitude decreas es
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 24 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. i n p u t s i g n a l o u t p u t s i g n a l m a x t h r e s h o l d m a x t h r e s h o l d a t t a c k t i m e h o l d t i m e r e l e a s e t i m e d e c r e a s e g a i n h o l d g a i n i n c r e a s e g a i n
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 25 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.4 hid f unction 6.4.1 hid i nterrupt in input data format: byte0 always 1 for org hid event report id byte1 for defined hid event, each event occupies one bit byte2 byte3 start address of returned data (h - start_addr) byte4 start address of returned data (l - start_addr) byte5 bit7 bit6:uart_int bit5:gpi_int bit4:spis_int(slave mode int) bit3: spim_int(master mode int) bit2:i2cs_int(slave mode int) bit1:i2cm_int(master mode int) bit0: ir_int byte6 read data of [ start_addr] byte7 read data of [start_addr+1] byte8 read data of [start_addr+2] byte9 read data of [start_addr+3] byte10 read data of [start_addr+4] byte11 read data of [start_addr+5] byte12 read data of [start_addr+6] byte13 read data of [start_addr+7] byte14 read data of [start_addr+8] byte15 read data of [start_addr+9]
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 26 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.4.2 hid get_input_report command format: bmrequesttype brequest wvalue windex wlength data 8h a1 8h 01 16h 01 01 16h 00 03 16h 00 10 byte3 start address of returned data (h - start_addr) byte4 start address of returned data (l - start_addr) byte5 bit7 bit6:uart_int bit5:gpi_int bit4:spis_int(slave mode int) bit3: spim_int(master mode int) bit2:i2cs_int(slave mode int) bit1:i2cm_int(master mode int) bit0: ir_int byte6 read data of [start_addr] byte7 read data of [start_addr+1] byte8 read data of [start_addr+2] byte9 read data of [start_addr+3] byte10 read data of [start_addr+4] byte11 read data of [start_addr+5] byte12 read data of [start_addr+6] byte13 read data of [start_addr+7] byte14 read data of [start_addr+8] byte15 read data of [start_addr+9]
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 27 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.4.3 hid set_output_report command format: bmrequesttype brequest wvalue windex wlength data 8h 21 8h 09 16h 02 01 16h 00 03 16h 00 10 output data format: byte0 always 1 for org hid event report id byte1 start address of write reg (h - start_addr) byte2 start address of write reg (l - start_addr) byte3 effective write/read data length (<=12) byte4 write data to [start_addr] byte5 write data to [start_addr+1] byte6 write data to [start_addr+2] byte7 write data to [start_addr+3] byte8 write data to [start_addr+4] byte9 write data to [start_addr+5] byte10 write data to [start_addr+6] byte11 write data to [start_addr+7] byte12 write data to [start_addr+8] byte13 write data to [start_addr+9] byte14 write data to [start_addr+10] byte15 write data to [start_addr+11]
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 28 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.5 vendor c ommand d efinition 6.5.1 vendo r c ommand r ead command format: bmrequesttype brequest wvalue windex wlength data 8h c3 8h 02 16h 16h 00 00 16h 00 C byte 0 data of reg[wvalue] byte 1 data of reg[wvalue + 1] byte 2 data of reg [wvalue + 2] byte 63 data of reg[wvalue + 63] 6.5.2 vendo r c ommand w rite command format: bmrequesttype brequest wvalue windex wlength data 8h 43 8h 01 16h 16h 00 00 16h 00 C byte 0 data of reg[wvalue] byte 1 data of reg[wvalue + 1] byte 2 data of reg[wvalue + 2] byte 63 data of reg[wvalue + 63] 6.5.3 usb v endor r equests bmrequesttype brequest wvalue windex wlength data 0x43 (vendor other) 0x01 register write address 0x0000 data length (<=64 bytes) data 0xc3 (vendor other) 0x02 register read address 0x0000 data length (<=64 bytes) data 0x43 (vendor other) 0x03 flash write address 0x0000: write only 0x0001: auto verify data length (<=64 bytes) data 0xc3 (vendor other) 0x04 flash read address 0x0000 data length (<=64 bytes) data 0x43 (vendor other) 0x05 flash control 0x0000 0x0001: chip erase 0x0000 none address 0x0002: sector erase 0xc3 (vendor other) 0x06 flash control - get status 0x0000 0x0000 0x0001 1 - byte data 0x01: erasing 0x00: ready
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 29 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.5.4 simple p rocess of f irmware u pdate 1 . g e t r e g i s t e r 0 x 3 e h o s t d e v i c e 4 . s e n d v e n d o r c o m m a n d 0 x 0 6 t o c h e c k i f t h e e r a s e p r o c e s s f i n i s h e d 5 . u s e v e n d o r c o m m a n d 0 x 0 3 w i t h a u t o - v e r i f y o p t i o n t o w r i t e f l a s h i f t h e d a t a v e r i f i c a t i o n f a i l s , t h e d e v i c e w i l l s t a l l t h e v e n d o r c o m m a n d 6 . f i r m w a r e u p d a t e c o m p l e t e 2 . m o d i f y c s _ s e l t o c s 2 , t h e n w r i t e b a c k t o r e g i s t e r 0 x 3 e 3 . w h e n c s _ s e l i s c h a n g e d t o c s 2 , f i r m w a r e w i l l e r a s e t h e w h o l e f l a s h a u t o m a t i c a l l y r e p e a t w r i t i n g f l a s h
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 30 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.6 spdif c ontrol d escription 6.6.1 spdif f rame d escription ? audio format: linear 16 bit default. ? allowed sampling frequencies (fs) of the audio: ? 44.1khz from cd ? 48 khz from dat ? 32 khz from dsr ? one - way communication: from a transmitter to a receiver. ? control information: ? v (validity) bit: indicates if audio sample is valid ? u (user) bit: user free coding i.e. running time song, track number ? c (channel status) bit: emphasis, sampling rate and copy permit ? p (parity) bit: error detection bit to check for good reception ? coding format: biphase mark except the headers (preambles), for sync purposes ? bandwidth occupation: 100khz up to 6mhz (no dc) ? signal bitrate is 2.8mhz (fs=44.1khz), 2mhz (fs=32khz) and 3.1mhz (fs=48khz) figure - 17 biphase mark signal of spdif preamble cell - order cell - order (last cell "0") (last cell "1") ------------------------------------------------------ "b" 11101000 00010111 "m" 11100010 00011101 "w" 11100100 00011011 preamble b : 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 0 c l o c k d a t a s i g n a l b i p h a s e m a r k s i g n a l
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 31 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. marks a word containing data for channel a (left) at the start of the data - block. preamble m : marks a word with data for channel a that is n o t at the start of the data - block. preamble w : marks a word containing data for channel b (right, for stereo). when using more than 2 channels, this could also be any other channel (except for a). the number of subframes that are used depends on the number of channels that is transmitted. a cd - player uses channels a and b (left/right) and so each frame contains two subframes. a block contains 192 frames and starts with a preamble "b": v: valid, u:user - data, c:channel - status - data, p:parity - bit figure - 1 spdif s ubframe d escription in each block, 384 bits of channel status and subcode info are transmitted. the channel - status bits are equal for both subframes , so actually only 192 useful bits are transmitted: figure - 2 preamble description of 192 spdif frame 6.6.2 spdif o ut c hannel s tatus bit0 bit1 bit2 bit3 bit4 bit5 bit6 bit7 byte0 consumer /professional audio/ non - audio copyright pre - emphasis mode default 0(p) 0(p) 1(p) 0(p) 0(fixed) 0(fixed) 0(fixed) 0(fixed) byte1 category code l default 0(p) 0(p) 0(p) 0(p) 0(p) 0(p) 0(p) 0(p) byte2 source number channel number default 0(fixed) 0(fixed) 0(fixed) 0(fixed) 0(fixed) 0(fixed) 0(fixed) 0(fixed) byte3 sampling frequency clock accuracy reserved default 0(p) 0(p) 0(p) 0(p) 0(fixed) 0(fixed) 0(fixed) 0(fixed) ** n ote: ( p ) these bit s can be programmed by usb hid or usb vendor command p r e a m b l e a u x d a t a l s b a u d i o d a t a m s b v u c p 0 3 4 7 8 2 7 2 8 2 9 3 0 3 1 s u b - f r a m e c h a n n e l a m c h a n n e l a w c h a n n e l a b c h a n n e l a w c h a n n e l a m c h a n n e l a w f r a m e 1 9 1 f r a m e 0 f r a m e 1 s u b f r a m e s u b f r a m e
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 32 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.7 digita l m ic rophone cm6533 /cm6533n/cm6533x1/CM6533DH seri es ic provide digital microphone interface for recording. there are two microphone signals transmitted on a single data line from dmic module. the oversampling bit stream output from dmic module connects to internal decimation filter to generate pcm output. clock data1 data2 dat a clock l/r gnd in vdd dat a clock dmic module mic vdd cm653 3 series
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 33 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.8 i2c interface 6.8.1 i2c master mode i2c protocol timing a a a a s l a v e a d d r e s s 0 m a p a d d r e s s d a t a 0 d a t a 1 a a s l a v e a d d r e s s 0 m a p a d d r e s s a s l a v e a d d r e s s 1 a d a t a 0 w r i t e t r a n s a c t i o n r e a d t r a n s a c t i o n f r o m m a s t e r t o s l a v e f r o m s l a v e t o m a s t e r s c l 0 a a a a m a p d a t a 1 s d a 1 . n b y t e w r i t e t r a n s a c t i o n s l a v e a d d r e s s 1 a d a t a 1 s d a 2 . n b y t e r e a d t r a n s a c t i o n s l a v e a d d r e s s a a f r o m m a s t e r t o s l a v e f r o m s l a v e t o m a s t e r ) ( ) ( h i g h s d a e a c k n o w l e d g n o t a l o w s d a e a c k n o w l e d g a ? ? s t o p s t o p m a p : m e m o r y a d d r e s s p o i n t e r ( t h e t a r g e t r e g i s t e r a d d r e s s i n s l a v e d e v i c e ) s c l 1 a d a t a s l a v e a d d r e s s s t a r t s t o p 0 a a m a p s d a 3 . a u t o r e a d t r a n s a c t i o n ( = w r i t e - m a p - o n l y + n b y t e r e a d t r a n s a c t i o n ) s l a v e a d d r e s s s t o p s t a r t d a t a d a t a d a t a d a t a d a t a a
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 34 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.8.2 i2c - master read with clk_sync mode 6.8.3 i2c master device address and control register address: 0x80 bits r/w bit mnemonic description default 7 - 1 r/w sa_reg the target slave device address. 0xa 8 (por) 0 r/w sa_reg 1: read, 0: write 1b 6.8.4 i2c master memory address pointer (map) register address: 0x81 bits r/w bit mnemonic description default 7 - 0 r/w map_reg the register low byte address of salve device to be read or written. 8b0 6.8.5 i2c master memory address pointer (map2) register address: 0x82 bits r/w bit mnemonic description default 7 - 0 r/w map2_reg the register high byte address of salve device to be read or written. 8b0
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 35 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.8.6 i2c master data register address: 0x83 ~ 0x92 bits r/w bit mnemonic description default 7 - 0 r/w data0~ data15 the data read from or written to the slave device. 8b0 6.8.7 i2c master control and status register 0 address: 0x93 bits r/w bit mnemonic description default 7 - 0 r/w i2c_ctrl_reg1 data length of read/write command 8h1: 1 byte, minimum length 8h2: 2 bytes 8h 8h 6.8.8 i2c master control and status register 1 address: 0x94 bits r/w bit mnemonic description default 7 r/w i2c_start trigger i2c read/write command 0 - >1: trigger i2c read/write command. 1 - >0: i2c interface had completed current task. 0 : i2c interface is idle and ready for work. 1 : i2c interface is running. 1b0 : not reset i2c interface 1 : reset i2c interface 1b0 : 8 - bit map 1 : 16 - bit map 1b0 1b : standard mode, 100khz 1 : fast mode, 400khz 1b0 2 r/w map_only map only write command 0 : write command. 1 : map only write command. 1b0 : read command. 1 : auto read command. 1b1
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 36 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 0 r i2c_ctrl_reg2 slave nack error occur 1 : no error 2 : slave nack error occur 1b0 (por) *note: write - map - only: an operation which only writes the register map the salve device 6.8.9 i2c master download control and status register address: 0x9 5 bits r/w bit mnemonic description default 7 r /w i 2c_mas_sel i2c master/slave select 1 st 8 bytes data or 2 nd 8 bytes data. if the flag index it nd 8 bytes data, then f/w can prepare the next 8 bytes data into 1 st 8byte buffer. f lag_ready (wo) : flag to index f/w has prepared next data ready. after prepare done, f/w need set this bit to index the data had been written. if f/w didnt b st 8kb block. 01: load to 2 nd 8kb block. 10: load to 3 rd 8kb block. 11: load to 4 th 8kb block. 2 i f in ld_phase, the check sum value was calculated by i2c load data. 2. if in chk_phase, the check sum value was calculated by sram read content. 1 1b0
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 37 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.8.10 i2c master clock period setting register address: 0x9 6 bits r/w bit mnemonic description default 7 w chg_enable mcu can program i2c clock ; 1
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 38 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.8.11 i2c slave mode 7 - bit slave address = 7b0001000 to 7b0001011 cm6533/cm6533n/cm6533x1/CM6533DH can serves as a slave device with bit rate up to 400kbps (fast mode). external mcu can write data to cm6533/cm6533n/cm6533x1/CM6533DH or read data from cm6533/cm6533n/cm6533x1/CM6533DH (no size limitation in i2c interface). since host side and mcu can bot h access to all the internal registers. cm6533/cm6533n/cm6533x1/CM6533DH will transfer an interrupt to internal mcu until the int bit of i2c control register have been clean by internal mcu. the interrupt will be trigger when write transaction done or det ect read - slave - address. the main usage of 2 - wire slave bus is to become the interface between the cm6533/cm6533n/cm6533x1/CM6533DH and a external micro control unit (emcu). 6.8.12 i2c slave data register address: 30~33h bits r/w bit mnemonic description default 31:0 r/w mcu_data0~f the data received from or transmitted to master device. this register cannot be written when 2 - wire slave serial bus status is busy. 0000h (por) 6.8.13 i2c slave status register address: 34~35h bits r/w bit mnemonic description default 15 reserved 1b 14:12 r reserved 0h 11 r/w thld_int_mask threshold interrupt mask: 1: mask ; 0: non - mask ; default :0 0b (por) 10 r write_data_ready interrupt happened, auto - cleared after read 0b (por) 9 r/w i2c_s_reset 0: 2 - wire serial bus in normal operation (default) 1: 2 - wire serial bus in reset state 0b (por) 8 r/w dri_tran_st initiated transaction status 1: the last initiated transaction failed, write 1 to clear. 0b (por) 7 r/w rd_tran_st read transaction status 1: a new read transaction received, write 1 to clear. 0b (por) 6 r/w wr_tran_st write transaction status 1: a new write transaction received, write 1 to clear. 0b (por) 5:1 r data_len the data length of the last write transaction received, 00000: 1 byte (map only) 00001: 2 byte (map + 1 byte data) 00010: 3 byte (map + 2 byte data) 00011: 4 byte (map + 3 byte data) 00100: 5 byte (map + 4 byte data) ?
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 39 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. others: reserved 0 r busy the 2 - wire serial bus status, 0: idle, 1: busy 0b (por) **note: when i2c issue interrupt to mcu, mcu need s to read the data numbers that threshold data count specified. and wait s another interrupt until the total data transfer completed. 6.8.14 i2c slave memory address pointer(map) register address: 36h bits r/w bit mnemonic description default 7:0 r/w mcu_map the memory addresses of the read or write transactions from mcu. address 0 is reserved for initiated transaction. 00h (por) 6.8.15 i2c slave status register address: 37h bits r/w bit mnemonic description default 7 r/w sync_en synchronization e nable 1: enable (the synchronization selection bit will decide the method adopted). 0: disable (mcu and arc should guarantee no data lost themselves). 1b (por) 6 r/w int_polarity the polarity control of pin int_out (initiated transaction interrupt), 0: high active, 1: low active 0b (por) 5:4 r/w slave_addr slave device address 00: select 0001000 (10h) as slave address 01: select 0001001 (12h) as slave address 10: select 0001010 (14h) as slave address 11: select 0001011 (16h) as slave address 01b (por) 3 r/w sync_sel synchronization m ethod s election 1: data synchronization. when this bit is one, if the current transaction has not been serviced by arc, the clock line of the 2 - wire serial bus will be pulled low. under this situation, the mcu cannot start a new transaction or continue the current read transaction until the clock line goes back to high. 0: ready pin synchronization. if the mcu cannot support open dr ain 2 - wire serial bus, this bit should be set to zero. under this situation, the mcu cannot start a new transaction or continue the current read transaction until the pin xslave_rdy goes high to signal that the driver has serviced the current transaction. driver should use driver acknowledge to signal the processing interrupt mask 0 : interrupt will happen at a read/write transaction received or a driver initiated transaction failed 1: interrupt will not happen 0b (por) 1 r/w dri_init_tran driver initiated transaction write 1 to start driver initiated transaction. this bit is cleared automatically, after arc initiated transaction starts. the arc initiated transaction should be issued only when the 2 - wire slave serial bus is idle. otherwise, it will be ignored. the arc initiated transaction will 0b (por)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 40 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. cause pin int_out to send out an interrupt for mcu. after mcu responded with a write - map - address - 0 - only transaction and a subsequent read trans action, interrupt int_out will be de - asserted. however, if the mcu does not act as what is expected (a write map - address - 0 - only transaction and a subsequent read transaction), the interrupt int_out will be still de - asserted, but the arc initiated transacti on status is used to signal a fail status to arc. in this case, the driver should consider to repeat the failed driver initiated transaction again. 0 r/w ack driver acknowledge means driver has processed the current transaction. write 1 to acknow ledge. this bit will be cleared automatically. 0b (por) 6.8.16 i2c using example master mode write : i2c write 2 bytes ( s lave ad dress =92, map ad dress =01, data=55, aa) write 0x80= 92 (slave address) write 0x81 = 01 (m ap address) write 0x83~0x84 = 55 aa ( d ata register) write 0x93 = 02 ( d ata length 2 bytes) write 0x94 = 92 (i2 c start) master mode read: i2c read 2 bytes ( s lave ad dress =92, map ad dress =01) write 0x80= 9 3 (slave address) write 0x81 = 01 (m ap address) write 0x93 = 02 ( d ata length 2 bytes) write 0x94 = 92 (i2 c start) read 0x83~0x84 ( d ata register)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 41 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.9 spi interface the spi interface is used to transfer control data between the cm6533/cm6533n/cm6533x1/CM6533DH and external codec. in a spi interface there is only one central clock source producin g a reference clock to which spi data processing is synchronized. this clock is often referred to as the mcu clock, e.g. for spi cl ock 12mhz, w hen the mcu c loc k equal 48mhz an d spi clock div4. 6.9.1 spi control register 0 address: 3ch bits r/w bit mnemonic description default 7 r/w slv_mst spi master/slave mode 0: master mode 1: slave mode 1b1 1b1 1b0 1b0 1b0 th bit 1: rs/a0==1 for 8 th bit 1b0 0: mcu cant read spi data 1b0 0: mcu cant write spi data 1b0 6.9.2 spi control register 1 address: 3dh bits r/w bit mnemonic description default 7 r/w spi_start trigger spi read/write command 0 - >1: trigger spi read/write command. 1 - >0: spi interface had completed current task. 0 : spi interface is idle and ready for work. 1 : spi interface is running. 1b0 1b1 1b0
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 42 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 4 - 3 r/w frq_sel spi clock period 2b00: by mcu clk div 4 2b01: by mcu clk div 12 2b10: by mcu 2b11: by mcu clk div 20 2b0 1b0 1b0 1b0 6.9.3 spi interrupt address: 3eh bits r/w bit mnemonic description default 7 r/w cpol clock polarity 1b1 1b1 2b10 1b0 1b0 1b1 1b1 6.9.4 spi control register 3 address: 3fh bits r/w bit mnemonic description default 7 - 0 r/w data_len the data length of read/write, 0000_0000: reserved 0000_0001: 1 bytes 0000_0010: 2 bytes 0000_0011: 3 bytes . . . 1111_1111:255 bytes 8d0
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 43 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.9.5 spi using example spi write 3 bytes ( ad=92,data=55,aa) write 0x38~0x3a= 92 55 aa (data register) write 0x3f = 03 (write length 3 bytes) write 0x3d = a 0 (spi start) spi read 3 bytes (ad=92) write 0x38= 92 (data register) write 0x3f = 03 (read length 3 bytes) write 0x3d = 8 0 (spi start) read 0x38~0x3a
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 44 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.10 gpio 6.10.1 gpo d ata r egister address offset: c0 - c1h bits r/w bit mnemonic description default 15:0 r/w gpo_0_reg gpo_1_reg gpo data register which represents 16h0 6.10.2 gpi d ata r egister address offset: c2 - c3h bits r/w bit mnemonic description default 15:0 r gpi data register which represents 16h0 6.10.3 gpio d irection c ontrol r egister address offset: c4 - c5h bits r/w bit mnemonic description default 15:0 r/w gpoe_0 gpoe_1 gpio output enable register which represents for pin xgpio[15:0] 1: the corresponding pins are used as output 0: the corresponding pins are used as input 16h0 6.10.4 gpio i nterrupt e nable m ask r egister address offset: c6 - c7h bits r/w bit mnemonic description default 15:0 r/w gpi_en gpio_e, gpio interrupt enable mask which represents for pins, xgpio[15:0] 1: enable, 0: disable 16h0 6.10.5 gpio d ebouncing r egister address offset: c8 - c9h default value: 0000h (msb - > lsb) bits r/w bit mnemonic description default 15:0 r/w gpi_deb enable the clock scale of mini - second (32 ms) for de - bouncing, default 1 1: enable, 0: disable 16h0
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 45 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.10.6 gpi r emote c hoose address offset: 0xe2~e3h bits r/w bit mnemonic description default 15:0 r/w gpi_rwl gpi_rwh d0==1b1:gpi[0] remote wake up d1==1b1:gpi[1] remote wake up d2==1b1:gpi[2] remote wake up d3==1b1:gpi[3] remote d4==1b1:gpi[4] remote wake up d5==1b1:gpi[5] remote wake up d6==1b1:gpi[6] remote wake up d7==1b1:gpi[7] remote wake up d8==1b1:gpi[8] remote wake up d9==1b1:gpi[9] remote wake up d10==1b1:gpi d11==1b1:gpi[11] remote wake d12==1b1:gpi[12] remote wake d13==1b1:gpi[13] remote wake d14==1b1:gpi[14] remote wake d15==1b1:gpi[15] remote wake 16h0 6.10.7 gpio p ull - up/ d own address offset: 0xe4 bits r/w bit mnemonic description default 7 r/w gpio_pd0[7] gpio_7 pad control 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 46 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. address offset: 0xe5 bits r/w bit mnemonic description default 7 r/w gpio_pd1[7] gpio_15 pad control 1b1 : floating ; 1b0 : 75k pull up 1b1 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) bits r/w bit mnemonic description default 7 r/w gpio_pd2[7] gpio23 pad control 1b1 : floating ; 1b0 : 75k pull up 1b1 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por) 1b1 : floating ; 1b0 : 75k pull up 1b1(por)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 47 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.11 arbitrary s ine - tone g enerator there are four (4) memory banks to store user defined waveform in cm6533 /cm6533n /cm6533x1/CM6533DH design. this function would generate waveform data that is desired to be hear d from earphones. for example when function keys were pressed or do oth er operations. user can predefine two different waveforms with 96k and 88.2k sampling rates and stores it in corresponding memory banks. the waveform data format must comply with the following specifications : 1. 16 bits pcm with 2s complement 2. first word mus t define waveform length (length[9:0]= {byte1[2:0], byte0[7:0]}) 3. waveform length must less than 2046 4. four memory banks bank1: 0x6000~0x67ff (length: 0x6000~0x6001, waveform data 0x6002~0x67ff) bank2: 0x6800~0x6fff (length: 0x6800~0x6801, waveform data 0x68 02~0x6fff) bank3: 0x7000~0x77ff (length: 0x7000~0x7001, waveform data 0x7002~0x77ff) bank4: 0x7800~0x7fff (length: 0x7800~0x7801, waveform data 0x7802~0x7fff) g enerating sine - tone is based on a look - up table and the step size of look - up table for differen t sampling rates would be adjusted automatically.
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 48 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.12 tri - c olor ed led c ontrol s etting pwm function is generated by led counter and output the pwm signal to gpio pin. the 8 - bit counter counts modulus 256 controlled by led freq, led duty register. the led unit register control s pwm resolution. when the led freq register value is equal to the led duty register (high), the pwm output also goes high. when the led freq, led duty register reaches zero, the pwm output is forced to go low. the low - to - high ratio ( duty) of the pwm output is led duty/led freq. led duty led freq led unit (256 step) pwm duty range 00h ffh 00:10.5ms 01:5.45ms 10:2.73ms 11:1.36ms 00h/ffh ~feh/ffh 01h ffh 80h ffh feh ffh the output d uty of pwm has different timing s . duty range is from 0/256~255/256. l e d d u t y / l e d f r e q = 0 0 h / f f h l e d d u t y / l e d f r e q = 0 1 h / f f h l e d d u t y / l e d f r e q = 8 0 h / f f h l e d d u t y / l e d f r e q = f e h / f f h
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 49 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 6.13 r eset 6.13.1 w atchdog r eset t imer the watchdog timer is a 15 - bit counter that is incremented every 24 or 384 clock cycles. it is used to provide the system supervision in case of software or hardware upset. if the software wa s not able to refresh the watchdog timer after 786336 or 12581376 clock cycles (65ms or 1s when using 12mhz clock), an internal reset is generated. p o w e r v s s v d d w a t c h d o g o v e r f l o w t i m e w d t r e s e t n o r m a l r u n f l a s h i n i t i a l t i m e ( r e a d 1 6 k f i r m w a r e f r o m i n t e r n a l f l a s h ) r e s e t r e a d y f l a s h i n i t i a l t i m e ( r e a d 3 2 k f i r m w a r e f r o m i n t e r n a l f l a s h ) r e s e t r e a d y 5 5 m s e c 9 5 m s e c d e f a u l t 1 s e c
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 50 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 7 cm6533x1 xear ? sound processing xear ? is the core name of c - media sound effect technology; it includes audio and voice processing. these sections describe the main sound processing on cm6533x1 . 7.1 xear? surround headphone xear? surround headphone creates a realistic 5.1/7.1ch surround sound field over stereo headphones. combined with 3d sound processing in games, gamers could enjoy amazing 3d gaming sound experience and comb at advantages. it also delivers natural sound space for stereo music as real as playback on speakers for longer listening on headphones without fatigue. xear surround headphone provides music/gaming and movie modes for different applications. user can swi tch the surround mode to get the best effect in different situation. 7.2 xear? software 10 band equalizer it provides 10 - band eq function , user will able to adjust the eq band by manual and create customize preset items or click on the preset eq mode . there ar e 12 preset modes such as bass, treble, live, rock, jazz, etc. 7.3 xear? audio brilliant xear? audio brilliant restores the clarity and details of compressed audio in music, movies and games (mp3, wma, aac, ac3, etc.). make the sound more dynamic and brilliant . audio compression algorithms will usually sacrifice some audio frequency signals. it might result in flat, thin, and lifeless sounds. audio brilliant recreates the subtleties of the original performance. 7.4 xear? dynamic bass xear? dynamic bass reproduces t he deep and vibrating bass in music, games, and movies, and music even over small speaker/headphone drivers and enclosures . applying psychoacoustic techniques to make users feel stronger bass signals of drums, bass guitars, explosions, automobile engines, etc. it can o vercome small speaker drivers poor bass limitation without damage . 7.5 xear? voice clarity xear? voice clarity can increase the clarity, intelligibility, and prominence of receiving voice in games, voip, music, or movies without suppressing or changing other background audio. adjustable voice clarity levels make you hear the voice more clearl y or learn language more easily . optional background stationary noise suppression in communication simultaneously . 7.6 xear? smart volume xear? smart volume nor malizes sound levels of music, internet av clips, and movies to reduce the probabilities that require volume adjustments on docking speakers and pcs. 7.7 xear? surround max xear surround max can expand stereo audio content to each output channel. when you playing mp3 music file and enable this function, you can hear music from each speaker (8 speakers). 7.8 xear? magic voice xear? magic voice is a great feature for disguising your voice (using cartoon/monster/male/female effects) for voip and online gaming appl ications.
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 51 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 7.9 xear? environmental noise cancellation xear? voclear environmental noise cancellation (enc) utilizes dual microphone signal capturing via gaming headset, which could effectively identify the dynamic ambient noises, and cancel them out significant ly even in noisy gaming environments (internet caf, game champion spot, living room, etc.) to ensure the far - end teammate could hear your voice clearly over the internet or lan, and create team gaming advantages. 8 CM6533DH dolby ? and xear ? sound processin g dolby is the trademark from dolby laboratories, inc., is an american company specializing in audio noise reduction and audio encoding/compression . dolby licenses its technologies to consumer electronics manufacturers. 8.1 dolby? headphone v2 dolby surround effect creates the sensation of multiple loudspeakers in a room, and is closer to home theater sound than traditional headphone au dio. 8.2 dolby? pro logic iix dolby pro logic iix expands stereo or 5.1 - channel audio to 7.1 - channel sound . 8.3 xear? environment effect it provides 28 special environment emulations, user can hear different sound reflection and reverberation. 8.4 xear? software 10 ba nd equalizer it provides 10 - band eq function , user will able to adjust the eq band by manual and create customize preset items or click on the preset eq mode . there are 12 preset modes such as bass, treble, live, rock, jazz, etc. 8.5 xear? magic voice xear? magic voice is a great feature for disguising your voice (using cartoon/monster/male/female effects) for voip and online gaming applications.
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 52 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 9 electrical c haracteristics 9.1 absolute m aximum r atings test conditions : d v 50 = 5 v, av50 = 5v, dgnd =0v, ta=+25 o c parameter symbol min. typ max. unit storge temperature t s - 25 - 150 o c operating ambient temperature t a - 15 25 7 0 o c digital supply voltage(dv50) 4.5 5.0 5.5 v analog supply voltage(av50) 4.5 5.0 5.5 v i/o pin voltage - gnd - 3.3 v esd (body mode) 4000 v esd (machine mode) 200 v 9.2 recommended o peration c onditions parameter symbol min. typ max. unit digital supply voltage(dv50) - 5 v analog supply voltage(av50) 5 v operating ambient temperature 25 o c mcu c lock - 12.000 mhz 9.3 power c onsumption test conditions: dv50=5v, av50 = 5 v, dgnd =0v, ta=+25 o c , mcu clock = 12mhz. sample rate=48khz, 16bits, operation: hp - out playback+mic - in recording, eq disable, spdif out disable , no loading parameter min. typ max. unit total power consumption (including playback and record ing) - 65.9 = digital 27.9ma + analog 38ma - ma standby power consumption (excluding playback and recording) - 64 - ma suspend mode power consumption - 2. 4 - ma 9.4 dc c haracteristics test conditions: dv50=5v, v dd = 3.3 v, dgnd =0v, ta=+25 o c , v dd = 3.3v **n ote: dvdd18,avdd36,av42_da,av36_dal,av36_dar without current drive capacity parameter symbol min. typ max. unit operation voltage range dvdd 4.5 5 5.5 v dc input voltage range (gpio,i2c,spi,spdif) dcvin - 0.3 5.5 v input high - level voltage (gpio,i2c,spi,spdif) vih 2 2 v input low - level voltage (gpio,i2c,spi,spdif) vil 0.8 0.8 v output high - level voltage (gpio,i2c,spi,spdif) voh 2.4 - 3.6 v output low - level voltage (gpio,i2c,spi,spdif) vol 0 - 0.4 v output source current (gpio, i2c,spi,spdif) ioh 8 ma output sink current (gpio, i2c,spi,spdif) iol 8 ma vreg33 driver current ivreg 10 ma
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 53 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 9.5 analog a udio parameter symbol pin name limit values unit test conditions min. typ. max signal reference voltage xvag xvag 1.65 1.75 1.85 v rload>> 10 m ? microphone input clipping level (at minimum input volume, i.e., 0 db) vmi xmicl xmicr 2.828 vpp volume = db analog output voltage ac vao xlnoutl xlnoutr 2.828 vpp microphone input impedance mii xmicl xmicr 20 45 k ? microphone a - a input impedance maii xmicl xmicr 20 k ? headphone output impedance hp o i xlnoutl xlnoutr 32 ? volume = db 9.6 usb t ransceiver parameter symbol pin name limit values unit test conditions min. typ. max regulator voltage xv33 xv33 3.0 3.3 3.6 v cl =10uf driver output impedance including the 22 ? external serial resistor ro d+/d ? 24 40 ? static, low or high rise and fall times tr/tf 3 10 19 ns cl = 50 pf, driver mode rise/fall time matching ma_trt f 90 110 % cl = 50 pf, driver mode crossover voltage vxover 1.30 1.75 2.0 v cl = 50 pf, driver mode differential receiver common - mode range vcm_dr ec 0.8 2.5 v single - ended receiver threshold voltage vt_srec 0.8 2.0 v switchable pull - up resistor rpu vreg, d+ 1.5 k ? 9.7 microphone b ias parameter symbol pin name limit values unit test conditions min. typ. max open circuit voltage microphone bias vmicbia s micbias 2.55 2.75 2.95 v output current microphone bias imicbias micbias 1.25 ma rmin=2.2k ? output impedance microphone bias routmi cb micbias 600 650 700 ? power supply rejection ratio for microphone bias psrrmic b avdd, micbias 100 db internal regulators active, at maximum load current (0.5 ma), 1 khz sine wave at 100 mvrms
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 54 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 10 audio p erformance 10.1 dac a udio q uality ta=25 , dv50=5v, av50=5v , equalizer disable d , typical fs /bit - depth=48khz/ 16bit (except remarked in test conditions), master volume= 0db, platform = dell desktop 32bws02, 4g ram, windows 8.1 cht items test conditions test values unit min. typ. max. full s cale output voltage 10k ? loadin 1.04 vrms 32 ? loading 0.99 vrms thd+n @ - 3db full scale 10k ? loading ? loading ? loading ? loading ? loading ? loading ? loading ? loading ? loading ? loading ? loading ? loading ? loading
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 55 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 10.2 adc a udio q uality ta=25 , dv50=5v, av50=5v, input test signal is 997hz sine wave, measure bandwidth is 12 0hz to 20khz , equalizer disable , agc off , mic gain= 0db, typical fs/bit - depth=48khz/16bit (except remarked in test conditions) platform = dell deskt op 32bws02, 4g ram, windows 8.1 cht items test conditions test values unit min. typ. max. full s cale input voltage 0.74 vrms thd+n @ - 3db full scale input 20~20khz - 85 - 83 (@1khz) db dynamic range ( with - 60dbfs input signal ) a - weighted 88 db sampling frequency accuracy f s=48khz/16bits - 0.0032 - 0.00 69 % f s= 96 khz/ 24 bits - 0.0057 - 0.0078 channel separation (crosstalk) 20~20khz - 80 db frequency response f s=48khz/16bits , 20~20khz - 0.0 43 (20hz) - 0.5 12 (20khz) db f s= 96 khz/ 24 bits , 20~48khz - 0.005 (20hz) - 3 (43khz) db passband ripple range 20~20khz 0.26 5 db
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 56 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 10.3 analog monitoring / sidetone ( a - a ) p ath a udio q uality ta=25 , dv50=5v, av50=5v , microphone - in to line - o ut , 10kohms loading, master volume=0db, mic gain=0db platform = dell desktop 32bws02, 4g ram, windows 8.1 cht items test conditions test values unit min. typ. max. full s cale output voltage 1.05 vrms thd+n @ - 3db full scale input 20~20khz - 90 - 89 (@1khz) db dynamic range ( with - 60dbfs input signal ) a - weighted 92 db channel separation (crosstalk) 20~20khz - 90 db frequency response 20~20khz - 0.036 (20hz) - 0.133 (20khz) db passband ripple range 20~20khz 0.002 db
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 57 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 11 package dimension model number package operating ambient temperature supply range cm6533 48 - pin lqfp 7mm7mm1.4mm (plastic) - 15 c to +70 c dvdd = 5v, avdd = 5v cm6533 n 48 - pin qfn 7mm7mm 0 . 85 mm (plastic) - 15 c to +70 c dvdd = 5v, avdd = 5v cm6533 x1 48 - pin lqfp 7mm7mm1.4mm (plastic) - 15 c to +70 c dvdd = 5v, avdd = 5v cm6533 dh 48 - pin lqfp 7mm7mm1.4mm (plastic) - 15 c to +70 c dvdd = 5v, avdd = 5v outline dimensions *dimensions shown in inches and (mm)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 58 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 11.1 package dimension of cm6533/ 6533 x1/ 6533 dh 48 - lead thin plastic quad flatpack (lqfp)
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 59 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. 11.2 package dimension o f cm6533 n 48 - le ad thin plastic quad flatpack ( qfn )
cm 6533 ,cm6533n, cm6533x1,CM6533DH usb audio chip page 60 / 60 www.cmedia.com.tw rev .1.6 copy right? c - media electronics inc. end of datasheet c - media electronics inc. 6f., 100, sec. 4, civil boulevard, taipei, taiwan 106 r.o.c. tel +886 - 2 - 8773 - 1100 fax +886 - 2 - 8773 - 2211 e - mail sales@cmedia.com.tw disclaimer: information furnished by c - media electronics inc. is believed to be accurate and reliable. however, no responsibility is assumed by c - media electronics inc. for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications are subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of c - media. trademark and registered trademark are the property of their respective owners.

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