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[ak 1594 ] 018003497 - e - 00 - 1 - 2018/3 general the ak1594 is a low power consumption transmitter ic that supports bluetooth ? 4.2 . t h e ak1594 is a simplest bluetooth ? low energy transmitter without the need for a microcontroller , providing advertising data in the on - chip eeprom. features ? single chip bluetooth ? low energy transmitter ? only the ak1594 and a few passive components are required to complete bluetooth ? low energy advertising transmission function. ? microcontroller - less(mcu - less) ? bluetooth ? low energy advertising transmissions can be broadcasted using the ak1594 s on - chip eeprom data. t h is mcu - less architecture eases system design without a complicated d evelopment environment . ? functional switches ? 4 - hardware switches works as on - off, interval and power controller for advertising transmission. ? programmable output power ? support wide range output power from - 32dbm to +6dbm. ? data whitening and crc ? build C in data whitening feature and crc that are compliant with bluetooth ? low energy. ? support gfsk(1mbps) ? security ? aes - 128 hardware encryption ? p ackage ? 28 - pin qfn (4.0mm x 4.0mm x 0.70mm, 0.4mm pitch) ak1594 bluetooth ? low energy transmitter
[ak 1594 ] 018003497 - e - 00 - 2 - 2018/3 1. table of contents general ................................ ................................ ................................ ................................ .... 1 features ................................ ................................ ................................ ................................ .. 1 1. table of contents ................................ ................................ ................................ ............. 2 2. notation ................................ ................................ ................................ ............................ 4 3. block diagram ................................ ................................ ................................ .................. 5 4. pin / fun ction ................................ ................................ ................................ .................... 6 5. absolute maximum ratings ................................ ................................ .............................. 8 6. recommended operating range ................................ ................................ .................... 8 7. electric characteristics ................................ ................................ ................................ ..... 9 7.1. characteristics of rf output ................................ ................................ ................................ ........ 9 7.2. current consumption ................................ ................................ ................................ ................. 10 7.3. characteristics of battery monitor ................................ ................................ ............................. 11 7.4. characteristics of eeprom ................................ ................................ ................................ ...... 11 7.5. characteristics of crystal oscillator 32mhz ................................ ................................ .............. 12 7.6. characteristics of crystal oscillator 32.768khz ................................ ................................ ........ 12 7.7. characteristics of power on timing ................................ ................................ .......................... 12 7.8. characteristics of timer ................................ ................................ ................................ ............. 13 8. electric characteristics of digital interface ................................ ................................ .... 14 8.1. digital dc characteristics ................................ ................................ ................................ .......... 14 8.2. digital ac characteristics ................................ ................................ ................................ .......... 14 8.2.1. serial interface timing ................................ ................................ ................................ ........... 14 8.2.2. timing chart of eeprom access ................................ ................................ ....................... 15 8.2.3. sw1 pin , sw2 pin, sw3 pin, sw4 pin timing ................................ ................................ ....... 16 9. operation state ................................ ................................ ................................ .............. 17 9.1. state description ................................ ................................ ................................ ........................ 17 10. function description ................................ ................................ ................................ ....... 18 10.1. tx mode ................................ ................................ ................................ ............................... 18 10.2. power mode ................................ ................................ ................................ ...................... 19 10.3. auto o peration mode ................................ ................................ ................................ ............. 19 10.4. switch action ................................ ................................ ................................ .......................... 20 10.4.1. sw1 pin ................................ ................................ ................................ .............................. 20 10.4.2. sw2 pin ................................ ................................ ................................ .............................. 20 10.4.3. sw1 and sw2 simultaneous control(reset) ................................ ................................ .... 20 10.4.4. sw3 pin ................................ ................................ ................................ .............................. 20 10.4.5. sw4 pin ................................ ................................ ................................ .............................. 22 10.5. reset ................................ ................................ ................................ ................................ ...... 22 10.6. switch detector ................................ ................................ ................................ ...................... 23 10.7. battery monitor ................................ ................................ ................................ ....................... 24 10.8. led ................................ ................................ ................................ ................................ ......... 24 11. power - up sequence ................................ ................................ ................................ ....... 25 12. power up flow ................................ ................................ ................................ ................. 27 13. eeprom function ................................ ................................ ................................ ......... 29 13.1. eeprom access ................................ ................................ ................................ ................... 29 13.2. eeprom map ................................ ................................ ................................ ........................ 29 13.2.1. akm1, akm2 (0x00, 0x01) ................................ ................................ ................................ . 31 13.2.2. mode1 (0x02) ................................ ................................ ................................ .................... 31 13.2.2.1. bat_en ................................ ................................ ................................ .............................. 31 13.2.2.2. bat_led_en ................................ ................................ ................................ ..................... 31 13.2.2.3 . bat_sel1 ................................ ................................ ................................ .......................... 31 13.2.2.4. bat_sel2 ................................ ................................ ................................ .......................... 31 13.2.2.5. i_led ................................ ................................ ................................ ................................ .. 31 13.2.2.6. beacon operating mode setting ................................ ................................ .......................... 32 13.2.2.7. advertising channel 1st setting ................................ ................................ ........................... 32 13.2.2.8. advertising channel 2nd setting ................................ ................................ ......................... 32
[ak 1594 ] 018003497 - e - 00 - 3 - 2018/3 13.2.2.9. advertising channel 3rd setting ................................ ................................ .......................... 32 13.2.2.10. txdata_loop ................................ ................................ ................................ .............. 35 13.2.2.11. txdata_cw ................................ ................................ ................................ .................. 35 13.2.3. mode2 (0x03) ................................ ................................ ................................ .................... 35 13.2.3.1. powr_mode [1:0] ................................ ................................ ................................ ............ 35 13.2.3.2. powrd[4:0] (tx power setting) ................................ ................................ ........................ 36 13.2.4. swact (0x04) ................................ ................................ ................................ ................... 38 13.2.4.1. sw1led_en ................................ ................................ ................................ ...................... 38 13.2.4.2. eventnum[2:0] ................................ ................................ ................................ ................ 38 13.2 .4.3. sw2_dis ................................ ................................ ................................ ............................ 38 13.2.4.4. sw2led_en ................................ ................................ ................................ ...................... 38 13.2.4.5. sw3_func ................................ ................................ ................................ ........................ 39 13.2.4.6. sw3led_en ................................ ................................ ................................ ...................... 39 13.2.4.7 . sw3step [2:0] ................................ ................................ ................................ .................. 39 13.2.4.8. sw4led_en ................................ ................................ ................................ ...................... 40 13.2.4.9. sw4step[2:0] ................................ ................................ ................................ ................... 40 13.2.5. advint (0x05) ................................ ................................ ................................ ................... 41 13.2.5 .1. advertising interval setting ................................ ................................ ................................ . 41 13.2.6. preamble (0x09h[15:8]) ................................ ................................ ................................ ...... 42 13.2.6.3. pdu length setting ................................ ................................ ................................ ............ 42 13.2.7. tx data (0x09 - 0x20) ................................ ................................ ................................ ......... 43 14. lsi interface circuit ................................ ................................ ................................ ........ 45 15. recommended external circuits ................................ ................................ .................... 47 15.1. recommended external circuits ................................ ................................ ........................... 47 15.2. external component ................................ ................................ ................................ ............... 48 16. package ................................ ................................ ................................ .......................... 49 16.1. outline dimensions ................................ ................................ ................................ ................ 49 16.2. marking ................................ ................................ ................................ ................................ ... 50 17. ordering g uide ................................ ................................ ................................ ............... 51 18. revision history ................................ ................................ ................................ .............. 51
[ak 1594 ] 018003497 - e - 00 - 4 - 2018/3 2. notation t he following notations are used for specific signal s and register names: ? [name]: internal signal name ? : eeprom address name ? { name}: eeprom bit name the numerical values are expressed as follows ? 0x 63a : hexadecimal numbers ? 0d 1594 or 123 : decimal numbers ? 0b 11 00011 1010 : binary numbers terms and acronyms ? adva advertiser s device address ? aes advanced encryption standard ? ble bluetooth ? low energy ? crc cyclic redundancy check ? eeprom electrically erasable programmable read - only memory ? gfsk gaussian freq uency shift keying ? irk identity resolving key ? ldo low drop out ? lsb least significant bit ? mcu micro controller unit ? msb most significant bit ? pdu protocol data unit ? pll phase locked loop ? por power on reset ? ppm p art p er million ? rf radio frequency ? spi serial peripheral interface ? sw switch ? tx transmit these 3 words mean data packet of bluetoo th ? low energy advertising channel . the data format is shown in figure 1. ? payload ? adva ? advdata figure 1 bluetooth ? low energy advertising channel packet format adva 1octet 4octets 2octets 6octets 3octets 0 to 31octets crc preamble access address pdu header payload advdata
[ak 1594 ] 018003497 - e - 00 - 5 - 2018/3 3. block diagram power supply and ground pins are not included. fig ure 2 o verall block diagram - rf transmit ter this block outputs rf signal after gfsk modulation. - switch scanner this block detects switch actions. - eeprom eeprom holds ak1594 setting and tx data . - re g ister eepr o m r ead data i s stored temporary to the register. it s not accessible to users. - battery monitor this block monitoring vdd voltage - led driver this block lights led. crc generator whitening generator aes - 128 battery monitor switch scanner clock generator 32mhz clock generator 3 2 .768khz dcdc ldo rf transmitter i/f eeprom led driver por reset controller sclk cs sdat sw1 sw2 sw3 sw4 switch vdd18 led osc1 osc2 losc1 losc2 lpfo auto ldoc rfout paldoc data data2 testo pll synthesizer bluetooth? low energy controller register
[ak 1594 ] 018003497 - e - 00 - 6 - 2018/3 4. pin / function pin no. pin name i/o pin functions state after por max. load capac itance pullup/ pulldown remarks tx section 22 rfout ao rf signal output 23 paldoc ao connection for an external tx output adjustment inductor to rfout pin. external interface 6 sw1 di switch 1 input (start trigger signal input for burst transmission ) note1 9 sw2 di switch 2 input (stop trigger signal input for burst transmission ) note1 16 sw3 di switch 3 input (t ransmission power control signal input) note1 17 sw4 (rxd) di switch 4 input (a dvertising interval control signal input) rxd : bluetooth ? certification test input pin note1 5 led a o led output (leave this pin open if a led is not used) 19 data di this pin is not use. tie to ground 20 data2 di this pin is not use. tie to ground 18 test o(txd) d o for akm test (leave this pin open) txd : bluetooth ? certification test output pin l 15pf common section 24 ldoc ao connection for an external capacitor for ldo. 7 osc1 ai 32mhz crystal oscillator 8 osc2 ao 32mhz crystal oscillator 15 losc1 ai 32.768khz crystal oscillator 1 4 losc2 ao 32.768khz crystal oscillator 12 cs di eeprom access mode when cs pin = h normal mode when cs pin = l p ull down 11 sclk di eeprom access clock input when cs pin = h normal mode when cs pin = l p ull down 13 sdat dio eeprom access data in/output when cs pin = h normal mode when cs pin = l 15pf p ull up input mode after por 4 lpfo a i o connection for an external capacitor for the loop filter 28 switch ao dcdc converter output 26 vdd18 ai power supply connect to switch pin via an external inductor. ai: analog input pin ao: analog output pin aio: analog i/o pin di: digital input pin do: digital output pin d i o: digital i/o pin p: power supply pin g: ground pin
[ak 1594 ] 018003497 - e - 00 - 7 - 2018/3 pin no. pin name i/o pin functions state after por max. load capac itance pullup/ pulldown remarks 25 auto di selection of auto mode. auto pin = l , switch action transmission mode auto pin = h , automatic transmission mode do not leave this pin open. power supply 2 avdd p power supply 1 dcvdd p power supply for dcdc converter 21 rfvss g ground for rfamp 3 ,10 vss g ground 27 dcvss g ground for dcdc converter note 1 must be connect ed to vdd or pull up if the pin is unuse d . rfvss data2 data testo sw4 sw3 losc1 21 20 19 18 17 16 15 rfout 22 14 losc2 paldo c 23 13 sdat ldoc 24 12 cs auto 25 11 sclk vdd18 26 10 vss dcvss 27 9 sw2 switch 28 8 osc2 1 2 3 4 5 6 7 dc vdd avdd vss lpfo led sw1 osc1 figure 3 pin configurations ( top view )
[ak 1594 ] 018003497 - e - 00 - 8 - 2018/3 5. absolute maximum ratings parameter symbol m in. m ax. unit remarks supply voltage vdd - 0.3 6.0 v note 1 ground level vss 0 0 v input voltage v in vss - 0.3 vdd +0.3 v note 1 input current iin - 50 +50 ma output current iout - 50 +50 ma storage temperature tstg - 55 +1 25 oc note 1 all voltages with respect to the ground level as 0v warning: operation at or beyond these limits may result in permanent damage to the device. normal operation is not guaranteed at these extremes. 6. recommended operating range the specifications are applicable within operating range (supply voltage/operating temperature) specified below. parameter symbol voltage ground pin remarks ground pin vss 0v vss , dcvss, rfvss parameter symbol m in. typ . m ax. unit remarks operating temperature ta - 40 85 o c supply voltage vdd 2 .0 3.0 3. 7 v avdd, dc vdd pin note 1 ,2 note 1 when vdd voltage falls below 2v and the ak1594 is needed to be power - up, please reset the ak1594. performance is not guaranteed for power - on without the ak1594 reset. note 2 this specification in case of { powr_mode[1] } = 0b 0, minimum value is 2.3v in case of { powr_mode[1] } = 0b 1 note 3 all voltages with respect to the ground level as 0v note 4 akm assumes no responsibility for the usage beyond the conditions in this data sheet.
[ak 1594 ] 018003497 - e - 00 - 9 - 2018/3 7. electric characteristic s the specifications are applicable within recommended operating range (supply voltage/operating temperature), using the test schematic. 7.1. characteristics of rf output param e ter min. typ. max. unit remarks c h annel frequency note 1 frequency1 2402 mhz frequency2 2426 mhz frequency3 2480 mhz output power power setting 1 for high power mode +6 dbm { pow r d[4:0] } = 0 0 for 0000 1111 sequence (f) (() f mbps bt(bandwidth - time) 0.5 modulation index (m) 0.45 0.50 0.55 m=(2*|f|) / (bit rate)
[ak 1594 ] 018003497 - e - 00 - 10 - 2018/3 7.2. current consumption parameter symbol condition min. typ. max. unit full power down sidd1 sw pins:vdd, led:open, note 1 15 100 n a tx on idd1 a led pin : open, note 2 5 8 ma idd1b led pin : open, note 3 5 13 ma idd1 _2a led pin : open, note 4 11 18 ma idd1 _2b led pin : open, note 5 11 30 ma s leep idd2 a led pin : open, note 6 0.9 1.2 ua idd2 b led pin : open, note 7 0.9 1.5 ua led current ( drivability ) iled1 led pin voltage : 1.6v (typ) note1 note8 3.0 5.0 ma iled 2 led pin voltage : 1.6v (typ) note 1 note9 1.0 2.0 ma note 1 vdd=3.0v, room temperature (25 oc .). note 2 vdd=3.0v, room temperature (25 oc .), tx_ch:2426mhz, rfout: 0dbm (typ.) , {powrd[4:0]}=0d28, {powr_mode[1:0]}= 0b0 note 3 vdd=vsleepn to 3.7v, temperature range = - 40 to 85 oc , tx_ch:2426mhz, rfout: 0dbm (typ.) , {powrd[4:0]}= 0d28 , {powr_mode[1:0]}= 0b0 note 4 vdd=3.0v, room temperature (25 oc.), tx_ch:2426mhz, rfout: +6 dbm (typ.), {powrd[4:0]}= 0d31 , {powr_mode[1]}= 0b1 note 5 vdd=vsleeph to 3.7v, temperature range = - 40 to 85 oc , tx_ch:2426mhz, rfout:+6dbm(typ.), {powrd[4:0]}= 0d31 , {powr_mode[1]}= 0b1 note 6 vdd=3.0v, room temperature (25 oc.), rfout: off, losc: active. note 7 vdd=vsleepn to 3.7v, temperature range = - 40 to 85deg, rfout: off, losc: active. note 8 {i_led} = 0b1 note 9 {i_led} = 0b0
[ak 1594 ] 018003497 - e - 00 - 11 - 2018/3 7.3. characteristics of battery monitor parameter symbol m in. typ . m ax. unit remarks detect voltage1 valert 2.3 v for led release voltage1 vrelease 2.46 v for led release voltage detect voltage2 n vsleep n 2.05 v for full power down normal power mode detect voltage2h note 1 vsleeph 2.3 v for full power dow n high power mode note 1 when high power mode { powr_ mode[1:0]} is 0b 11 or 0b 10 , the ak1594 goes into full power down. led pin function does not work. refer 10.7 battery monitor . note 2 vsleepn release voltage is vsleepn note 3 vsleeph release voltage is vrelea se figure 4 battery monitor function 7.4. characteristics of eeprom parameter conditions m in. t yp. m ax. unit number of rewrite times note1 10 0,000 times endurance note1 ta = 85 c 10 years note 1 guaranteed by design ( not tested ) v sleep n or vsleeph v alert detect
[ak 1594 ] 018003497 - e - 00 - 12 - 2018/3 7.5. characteristics of crystal oscillator 32mhz parameter min . typ . max . unit remarks oscillator frequency 32 .000 mhz frequency tolerance - 50 +50 ppm stabilization time after startup 2 msec note 1 note 1 guaranteed by design ( not tested ) 7.6. characteristics of crystal oscillator 32. 768khz parameter min . typ . max . unit remarks oscillator frequency 32.768 k hz frequency tolerance - 500 +500 ppm stabilization time after startup 1 sec note 1 note 1 guaranteed by design ( not tested ) 7.7. characteristics of power on timing operating conditions for por ( p ower o n r eset ) function. parameter symbol min . typ . max . unit remarks voltage of off state voff 0.05 v n ote 1 interval of under voff tvoff 500 msec n ote 1 rising time tr 10 msec n ote 1 stabilized state vdd vddstb 2.0 3. 7 v note 1 note 1 guaranteed by design ( not tested ) figure 5 power on timing note 2 reset release timing is follows, auto pin =h , the first rising edge of losc clock auto pin =l, the falling edge of sw1 pin vddstb 0 t v off tr [s ec ] [v] 0.05v vddstb / 2 voff reset release note2 reset signal reset reset release 1s ec
[ak 1594 ] 018003497 - e - 00 - 13 - 2018/3 7.8. characteristics of timer parameter min . typ . max . unit remarks tch_int (8+ { pdulen[5:0] } ) * 8 + 30 sec advinterval 0.1 0 10.24 sec 15 control bits which is programmed by eeprom a dvdelay 0 10 ms ec randomly generated 4 control bits. figure 6 interval of advertising event rfout 37ch 38ch 39ch 37ch 38ch 39ch tch_int advertising event tch_int t_advevent = advinterval + a dvdelay advertising event
[ak 1594 ] 018003497 - e - 00 - 14 - 2018/3 8. electric characteristics of digital interface the specifications are applicable within recommended operating range (supply voltage/operating temperature). 8.1. digital dc characteristics parameter symbol pin conditions min . typ . max . unit high level input voltage vih note 1 0. 8 ? ? ? ? ? ? 8.2. digital ac characteristics switchover timing of d igital ac characteristics are specified at 1/2vdd level unless otherwise noted. 8.2.1. serial interface timing parameter symbol min . typ . max . unit remarks sclk t skp 1000 - - nsec sclk pulse width tskw 500 - - nsec cs high level to sclk high level delay tcss 100 - - nsec sclk low level to cs low level delay tcslw 5 - msec @ write access tcsl 100 - - nsec @read access setup time tdis 100 - - nsec hold time tdih 100 - - nsec transient time (rise) tr 100 nsec note1 transient time (fall) tf 100 nsec note1 output delay tdly - - 300 nsec output load cl<15pf note 1 guaranteed by design ( not tested )
[ak 1594 ] 018003497 - e - 00 - 15 - 2018/3 figure 7 ac timing of serial interface 8.2.2. timing chart of eeprom access figure 8 timing chart of eeprom access sclk cs sdat(input) tr tskw 10% tdih tcss tskp tcsl 90% tf tdis tcslw 50% 50% sdat tdly 50% 50% 50% (address+1 ) note3 note 2 note2 a. eeprom write mode address write data write a5 a4 a3 a2 a1 a0 d15 d14 d13 d2 d 1 d 0 sclk cs sdat osc address read data read a5 a4 a3 a2 a1 a0 d15 d 0 d 15 d 0 sclk cs sdat osc b. eeprom read mode note 1 need to wait for osc 32.768kh z and osc 32mhz stabilizatio n time (more than 1002 m sec) . set sclk pin = l during this period. note 2 need to wait for write time to eeprom memory cell (more than 5msec). set sclk pin = l during this period. note 3 as read time from eeprom, 4 cycles of sclk clock are needed. note 4 need to eerprom access when auto pin = l and full power down state. eeprom cannot access when burst transmission . note1 sleep state sleep sta te address write data a5 a4 a3 a2 a1 a0 d15 d14 d13 d2 d 1 d 0 read data d 0 read data read data d 0 read data d15 d 0 d 0 read data sw1 - 4 pin ( h ) sw1 - 4 pin ( h ) d15 d15 d15 ( address+2 ) ( address+3 ) ( address+n ) ( address+n+1 ) note1
[ak 1594 ] 018003497 - e - 00 - 16 - 2018/3 8.2.3. sw1 pin , sw2 pin, sw3 pin, sw4 pin timing parameter symbol min . typ . max . unit remarks low pulse width t s w l 25 - - m s ec high pulse width tswh 25 - - m s ec figure 9 ac timing of switch pin sw1 pin , sw2 pin t sw l 50% sw3 pin , sw4 pin t sw l 50% t sw h
[ak 1594 ] 018003497 - e - 00 - 17 - 2018/3 9. operation state 9.1. state description t h e ak1594 has 5 - state. s tate description full power down all blocks are powered down. 32.768khz clock stabilization the ak1594 is in stand - by state in order to stabilize 32.768khz clock. 32mhz clock stabilization + read eeprom the state that t he ak1594 is reading eeprom data during the 32 m hz clock stabilization state. transmitter on (tx on) rf transmissions followed by tx data generation from the eeprom, pll and rfamp power up. sleep stand - by status for next advertising event after rf transmissions. the term burst transmission means following 3 - state transition . figure 10 burst transmission 32mhz clock stabilization + read eeprom transmitter on (tx on) sleep 32mhz clock stabilization + read eeprom transmitter on (tx on)
[ak 1594 ] 018003497 - e - 00 - 18 - 2018/3 10. function description 10.1. tx mode there are two transmission modes continuous burst mode and configured tx mode . continuous burst mode: {mode} = 0b 0 t h e ak1594 continues rf transmission until the ak1594 detects sw2 pin falling edge . sw2 pin falling edge valid only auto pin = "l" and {sw2_dis} = " 0b 0". configured tx mode: {mode} = 0b 1 t h e ak1594 automatically stops transmission and goes to power down status after configured number of transmission is attempted. the ak1594 can configure 1 to 5 transmissions that is set by { eventnum [ 2:0]} t h e ak1594 automatically stops transmission triggered on sw1 falling edge. after the ak1594 detects sw1 pin falling edge, the ak1594 does advertising transmission configured number of time (note), and then goes into power down status. note: the ak1594 can configure 1 to 5 trans missions that is set by { eventnum [ 2:0]} figure 11 continuous burst mode {mode}= 0b 0 figure 12 configured tx mode {mode} = 0b1 and {eventnum[2:0]} = 0d5 (reset) burst transmit burst transmit rfout sw1 sw2 note1: sw2 pin falling edge is valid when auto pin = "l" and {sw2_dis} = "0b0". rfout output no.1 sw1 output no.2 output no.3 output no.4 output no.5 burst transmit burst transmit burst transmit (reset) rfout sw1
[ak 1594 ] 018003497 - e - 00 - 19 - 2018/3 figure 13 configured tx mode {mode} = 0b1 and {eventnum[2:0]} = 0d3 10.2. power mode there are two mode based on output power, normal power mode and high power mode by setting {powr_mode[1:0]}. normal power mode has a benefit to save power. high power mode supports + 6dbm ( typ. ) output. 10.3. auto operation mode when auto pin set to high , the ak1594 starts burst transmission automatically after the ak1594 powered - on . {mode} register is 0b0 automatically when auto pin = h . {sw2_dis } value is 0b1 automatically when auto pin = h . ak1594 eeprom cannot access when auto pin = h . ak1594 eeprom access valid auto pin = l and full power down state. burst transmit burst transmit burst transmit (reset) rfout sw1
[ak 1594 ] 018003497 - e - 00 - 20 - 2018/3 10.4. switch action 10.4.1. sw1 pin the ak1594 starts burst transmission triggered on sw1 pin input falling edges. 10.4.2. sw2 pin the ak1594 sets to full power down state triggered on sw2 pin input falling edges during burst transmission . {sw2_dis} enables or disables this function. this func tion is ignored when auto pin = h . 10.4.3. sw1 and sw2 simultaneous control (reset) when sw1 pin and s w2 pin are status low simultaneously more than 2 seconds, the ak1594 resets internal digital blocks. 10.4.4. sw3 pin sw3 provides two functions, power step adjustment and high power switch . - power step adjustment ({sw3_func } = 0b 0) tx power is changed every sw3 pin input triggered on falling edges. the ak1 594 supports 6 - state power transition (sw3state) and power step size is defined by {sw3step[2:0]} . t h e ak1594 led function helps to determine which power state is configured monito ring num ber of led blinks. when the ak1594 doesnt detect another sw3 falling edge for more than 4 seconds after the sw3 falling edge detection, the ak1594 finishes internal process and begins burst transmission with the latest power state setting . - high power switch ({sw3_func } = 0b 1) the ak1594 switches transmission power to maximum by sw3 pin input. the maximum power is programmed by register ( { powr_mode [1 :0 ] } = 0b 1 1 , { powrd [4:0] } = 31 ). after maximum power is set by this function , the ak1594 transmission power will not go down from maximum power setting unless powered off (por) or sw1 and sw2 simultaneous control.
[ak 1594 ] 018003497 - e - 00 - 21 - 2018/3 figure 14 transmission power step adjustment figure 15 high power switch rfout state1 sw3 state state2 state3 state4 state5 state6 state1 state2 sw3 tx gain code [ powerd[4 :0] ] sw3step[2:0] sw3step[2:0] sw3step[2:0] sw3step[2:0] sw3step[2:0] sw3step[2:0] 4 sec state3 sw3step[2:0] rfout normal power mode hi power switch sw3 tx power code powerd[5:0] : eeprom value powr_mode[1 :0] : eeprom value powr_mode[1 :0] =
[ak 1594 ] 018003497 - e - 00 - 22 - 2018/3 10.4.5. sw4 pin a dvertising interval is changed every sw 4 pin input triggered on falling edges. the ak1594 supports 6 - state advertising interval (sw4state) and advertising interval length is defined by {sw4step[2:0]}. t h e ak1594 led function helps to determine which advertising interval length is configured mon itoring n u m ber of led blinks. when the ak1594 doesnt detect another sw 4 falling edge for more than 4 seconds after the sw 4 falling edge detection, the ak1594 finishes internal process and begins burst transmission with the latest advertising interval leng th setting . figure 16 advertising interval step adjustment 10.5. reset in order to reset the ak1594 all functional blocks , following conditions are required. - meet power on reset conditions; please refer 7.7 characteristics of power on timing . - s w1 pin and sw2 pin are status low simultaneously more than 2 seconds ; please refer 10.4.3 . rfout state1 sw4 state state2 state3 state4 state5 state6 state1 state2 sw4 advertising interval code advintvl [4 :0] sw4 step[2:0] sw4 step[2:0] sw4 step[2:0] sw4 step[2:0] sw4 step[2:0] sw4 step[2:0] 4 sec state3 sw4 step[2:0]
[ak 1594 ] 018003497 - e - 00 - 23 - 2018/3 10.6. switch detector the ak1594 samples status of sw2, sw3 and sw4 falling edges by 7.8125ms cycle. when t he ak1594 detects s ame status for the second time in a low, the switch status is upd ated at the next sampling timing. refer figure 18 timing chart of sw2/sw3/sw4 detector . figure 17 circuit of sw2/sw3/sw4 detector figure 18 timing chart of sw2/sw3/sw4 detector sw* 0 1 decision sw* p re decision sw* sw2 - 4 pin sampling 7.8125 msec cycle off on pre switch status sw* switch status sw* 1 sample clock delay on off on off
[ak 1594 ] 018003497 - e - 00 - 24 - 2018/3 10.7. battery monitor the battery monitor controls led and can set the ak1594 in power down. led control the battery monitor control s led light on or blinks w h en a vdd voltage drops below detect voltage1 ( valert ) . p ower d own c ontroller the battery monitor set s the ak1594 in full power down status w h en avdd voltage dr ops below detect v oltage 2 n or detect voltage2h . ( vsleepn or vsleeph ) this function is controlled by {bat_en}. detect voltage1 is not available when {powr_mode } = 0b 10 , or 0b 11 . refer to 7.3 characteristics of battery monitor . 10.8. le d t h e ak1594 has handy led functions to know device status. l ed pin drives 1ma or 3ma setting by {i_led}. to disable led function for saving power consumption , led pin should be set to open or disable all registers listed below . ({sw1led_en} = {sw2led_en} = {sw3led_en} = {sw4_led_en} = {bat_led_en} = 0b0) led blink mode eeprom setting led status sw1pin f alling {sw1led_en} = 0b 1 : led enable ({sw1led_en} = 0b 0 : led disable ) n ormally on during sw1 pin = l sw2 pin f alling {sw2led_en} = 0b 1 : led enable ( {sw2led_en} = 0b 0 : led disable) n ormally on during sw2 pin = l sw3 pin f alling and {sw3_func}= {sw3_func}= 0b 0 and {sw3led_en} = 0b 1 : led enable ( {sw3led_en} = 0b 0 : led disable) as many state when sw3 pin falling sw3 pin f alling and {sw3_func}= {sw3_func}= 0b 1 and {sw3led_en} = 0b 1 : led enable ( {sw3led_en} = 0b 0 : led disable) cyclic 9.750s sleeps and 0.25s blinks after sw3 pin falling sw4pin falling {sw4_led_en} = 0b 1 : led enable ( {sw4_led_en} = 0b 0 : led disable as many state when sw4 pin f alling avdd voltage drops below detect voltage1 at normal power mode {bat_en} = 0b 1 and {bat_led_en} = 0b 1 : led enable ( {bat_led_en} = 0b 0 : led disable) {bat_sel1} = 0b 0 0b 1
[ak 1594 ] 018003497 - e - 00 - 25 - 2018/3 11. power - up sequence ak1594 power - up sequence is below. figure 19 power - up sequence (auto pin = l ) dcvdd pin avdd pin auto pin auto pin = "l" sw1 pin falling edge sw1 pin sw2 pin falling edge sw2 pin por release [por] 32.768khz stabiliztion start [32.768khz clock] 32mhz stabiliztion start 32mhz stabilization start [32mhz clock] [rf transmitter] state ble data transmit frequency = {advch1[2:0]} ble data transmit frequency = {advch2[2:0]} ble data transmit frequency = {advch3[2:0]} full power down full power down sleep mhz clock stabilization eeprom read tx on tx on khz clock stabilization sleep ble data transmit frequency = {advch1[2:0]} ble data transmit frequency = {advch2[2:0]} ble data transmit frequency = {advch3[2:0]} mhz clock stabilization eeprom read unknown 2.1 msec 2.1 msec advertising interval = 100 ms to 10.24 s + delay khz osc stabilization time ( 1sec max.) mhz clock stabilization time ( 2msec max.) mhz clock stabilization time ( 2msec max.)
[ak 1594 ] 018003497 - e - 00 - 26 - 2018/3 figure 20 power - up sequence (auto pin = h ) dcvdd pin avdd pin auto pin = "h" auto pin sw1 pin sw2 pin folling edge is invalid when auto pin = "h" sw2 pin por release: automaticaly [por] 32.768khz stabiliztion start [32.768khz clock] 32mhz stabiliztion start 32mhz stabiliztion start [32mhz clock] [rf transmitter ] state sleep khz clock stabilization tx on tx on ble data transmit frequency = {advch1[2:0]} ble data transmit frequency = {advch2[2:0]} ble data transmit frequency = {advch3[2:0]} sleep ble data transmit frequency = {advch1[2:0]} ble data transmit frequency = {advch2[2:0]} ble data transmit frequency = {advch3[2:0]} unknown mhz clock stabilization eeprom read mhz clock stabilization eeprom read 2.1 msec typ. 2.1 msec mhz clock stabilization time ( 2msec max.) advertising interval = 100 ms to 10.24 s + delay khz osc stabilization time ( 1sec max.) mhz clock stabilization time ( 2msec max.)
[ak 1594 ] 018003497 - e - 00 - 27 - 2018/3 12. power up flow ak1594 power u p flow is below. figure 21 ak1594 power up flow rf transmit full power down detect sw1 pin falling edge stand - by for 32.768khz clock stabilization transmit power change (sw3 pin) or advertising interval change (sw4 pin) not detect sw3 pin or sw4 pin falling edge for 4 sec sleep finish the advertising interval sw1 and sw2 are status low simultaneously 2 seconds (note2) detect sw3 pin or sw4 pin falling edge (note3) note1) it becomes valid only auto pin = "l" and {sw2_dis} = "0b0". note2) the ak1594 is reset when sw1 and sw2 set to l more than 2 seconds at the same time. the ak1594 goes to full power down if sw1 and sw2 are kept l state simultaneously after the reset. note3) sw3 pin function becomes valid only {sw3_func} ="0b0". when {sw3_func} = "0b1", the transmission power will not be changed by sw3 falling edge after the ak1594 sets transmitter gain to maximum. note4) the ak1594 set output no ="1" after the reset. auto pin="h" no yes detect sw2 pin falling edge (note1) reset power on finish the advertising event por (power on reset) release sw1 pin or sw2 pin "low" status {mode} = "0b1" and output no = {eventnum[2:0]} note4
[ak 1594 ] 018003497 - e - 00 - 28 - 2018/3 figure 22 ak1594 rf transmit flow txon ?`` rf transmit start no stand - by for 32mhz clock stabilization and eeprom read ble data transmit frequency = {advch1[1:0] } ble data transmit frequency = {advch2[1:0] } ble data transmit frequency = {advch3[1:0] } yes {advch2[1:0]} = "0b11" no {advch3[1:0]} = "0b11" no yes {mode} = "0b1" and output no = {eventnum[2:0]} full power down yes {mode} = "0b1" output no = output no +1 sleep no yes output no = 1
[ak 1594 ] 018003497 - e - 00 - 29 - 2018/3 13. eeprom function 13.1. eeprom access the ak1594 supports eeprm a ccess via the serial interface. the value (0) or (1) or 0x06, 0x07, 0x08 address in the eeprom map below is fixed . please set values listed in the eeprom map . ex. 0x08 = 0x 0000 . access to other eeprom address listed in the table below is prohibited. 13.2. eeprom map < name > addr . d 15(msb) d 14 d 13 d 12 d 11 d 10 d 0 9 d 0 8 d 0 7 d 0 6 d 0 5 d 0 4 d 0 3 d 0 2 d 0 1 d 0 0(lsb) akm1 0x0 0 akmtest akm2 0x0 1 mode 1 , fixed 0x0 2 bat_en bat_led_en bat_sel1 bat_sel2 i_led (0) (0) mode advch1[1] advch1[0] advch2[1] advch2[ 0 ] advch3[1] advch3[0] txdata_loop txdata_cw mode2 , fixed 0x0 3 (0) powr_mode[1] powr_mode[0] powrd[4] powrd[3] powrd[2] powrd[1] powrd[0] (0) (0) (0) (1) (0) (1) (0) (0) swact 0x0 4 (0) sw1led_en eventnum[2] eventnum[1] eventnum[0] sw2_dis sw2led_en sw3_func sw3led_en sw3step[2] sw3step[1] sw3step[0] sw4led_en sw4step[2] sw4step[1] sw4step[0] advint 0x0 5 (1) advintvl[ 14 ] advintvl[ 13 ] advintvl[ 12 ] advintvl[ 11 ] advintvl[ 10 ] advintvl[ 9 ] advintvl[8] advintvl[ 7 ] advintvl[ 6 ] advintvl[ 5 ] advintvl[ 4 ] advintvl[ 3 ] advintvl[ 2 ] advintvl[ 1 ] advintvl[0] fixed 0x0 6 (0x0800) fixed 0x0 7 (0x010c) fixed 0x0 8 (0x0000) preamble 0x0 9 crc_en white_en pdulen[5] pdulen[5] pdulen[4] pdulen[3] pdulen[2] pdulen[1] preamble access address 0x0 a access address1 access address2 0x 0b access address3 access address4 pdu 0x 0c pdu1 pdu2 0x 0d pdu3 pdu4 0x 0e pdu5 pdu6 0x 0f pdu7 pdu8 0x 10 pdu9 pdu10 0x 11 pdu11 pdu12 0x 12 pdu13 pdu14 0x 13 pdu15 pdu16 0x 14 pdu17 pdu18 0x 15 pdu19 pdu20 0x 16 pdu21 pdu22 0x 17 pdu23 pdu24 0x 18 pdu25 pdu26 0x 19 pdu27 pdu28 0x 1a pdu29 pdu30 0x 1b pdu31 pdu32 0x 1c pdu33 pdu34 0x 1d pdu35 pdu36
[ak 1594 ] 018003497 - e - 00 - 30 - 2018/3 < name > addr . d 15(msb) d 14 d 13 d 12 d 11 d 10 d 0 9 d 0 8 d 0 7 d 0 6 d 0 5 d 0 4 d 0 3 d 0 2 d 0 1 d 0 0(lsb) 0x 1e pdu37 pdu38 0x 1f pdu39 crc crc1 0x 20 crc2 crc3 note 1 when ak1594 status is eeprom read in 11 . power - up sequence figure 19 or figure 20 , the eeprom setting is valid. t he ak1594 just stores raw data in the eeprom. the eeprom setting becomes valid once the raw data is transferred to the internal register . note 2 all internal register values are set to 0 after reset. note 3 when the ak1594 goes into full power down state, a ll internal r egister values are set to 0 except {i_led} , {sw1led_en}, {sw2_dis} and {sw2led_en }.
[ak 1594 ] 018003497 - e - 00 - 31 - 2018/3 13.2.1. akm1 , akm2 (0x00 , 0x01 ) do not access these address. 13.2.2. mode1 (0x02 ) 13.2.2.1. bat_en battery monitor enable bat_en function 0 battery monitor function disable 1 battery monitor function enable 13.2.2.2. bat_led_en led function enable bat_led_en function 0 led disable 1 led enable note 1 this setting is valid only when { bat_en } = 0b 1. note 2 detect voltage1 is 2.3v typ . note 3 refer to 10.7 battery monitor 13.2.2.3. bat_sel1 led on/blink selector bat_sel1 function 0 led on 1 led blink note3 note 1 this setting is valid only when { bat_en } = 0b 1 and { bad_led_en } = 0b 1. note 2 detect voltage1 is 2.3v typ . note 3 9.750s ec sleeps and 0.25s ec blinks note 4 refer to 10.7 battery monitor 13.2.2.4. bat_sel2 full power down mode enable for battery monitor bat_sel2 function 0 full power down disable 1 full power down enable note 1 this setting is valid only when { bat_en } = 0b 1 note 2 when power mode is normal, detect v oltage2 = 2.0v min . when power mode is high, detect v oltage2 = 2.225v min. note 3 refer to 10.7 battery monitor 13.2.2.5. i_led led current setting i_led function 0 1.0 ma 1 3.0 ma note 1 all internal register values of the ak1594 are 0 right after resetting. {i_led} setting becomes valid after th e process that the ak1594 transf ers eeprom data to the internal register. {i_led} is 0 during this transfer process even if {i_led} is set to 1.
[ak 1594 ] 018003497 - e - 00 - 32 - 2018/3 13.2.2.6. b eacon operating mode setting mode function 0 continuous burst mode 1 configured tx mode note 1 when auto pin is h, the ak1594 keeps continuous transmission, which is {mode } = 0b 0, even if {mode} is set to 0b 1 . 13.2.2.7. advertising channel 1st setting advertising channel 1st setting advch1[1] advch1[0] function 0 0 37ch 0 1 38ch 1 0 39ch 1 1 37ch note 1 this value is used as advertising channel index for data whitening 13.2.2.8. advertising channel 2nd setting advertising channel 2nd setting advch2[1] advch2[0] function 0 0 37ch 0 1 38ch 1 0 39ch 1 1 off note 1 this value is used as advertising channel index for data whitening note 2 in case of { advch2[1:0] } = 0b 11 , t he ak1594 doesn t output 2nd, 3rd advertising channel output. 13.2.2.9. advertising channel 3rd setting advertising channel 3rd setting advch3[1] advch3[0] function 0 0 37ch 0 1 38ch 1 0 39ch 1 1 off note 1 this value is used as advertising channel index for data whitening note 2 in case of { advch 3 [1:0] } = 0b 11 , t he ak1594 doesn t output 3rd advertising channel .
[ak 1594 ] 018003497 - e - 00 - 33 - 2018/3 setting example 1) advertising channel 1st: 37ch advertising channel 2nd: 38ch advertising channel 3rd: 39ch register name value advch1[1:0] 0b 00 (37ch) advch2[1:0] 0b 01 (38ch) advch3[1:0] 0b 10 (39ch) setting example 2) advertising channel 1st: 3 9 ch advertising channel 2nd: 3 7 ch advertising channel 3rd: 3 8 ch register name value advch1[1:0] 0b 10 (3 9 ch) advch2[1:0] 0b 0 0 (3 7 ch) advch3[1:0] 0b 0 1 (3 8 ch) setting example 3) advertising channel 1st: 37ch advertising channel 2nd: 38ch advertising channel 3rd: off register name v alue advch1[1:0] 0b 00 (37ch) advch2[1:0] 0b 01 (38ch) advch3[1:0] 0b 11( off ) rfout 37ch 38ch 39ch 37ch 38ch 39ch advertising event advertising event rfout 39 ch 37 ch 38 ch 39 ch 37 ch 38 ch advertising event advertising event rfout 37ch 38ch 37ch 38ch advertising event advertising event
[ak 1594 ] 018003497 - e - 00 - 34 - 2018/3 setting example 4) advertising channel 1st: 37ch advertising channel 2nd: off advertising channel 3rd: off register name v alue advch1[1:0] 0b 00 (37ch) advch2[1:0] 0b 11( off ) advch3[1:0] 0b 11( off ) rfout 37ch 37ch advertising event advertising event
[ak 1594 ] 018003497 - e - 00 - 35 - 2018/3 13.2.2.10. txdata_loop txdata_loop function 0 burst transmission 1 continuous transmission please set { txdata_loop } = 0b 0 except regulatory testing. this register is en abled when cs pin is = h . the ak1594 transmits continuous signal via rfout pin. channel frequencies are set by { advch1[1:0] } . data whitening is done by based on { advch1[1] } setting when {white_en} = 0b1 . 13.2.2.11. txdata_cw modulation mode select txdata_cw function 0 gfsk 1 continuous wave please set { txdata_ cw } =0 except regulatory testing. the ak1594 transmits fixed frequency signal via rfout when { txdata_cw } = 1. the frequency setting is set by { advch1[1:0] } to { advch3[1:0] } that are 37ch = 2402mhz , 38ch = 2426mhz , 39ch = 2480mhz. 13.2.3. mode2 (0x03 ) 13.2.3.1. powr_ mode [ 1:0] power mode setting powr_mode[1] powr_mode[0] function 0 0 norma l power mode 0 1 prohibited 1 don t care high power mode
[ak 1594 ] 018003497 - e - 00 - 36 - 2018/3 13.2.3.2. powrd[4:0] ( tx power setting) for normal power mode figure 23 powrd code vs output power for normal mode note 1 the output power ( figure 23 ) i s a reference value. output power specification will be changed by rf matching network and board design.
[ak 1594 ] 018003497 - e - 00 - 37 - 2018/3 for high power mode figure 24 pow r d co de vs output power for high power mode note 1 the output po wer ( figure 24 ) is a r eference value. output power specification will be changed by rf matching network and board design.
[ak 1594 ] 018003497 - e - 00 - 38 - 2018/3 13.2.4. swact (0x04 ) 13.2.4.1. sw1led_en led on/off for sw1 pin sw1led_en function 0 led off 1 led on led on when sw1 pin = l . note 1 all internal register values of the ak1594 are 0 right after resetting. { sw 1 led_en} setting becomes valid after the process that the ak1594 trans f ers eeprom data to the inter nal register . {sw 1 led_en} is 0 b0 during th is transfer process even if {sw 1 led_en} is set to 0b 1. 13.2.4.2. eventnum[2:0] the number of advertising event setting eventnum [2] eventnum [ 1 ] eventnum [ 0 ] function 0 0 0 p rohibited 0 0 1 1time a dvertising event 0 1 0 2 times a dvertising event 0 1 1 3 times a dvertising event 1 0 0 4 times a dvertising event 1 0 1 5 times a dvertising event 1 1 0 p rohibited 1 1 1 p rohibited note 1 { eventnum [2:0]} is enabled by setting { mode } = 1 . 13.2.4.3. sw2_dis sw2 pin disable setting sw2_dis function 0 sw2 pin enable 1 sw2 pin disable note 1 all internal register values of the ak1594 are 0 right after resetting. {sw2_dis} setting becomes valid after th e process that the ak1594 transf ers eeprom data to the internal register. {sw2_dis} is 0 during this transfer process even if {sw2_dis} is set to 1. note 2 {sw2_dis} = 1 automatically when auto pin = h. 13.2.4.4. sw2led_en led on/off for sw2 pin sw2led_en function 0 led off 1 led on led on when sw2 pin = l . note 1 { sw2led_en } is enabled by { sw2_dis } = 0b 0 note 2 all internal register values of the ak1594 are 0 right after resetting. { sw2led_en } setting becomes valid after th e process that the ak1594 trans f ers eeprom data to the internal register . {sw2led_en} is 0 b0 during this transfer process even if {sw2led_en} is set to 0b 1.
[ak 1594 ] 018003497 - e - 00 - 39 - 2018/3 13.2.4.5. sw3_func sw 3 pin function setting sw3_func function 0 power step adjustment is enabled 1 high power switch is enabled. transmission power is set by { powr_mode[1] } = 0b 1 , and powrd[4:0]= 31 refer to 10.4.4 sw3 pin . 13.2.4.6. sw3led_en led on/off for sw3 pin sw3led_en function 0 led off 1 led on note 1,2 note 1 when { sw3_func } = 0b 0 , led blinks based on { sw3step [2:0] } setting. note 2 when { sw3_func } = 0b 1 , led blinks 0.25s and 9.750s sleeps. 13.2.4.7. sw3step [ 2:0] transmission power step adjustment sw3step[2] sw3step[1] sw3step[0] s tep value [dec ] 0 0 0 p rohibited 0 0 1 1 - - - - 1 1 0 6 1 1 1 7 note 1 {sw3step[2:0 ] } are enabled by { sw3_func } = 0b 0 when {sw3_func} = 0b 0 , t he ak1594 changes output power at t he sw3 pin falling edge. tx power is set by {powrd [ 4:0]}) when sw3 pin set to high to low, ak1594 changes status fr om burst transmission to tx power setting mode. the ak1594 changes tx power every sw3 pin falling edge during the tx power setting mode. the ak1594 changes status sw3 state1 sw3 state2 sw3 state3 sw3 state4 sw3 state5 sw3 state6 sw3 state1 sw3 state2 , number of led blinks shows status when {sw3led_en}= 0b 1 . led blinking cycle is 360 msec. when the ak1594 doesn t detect another sw3 pin falling edge for more than 4 seconds after the sw3 pin falling edge detection, the ak1594 finishes this power step ad justment process and returns to burst transmission . refer to 10.4.4 sw3 pin . sw3 state tx power formula note 1 number of led blink times ( note 2) s tate1 { powrd[4:0] } C C C C C C 0b 0 . if the calculation result is negative, the ak1594 just set tx power code = 0b 0 . as the result. note 2 led function is enabled by setting {sw3led_en} = 0b 1 .
[ak 1594 ] 018003497 - e - 00 - 40 - 2018/3 13.2.4.8. sw4led_en sw4 pin led on/off setting sw4led_en function 0 led off 1 led blinks as many sw4step[2:0] state when sw4 pin falling 13.2.4.9. sw4step[2:0] advertising interval s tep adjustment sw4step[2:0] interval step [msec] 000 0.625 001 10 010 20 011 50 100 100 101 200 110 500 111 1000 the ak1594 changes advertising interval at the sw4 pin falling edge. advertising intervals are set by { advintvl [ 14:0] } when sw4 pin set to high to low, ak1594 changes status from burst transmission to advertising interval setting mode. t he ak1594 changes interval timing every sw 4 pin falling edge during the advertising interval setting mode. the ak1594 changes status sw4 state1 sw4 state2 sw4 state3 sw4 state4 sw4 state5 sw4 state6 sw4 state1 sw 4 state2 , number of led blinks shows status when { sw4led_en } = 0b 1 . led blinking cycle is 360 msec. when the ak1594 doesn t detect another sw4 falling edge for more than 4 seconds after the sw4 falling edge detection , the ak1594 finishes this advertising interval step adjustment process and returns to burst transmission . refer to 10.4.5 sw4 pin . sw4 state a dvertising interval formula note 1 number of led blink times ( note 2) s tate1 0b 1 .
[ak 1594 ] 018003497 - e - 00 - 41 - 2018/3 13.2.5. advint (0x05 ) 13.2.5.1. advertising i nterval setting advintvl[14:0] a dvertising interval[ms ec] 000 0000 0000 0000 p rohibited ~ ~ (p rohibited) 000 0000 1001 1111 p rohibited 000 0000 1010 0000 100.000 000 0000 1010 0001 100.625 000 0000 1010 0001 101.250 ~ ~ 011 1111 1111 1110 10238.750 011 1111 1111 1111 10239.375 100 0000 0000 0000 10240.000 other setting 10240.000 advertising interval setting example) eeprom 0x05 value advertising interval [msec] 0x8 0a0 100 0x8 140 200 0x8 1e0 300 0x8 280 400 0x8 320 500 0x8 3c0 600 0x8 460 700 0x8 500 800 0x8 5a0 900 0x8 640 1000 0x8 c80 2000 0x9 2c0 3000 0x9 900 4000 0x9 f40 5000 0xa 580 6000 0xa bc0 7000 0xb 200 8000 0xb 840 9000 0xb e80 10000
[ak 1594 ] 018003497 - e - 00 - 42 - 2018/3 13.2.6. preamble (0x0 9 h[15:8]) 13.2.6.1. crc_en crc setting crc_en function 0 crc disable 1 crc enable note 1 please set {crc_en} = 0b 1 except regulatory testing. note 2 for details of crc function, refer to bluetooth ? specification 13.2.6.2. whitening_en data whitening setting white_en function 0 data whitening disable 1 data whitening enable note 1 please set {crc_en} = 0b 1 except regulatory testing. note 2 for details of whitening function, refer to bluetooth ? specification 13.2.6.3. pdu length setting pdulen[5:0] length[octet] 00 0000 p rohibited 00 0001 p rohibited 00 0010 2 00 0011 3 ~ ~ 10 0101 37 10 0110 38 10 0111 39 other setting 39 pdu length is the data length between access address and crc. preamble (1 octet) 1010101 0 ?? access address (4 octets) pdu (2~39 octets) crc (3 octets)
[ak 1594 ] 018003497 - e - 00 - 43 - 2018/3 13.2.7. tx data (0x0 9 - 0x 20 ) write tx data to the following addresses. preamble (0x09 [7:0]) access address(0x0a,0x0b) pdu(0x0c~0x1f[15:8]) crc(0x1f[7:0], 0x20) note1 u n u sed sectors value are don t care . t he eeprom maximum size for transmission data is 47octets. note 1 when { crc_en } = 0b 1 , crc(0x1f[7:0], 0x20) is not need be set. the output order of the data bits is as follows. < name > addr . d 15(msb) d 14 d 13 d 12 d 11 d 10 d 9 d 8 d 0 7 d 0 6 d 0 5 d 0 4 d 0 3 d 0 2 d 0 1 d0(lsb) data[15:0] - data[15] data[14] data[13] data[12] data[11] data[10] data[9] data[8] data[7] data[6] data[5] data[4] data[3] data[2] data[1] data[0] data[8] data[9] data[10] data[11] data[12] data[13] data[14] data[15] data[0] data[1] data[2] data[3] data[4] data[5] data[6] data[7] preamble (1 octet) 1010101 0 ?? access address (4 octets) pdu (2~39 octets) crc (3 octets) note1
[ak 1594 ] 018003497 - e - 00 - 44 - 2018/3 factory eeprom value address factory code address factory code 0x00 don
[ak 1594 ] 018003497 - e - 00 - 45 - 2018/3 14. lsi interface circuit no pin name i/o function 13 sdat i o digita l input / output pin 6 sw1 i digital input pin 9 sw2 i 16 sw3 i 17 sw4 i 25 auto i 19 data i 20 data2 i 11 sclk i digital input pin 12 cs i 5 led o analog output pin 22 rfout o analog output pin 2 0k 3 0 k constant current
[ak 1594 ] 018003497 - e - 00 - 46 - 2018/3 no pin name i/o function 4 lpfo io analog input / output pin 7 osc1 i analog input pin 8 osc2 o 15 losc1 i 14 losc2 o 18 testo o digital output pin 2 4 ldoc o analog output pin 23 paldo c o analog output pin 28 switch o
[ak 1594 ] 018003497 - e - 00 - 47 - 2018/3 15. recommended external circuits 15.1. recommended external circuits figure 25 recommended external circuits rfout paldo c ldoc vdd18 dcvss switch dcvdd losc2 sdat cs sclk vss sw2 osc2 avdd vss lpfo auto led sw1 osc1 rfvss data2 data testo sw4 sw3 losc1 led avdd, dcvdd l1 l2 l3 c1 c2 c3 c4 c6 c7 c8 c9 c10 c11 xo1 xo2 c20 c30 c40 c5 l4 c12
[ak 1594 ] 018003497 - e - 00 - 48 - 2018/3 15.2. external component number value parts number c1 0.22 f grm155r71c224ka12d c2 680pf grm1555c1h681ja01d c3 6.8pf grm1555c1h6r8ca01d c4 6.8pf grm1555c1h6r8ca01d c5 1.8pf gjm1555c1h1r8bb01d c6 10pf grm1555c1h100ja01d c7 10pf grm1555c1h100ja01d c8 100pf grm1555c1h101ja01d c9 10pf grm1555c1h100ja01d c10 1000pf GRM155R71H102KA01D c11 0.047 f grm155r71e473ka88d c12 0.6pf gjm1555c1hr60bb01d c20 10uf grm188c81c106ma73d c30 - c40 10uf grm188c81c106ma73d l1 3.3nh lqw15an3n3d10 l2 2.7nh lqw15an2n7c00d l3 4.7uh, avg dc resistance 0.44 ohm lqm18pn4r7mfrl l4 2.2nh lqg15hs2n2s02d x o 1 32mhz, load capacitance 6pf fa - 128 6 pf, q22fa12800517xx xo2 32.768khz, load capacitance 9pf fc - 135 9pf, q13fc13500003xx led - r eference value. rf specification will be changed by rf matching network and board design.
[ak 1594 ] 018003497 - e - 00 - 49 - 2018/3 16. package 16.1. outline dimensions 28 - pin qfn (4.0 x 4.0 x 0.70, 0.4mm pitch) (unit: mm) figure 26 package o uter dimension note 1 leave the exposed pad on the bottom surface of the package open. part a detailed chart in part a
[ak 1594 ] 018003497 - e - 00 - 50 - 2018/3 16.2. marking a. style : qfn b. number of pins : 2 8 pins c. a1 pin marking : circle d. product number : 1594 e. date code : xxxx (4 digits) figure 27 marking 1594 (d) xxxx (e ) (c)
[ak 1594 ] 018003497 - e - 00 - 51 - 2018/3 17. ordering guide - ak 1594 28 - pin qfn (4.0 mm x 4.0 mm x 0.70 mm , 0.4mm pitch) 18. revision history date (y/m/d) revision reason page contents 1 8 / 3 / xx 00 f irst edition all trademarks and registered trademarks are the property of their respective owners. bluetooth ? is a tradema rk of bluetooth sig, inc.
[ak 1594 ] 018003497 - e - 00 - 52 - 2018/3 important notice 0. asahi kasei microdevices corporation (akm) reserves the right to make changes to the information contained in this document without notice. when you consider any use or application of akm product stipulated in this document ( product ) , please make inquiries the sales office of akm or authorized distributor s as to current status of the products. 1. all information included in this document are provided only to illustrate the operation and application examples of akm p roducts . akm neit her makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of akm or any third party with respect to the information in this document. you are fully responsible for use of such information contained in this document in your product design or applications . akm assumes no liability for any losses incurred by you or third parties arising from the use of such inf ormation in your product design or applications. 2. the product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact , including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, sh ips and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance - related fields. do not use product fo r the above use unless specifically agreed by akm in writing . 3. though akm works continually to improve the products quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for yo ur hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. do not use or otherwise m ake available the product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapon s or missile technology products (mass destruction weapons). when exporting the p roducts or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedure s required by such laws and regulations. the p roducts and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. ple ase contact akm sales representative for details as to environmental matters such as the rohs compatibility of the product. please use the product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled subst ances, including without limitation, the eu rohs directive. akm assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. resale of the product with provisions different from the statement an d/or technical features set forth in this document shall immediately void any warranty granted by akm for the product and shall not create or extend in any manner whatsoever , any liability of akm. 7. this document may not be reproduced or duplicated, in an y form, in whole or in part, without prior written consent of akm .

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