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september 2003 1/24 STV6412A audio/video switch matrix features n i 2 c bus control n standby mode with interrupt signal output n video section C 4 cvbs inputs, 3 cvbs outputs (one with selectable chroma trap filter) C 3 y/c inputs, 2 y/c outputs C 6 db gain on all cvbs/y and c outputs C integrated 150 w buffers C 1 y/c adder C 2 rgb/fb inputs, 1 tri-state rgb/fb output with 6 db adjustable gain (from +3db to +9db) C video muting on all outputs C 2 slow blanking inputs/outputs C sync bottom clamp on all cvbs/yand rgb inputs, average clamp on c inputs C bandwidth: 15 mhz C crosstalk: 50 db minimum n audio section C 4 stereo inputs, 3 stereo outputs C 1 mono-sound output C stereo-to-mono sound capability C 0/6/9 db selectable gain on one stereo input C full range volume control with soft control C audio muting on all outputs description the STV6412A is a highly integrated i 2 c bus-con- trolled audio and video switch matrix, optimized for use in digital set-top box applications. it pro- vides all the audio and video routings required in a full two scart set-top box design. tqfp64 (14 x 14 x 1.40 mm) (thin full plastic quad flat pack) order code : STV6412Adt 1
table of contents 24 2/24 1 general overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.1 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.2 latch up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 audio section characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 video section characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5 chroma section characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 blanking section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.7 i2c bus characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 i 2 c bus selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.1 i 2 c bus addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 power-on reset bus register initial conditions . . . . . . . . . . . . . . . . . . . 17 4 input/output groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5 application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 6 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 1
STV6412A 3/24 1 general overview 1.1 pin connections figure 1. pinout diagram figure 2. pin description pin no. symbol description 1v cc +5 v supply 2 cvbsin_aux cvbs input from auxiliary 3 decv video decoupling capacitor 4 y/cvbsin_enc y/cvbs input from encoder 5 gnd ground 6 yin_enc y input from encoder 7 rin_aux audio right input from auxiliary 8 cin_enc chroma input from encoder 9 lin_aux audio left, input from auxiliary 10 r/cin_enc red/chroma input from encoder 11 rin_enc audio right, input from encoder 12 gin_enc green input from encoder 13 lin_enc audio left, input from encoder 14 bin_enc blue input from encoder 15 nc not connected 16 deca audio decoupling capacitor 17 gnd ground 18 y/cvbsin_vcr y/cvbs input from vcr scart 19 lin_vcr audio left, input from vcr scart fbout_tv fbin_vcr fbin_enc c_gate vdd add scl sda gnd it_out slb_tv r/cin_vcr slb_vcr gin_vcr vcc12 bin_vcr lout_tv filter aout_rf vout_rf vccb 5 bout_tv vccb 4 gout_tv gndb r/cout_tv vccb 3 y/cvbsout_tv vccb 2 cout_vcr vccb 1 y/cvbsout_vcr rout_tv vccao lout_vcr rout_vcr lout_cinch rout_cinch nc gnda vcca rin_tv lin_tv cvbsin_tv rin_vcr lin_vcr y/cvbsin_vcr gnd deca nc bin_enc lin_enc gin_enc rin_enc r/cin_enc lin_aux cin_enc rin_aux yin_enc gnd y/cvbsin_enc decv cvbsin_aux vcc 1
STV6412A 4/24 20 rin_vcr audio right, input from vcr scart 21 cvbsin_tv cvbs input from tv scart 22 lin_tv audio left, input from tv scart 23 rin_tv audio right, input from tv scart 24 v cca audio supply voltage - or - audio supply decoupling 25 gnda audio ground 26 nc not connected 27 rout_cinch audio right output to cinch 28 lout_cinch audio left output to cinch 29 rout_vcr audio right output to vcr scart 30 lout_vcr audio left output to vcr scart 31 v ccao audio output supply voltage - or - main audio supply voltage 32 rout_tv audio right output to tv scart 33 lout_tv audio left output to tv scart 34 filter chroma trap filter 35 aout_rf audio (l+r) output to rf modulator 36 vout_rf cvbs video output to rf modulator 37 v ccb5 video output buffer supply pin 38 bout_tv blue output to tv scart 39 v ccb4 video output buffer supply pin 40 gout_tv green output to tv scart 41 gndb video buffer ground 42 r/cout_tv red/chroma output to tv scart 43 v ccb3 video output buffer supply pin 44 y/cvbsout_tv y/cvbs output to tv scart 45 v ccb2 video output buffer supply pin 46 cout_vcr chroma output to vcr scart 47 v ccb1 video output buffer supply pin 48 y/cvbsout_vcr y/cvbs output to vcr scart 49 fbout_tv fast blanking output to tv scart 50 fbin_vcr fast blanking input from vcr scart 51 fbin_enc fast blanking input from encoder 52 c_gate external mos command for c_vcr bidirectional mode 53 v dd +5 v i 2 c supply 54 add i 2 c address selection 55 scl i 2 c bus clock 56 sda i 2 c bus data 57 gnd ground digital 58 it_out interrupt output 59 slb_tv slow blanking input/output from tv scart 60 r/cin_vcr red input (or c input) from vcr scart 61 slb_vcr slow blanking input/output from vcr scart 62 gin_vcr green input from vcr scart 63 v cc12 +12 v supply 64 bin_vcr blue input from vcr scart pin no. symbol description
STV6412A 5/24 figure 3. STV6412A block diagram 3 to 9 db 3 to 9 db 3 to 9 db 6 db 6 db 6 db c switch y/cvbs switch 6 db c switch rgb switch y/cvbs switch slow blank monitor interrupt signal vcr switch tv switch i2c bus decoder -62 db -62 db 0/6 db 0/6 db 0/6 db 0/6 db 0/6/9 db 0/6/9 db fb switch 0/6 db fbout_tv bout_tv gout_tv r/cout_tv vout_rf slb_tv slb_vcr y/cvbsout_vcr lout_vcr rout_vcr rout_cinch aout_rf rout_tv add sda scl lin_aux lin_enc lin_tv rin_aux rin_enc rin_tv lin_vcr rin_vcr fbin_enc fbin_vcr bin_enc bin_vcr gin_enc gin_vcr r/cin_enc r/cin_vcr cin_enc cvbsin_aux y/cvbsin_vcr yin_enc y/cvbsin_enc cvbsin_tv filter y/cvbsout_tv c_gate cout_vcr it_out lout_cinch lout_tv fbin_enc fbin_vcr bin_enc bin_vcr gin_enc gin_vcr r/cin_enc r/cin_vcr r/cin_vcr r/cin_enc cin_enc cvbsin_aux y/cvbsin_vcr yin_enc y/cvbsin_enc cvbsin_aux cvbsin_tv y_enc y/cvbsin_enc cin_enc r/cin_enc lin_aux lin_enc lin_tv rin_aux rin_enc rin_tv mute lin_enc lin_tv rin_aux rin_enc rin_tv mute lin_vcr rin_vcr lin_aux mute mute mute mute mute mute mute mute
STV6412A 6/24 figure 4. functional block diagram aud io r aux cvbs aud io l micro interr upt rf mo d r/c g b fast blank cvbs/y c audio l audio r audio l audio r y r/c g b fast blank cvbs/y audio l aud io r cvbs/y audio l aud io r c slow blank cinch out put scart2 vcr encod er r/c g b fast blank cvbs audio l audio r cvbs/y audio l aud io r slow blank scart1 tv cvbs aud io l+r STV6412A audio sw itches slow blank, i/o contro l r, g, b, fb sw itches cvbs/y sw itches chroma sw itches
STV6412A 7/24 2 electrical characteristics 2.1 absolute maximum ratings 2.1.1 thermal data 2.1.2 latch up at an ambiant temperature of 25 c, all pins meet the following specifications: C i trigger = 200 ma or i trigger = 200 ma. C pin 58 (it_out) does not meet this specification and the trigger current must be limited to -100 ma. 2.2 recommended operating conditions t amb =25c, v ccao = 12 v, v cc = 5 v, v cc12 = 12 v, v dd = 5 v r ga = 600 w , r louta = 10 k w , r gv = 50 w , r loutv = 150 w , unless otherwise specified. table 1. supply voltages table 2. active mode (all channels on) symbol parameter value units v cc12 supply voltage for: - slow blanking sections 13.2 v v ccao - audio drivers 13.2 v v cca - internal digital audio parts 10 v v dd - digital parts 6 v v cc , v ccbi - video sections 6 v v i voltage at pin i to gnd: - audio pins 0, v cca v - video pins 0, v cc or v ccbi v - bus pins 0, 5.5 v - slow blanking pins 0, v cc12 v v esd maximum esd voltage allowed. 100 pf capacitor discharged through 1.5 k w serial resistor (human body model) 4 kv t oper operating ambient temperature 0, +70 c t stg storage temperature -20, +150 c symbol parameter value units r th(j-a) junction-ambient thermal resistance (maximum) 48 c/w symbol parameter test conditions min. typ. max. units v dd digital supply voltage 4.75 5 5.25 v v ccao audio operating supply voltage - decoupling capacitor on v cca - connected to v cca 11.2 8.5 12 9 12.8 9.5 v v v cc video operating supply voltage 4.75 5 5.25 v v cc12 slow blanking control supply voltage 11.2 12 12.8 v symbol parameter test conditions min. typ. max. units i dd digital supply current v dd = 5 v 4.5 10 ma i cca audio supply current v ccao = 12 v, no load 9 15 ma
STV6412A 8/24 table 3. standby mode (all channels off) 2.3 audio section characteristics t amb = 25c, v ccao = 12 v, v cc = 5 v, v cc12 = 12 v, v dd = 5 v r ga = 600 w , r louta = 10 k w , r gv = 50 w , r loutv = 150 w , unless otherwise specified. table 4. audio section characteristics i ccv total video supply current (v cc +v ccb1 +v ccb2 +v ccb3 +v ccb4 +v ccb5 ) v cc = 5 v, no load 43 60 ma i cc12 12 v supply current v cc12 = 12 v slb input mode slb output mode, no load 0 2.5 1 4 ma symbol parameter test conditions min. typ. max. units symbol parameter test conditions min. typ. max. units i dd digital supply current v dd = 5 v 4.5 10 ma i ccastd audio supply current v cca0 = 12 v, no load 3 ma i ccvstd total video supply current v cc = 5 v 1 ma symbol parameter test conditions min. typ. max. units svr100 supply voltage rejection v ripple = 500m v rms at f = 100 hz, gain= 0 db, deca filter cap = 47 f deca filter cap = 220 f 60 70 80 db db svr1k supply voltage rejection v ripple = 500m v rms at f = 1 khz, gain = 0 db 70 80 db v indc input dc level v cca = 9 v v cc a/2 v v inac input signal amplitude 2v rms r in input resistance 30 50 k w r inmatch input resistance matching 2 10 % f range bandwidth -3 db, 0.5 v rms, r load = 10 k w, gain = 0db 50 khz flatness spread of gain in audio band -0.5 v rms, 20 hz to 20 khz, gain = 0 db 0.5 db cs channel separation, from audio in- puts between l & r of tv outputs v in =0.5v rms, f = 1 khz, on one in- put, r load = 10 k w , gain = 0 db 80 70 90 74 db db ci channel isolation from video inputs v in = 1 v pp, f = 15 khz, on one point 85 db v out output dc level v cca = 9 v v cc a/2 v v off dc offset change switching between inputs 1 15 mv r out output resistance 60 120 w phd phase difference f = 1 khz, 1 v rms input on each input channel 3 deg. asn s/n ratio f = 1 khz, 1 v rms input (gain = 0db) weighted ccir 468-4 quasi peak 70 db eni equivalent rms input voltage noise bw = 20 hz, 20 khz flat, gain = 0db 5v g0 0 db gain 0.5 v rms, r load = 10 k w , gain = 0db -0.5 +0.5 db
STV6412A 9/24 2.4 video section characteristics t amb =25c, v ccao = 12 v, v cc = 5 v, v cc12 = 12 v, v dd = 5 v r ga = 600 w , r louta = 10 k w , r gv = 50 w , r loutv = 150 w , unless otherwise specified. table 5. video section characteristics g step gain step -62 db to +6 db ( see figure 2) 2 db g match1 gain matching between different in- puts of one output v in = 0.5 v rms, 1 khz, gain = 0 db -0.5 0.5 db g match2 gain matching between left/right outputs of one input channel v in = 0.5 v rms, 1 khz, gain = 0 db -0.5 0.5 db thd0 thd6 thd9 total harmonic distortion enc input at 0 db enc input at 6 db enc input at 9 db v out = 0.5 v rms, 1 khz, lpf @ 80 khz 0.01 0.01 0.01 0.1 0.1 0.1 % % % v cl output clipping level thd = 0.2%, 1 khz 2.1 2.3 v rms r l output load resistance v in = 1 v rms, thd = 0.3%, gain = 0 db 2 2.25 k w mute mute suppression v in = 0.5 v rms, on one point -90 db symbol parameter test conditions min. typ. max. units symbol parameter test conditions min. typ. max. units v dcin dc input level bottom synch pulse 2 v i clamp clamping current at v dcin -400 mv 1 2 ma i leak input leakage current v in = v dcin +1 v 1 10 a c in input capacitance 2 pf v in max input signal v cc = 5 v 1.5 v pp dyn dynamic output signal v cc = 5 v 3 v pp bw bandwidth at -3 db y/cvbs rgb y/c mixer (on vout-rf) v in = 1 v pp v in = 1 v pp v in = 1 v pp, v inc = muted 12 12 8 15 15 10 mhz mhz mhz flatness spread of gain in video band (15 khz - 5 mhz) y/cvbs rgb y/c mixer (on vout-rf) v in = 1 v pp v in = 1 v pp v in = 1 v pp, v inc = muted +/-0.5 +/-0.5 +/-1.5 db db db cti crosstalk isolation between input channel v in = 1 v pp at f = 4.43 mhz, on one point 60 db cto crosstalk isolation between output channel v in = 1 v pp at f = 4.43 mhz, on one point, r load = 150 w 50 db r out output resistance 5 10 w g rgb gain at rgb outputs v in = 1 v pp, gain set to 6 db 5.5 6 6.5 db g rgbm gain matching between r, g, b v in = 1 v pp, gain set to 6 db -0.3 0 0.3 db g rgbstep step of gain 3 db to 6 db 0.75 1 1.25 db g ycvbs gain on y,/cvbs channels v in = 1 v pp 5.5 6 6.5 db g ycvbsm gain matching between y, cvbs in- puts v in = 1 v pp -0.5 0 0.5 db
STV6412A 10/24 note 1: s/n = 20 log (v out black to white = 0.7 v pp / v noise (mv rms ) weighted ccir 567). 2.5 chroma section characteristics t amb =25c, v ccao = 12 v, v cc = 5 v, v cc12 = 12 v, v dd = 5 v r ga = 600 w , r louta = 10 k w , r gv = 50 w , r loutv = 150 w , unless otherwise specified. table 6. chroma section characteristics 2.6 blanking section t amb =25c, v ccao = 12 v, v cc = 5 v, v cc12 = 12 v, v dd = 5 v r ga = 600 w , r louta = 10 k w , r gv = 50 w , r loutv = 150 w , unless otherwise specified. table 7. slow blanking section dc out dc output voltage bottom sync pulse 0.6 v dc out rf rf output voltage bottom sync pulse 1 v dphi differential phase v in = 1 v pp at f = 4.43 mhz 1 5 deg. dg differential gain v in = 1 v pp at f = 4.43 mhz 1 5 % mute mute suppression v in = 1 v pp at f = 5 mhz on one point -55 db lnl luminance non-linerarity 0.3 3 % vsn video s/n ratio refer to note 1 65 db symbol parameter test conditions min. typ. max. units symbol parameter test conditions min. typ. max. units v dcin dc input level 3 v r in input resistance 30 50 k w c in input capacitance 2 pf v in max input signal 1.5 v pp dyn dynamic output signal 3 v pp dc out dc output vcr voltage 2.2 v cbw chroma bandwidth c in = 1 v pp at -3 db 10 mhz cti crosstalk isolation between input channel v in = 1 v pp at f = 4.43 mhz, on one input 55 db cto crosstalk isolation between output channel v in = 1 v pp at f = 4.43 mhz, on one input, r load = 150 w 50 db r out output resistance 5 10 w g outc gain at outc v in = 1 v pp 5.5 6 6.5 db g cm gain matching between c inputs v in = 1 v pp -0.5 0 0.5 db mute mute suppression v in = 1 v pp at f = 4.43 mhz , on one input -55 db ctoydel chroma to luma delay, source y/c pin other than vout_rf, v pp @ 4.43 mhz, 20 ns ctoydel chroma to luma delay, source y/c pin vout_rf 20 ns symbol parameter test conditions min. typ. max. units input mode slblow input low level threshold 2.5 3.25 4 v slbhigh input high level threshold 7.5 8.25 9 v
STV6412A 11/24 table 8. fast blanking section table 9. c_gate function output table 10. interrupt output (refer to note 2 ) table 11. address selection input note 2: the interrupt is forced to a low level when a change is detected on slow blanking inputs. it can be used in standby mode to wak e up the microprocessor. it is released when the i 2 c bus register is read. i in input current 50 100 a output mode slblow output low level (int. tv) 0 0.02 1.5 v slbmed output medium level (ext. 16/9) 5 5.75 6.5 v slbhigh output high level (ext. 4/3) 10 11 12 v symbol parameter test conditions min. typ. max. units symbol parameter test conditions min. typ. max. units input mode fblow/high input low/high level threshold 0.4 0.7 0.9 v i in input current 210a output mode fb low output low level r load = 150 w 0.5 v fb high output high level 3.0 3.4 3.8 v fb del fast blanking rgb delay at 50% on digital rgb transients, at 2 v on fb rise transient, at 1 v on fb fall, c load = 10pf maximum 15 ns fb trans fb transitions at fb output rise time fall time c load = 10 pf maximum between 10% and 90% between 90% and 10% 10 10 ns ns symbol parameter test conditions min. typ. max. units c_gate-h pull-up resistor value to v ccb1 20 k w c_gate-l output low level i in = 0 ma i in = 1 ma 0.3 0.7 v v symbol parameter test conditions min. typ. max. units it-leak high level leakage external pull-up to 5 v 10 a it-low output low level (active) i in = 0 ma i in = 1 ma 0.3 0.7 v v symbol parameter test conditions min. typ. max. units addsel_l address selection low level 0 0.2 v addsel_h address selection high level 2.5 v dd v i leak leakage current 10 a
STV6412A 12/24 2.7 i2c bus characteristics t amb = 25c, v ccao = 12 v, v cc = 5 v, v cc12 = 12 v, v dd = 5 v r ga = 600 w , r louta = 10k w , r gv = 50 w , r loutv = 150 w , unless otherwise specified. table 12. i2c bus characteristics note 3: the device can also operate at 400 khz and is capable of interfacing with +3.3 v or + 5 v logic levels. figure 5. i 2 c bus timing symbol parameter test conditions min. typ. max. units scl v il low level input voltage -0.3 1.5 v v ih high level input voltage 2.3 5.5 v i li input leakage current v in = 0 to 5.5 v -10 0 10 a sda v il low level input voltage -0.3 1.5 v v ih high level input voltage 2.3 5.5 v i li input leakage current v in = 0 to 5.5 v -10 0 10 a c i input capacitance 10 pf t r input rise time 1.5 v to 3 v 1 s t f input fall time 3 v to 1.5 v 300 ns v ol low level output voltage i ol = 3 ma 0.4 v t f output fall time 3 v to 1.5 v 250 ns c l load capacitance 400 pf timing t low clock low period 4.7 s t high clock high period 4 s t su,dat data setup time 250 ns t hd,dat data hold time 0 340 ns t su,sto setup time from clock high to stop 4 s t buf start setup time following a stop 4.7 s t hd,sta start hold time 4 s t su,sta start setup time following clock low to high transition 4.7 s (start, stop)
STV6412A 13/24 3 i 2 c bus selection data transfers follow the usual i 2 c format; i.e. after the start condition (s), a 7-bit slave address is sent, fol- lowed by an eight-bit data direction bit (w). an 8-bit sub-address is sent to select a register, followed by an 8-bit data word to be included in the register. the ics i 2 c bus decoder enables the automatic incre- mentation mode in write mode. string format write only mode (s = start condition, p = stop condition, a = acknowledge) read only mode slave address auto increment mode 3.1 i 2 c bus addresses write address: 1001 01x0, read address: 1001 01x1 address selection pin grounded: x = 0, write address = 94(hex), read address = 95(hex) address selection pin to supply: x = 1, write address = 96(hex), read address = 97(hex) table 13. input signal summary (write mode) audio video miscellaneous stb-by note 4: unused data must be set to 0. s slave address 0 a sub-address a data a p s slave address 1 a data a p address a6 a5 a4 a3 a2 a1 a0 value 100101x s slave ad- dress 0 a sub-address a data0 a data1 a .... datan a p sub-address sub-address +1 sub-address + n reg addr (hex) data d7 d6 d5 d4 d3 d2 d1 d0 00 tv stereo mono tv 0/6 db tv volume-62 db to 0 db - 2 db steps soft volume mode 01 vcr stereo mono not used vcr audio switch control cinch audio gain tv/cinch audio switch control 02 vcr chroma muted vcr video and chroma switch control tv chroma muted tv video and chroma switch control 03 rgb and fb tri-state rgb gain rgb switch control fast blanking mode/input selection 04 it enable slb mode not used vcr-c output control vcr-c gate control rf trap filter control rf adder control tv r or c output selection 05 vcr slow blanking tv slow blanking enc audio input gain 0/6/9 db vcr r/c sub clamp enc r/c sub clamp 06 rf outputs tv outputs cinch outputs vcr outputs aux inputs tv inputs vcr inputs enc inputs
STV6412A 14/24 table 14. tv audio output table 15. audio selection & vcr audio output reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 00 soft volume change 1x x x x x x x x x x x x x x 0 1 active disabled level adjustment 5x x x x 0 1 0 1 0 1 0 1 0 1 x x 0db -62 db (-2 db/step) 6 db extra gain 1x x 0 1 x x x x x x x x x x x x 0db +6 db tv stereo or mono mode 10 1 x x x x x x x x x x x x x x 0 = stereo 1 = mono reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 01 tv & cinch audio output selection 3x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 muted encoder l/r selected vcr l/r selected aux l/r selected tv l/r selected not allowed not allowed not allowed cinch audio gain 1x x x x x x x x 0 1 x x x x x x 0db follow tv gain vcr audio output selection 2x x x x x x x x 0 0 1 1 0 1 0 1 x x x x x x x x x x x x x x x x muted encoder l/r selected tv l/r selected aux l/r selected vcr stereo or mono mode 10 1 x x x x x x x x x x x x x x 0 = stereo 1 = mono
STV6412A 15/24 table 16. tv & vcr video selection table 17. rgb & fast blanking outputs reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 02 tv video output selection 3x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 y/cvbs muted & chroma muted y/cvbs_enc & r/c_enc y_enc & c_enc y/cvbs_vcr & r/c_vcr cvbs_aux & chroma muted not allowed not allowed not allowed tv chroma output control 1x x x x x x x x 0 1 x x x x x x chroma defined by d2d1d0 chroma force to mute vcr video output selection 3x x x x x x x x 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x y/cvbs muted & chroma muted y/cvbs_enc & r/c_enc y_enc & c_enc cvbs_tv & chroma muted cvbs_aux & chroma muted not allowed not allowed not allowed vcr chroma output control 10 1 x x x x x x x x x x x x x x chroma defined by d6d5d4 chroma force to mute reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 03 fast blanking control 2 x x x x x x x x x x x x x x x x x x x x x x x x 0 0 1 1 0 1 0 1 fb forced to low level fb forced to high level fb from encoder fb from vcr rgb selection 2 x x x x x x x x x x x x x x x x 0 0 1 1 0 1 0 1 x x x x x x x x muted rgb_enc selected rgb_vcr selected not allowed rgb gain 2 x x x x x x x x 0 0 1 1 0 1 0 1 x x x x x x x x x x x x x x x x +6 db gain +5 db gain +4 db gain +3 db gain 1x x 0 1 x x x x x x x x x x x x +0 db extra gain +3 db for weak input signals rgb and fast blanking control 10 1 x x x x x x x x x x x x x x rgb and fb outputs high imped- ance state rgb and fb outputs active
STV6412A 16/24 table 18. rf & miscellaneous control table 19. slow blanking & inputs control reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 04 r/c tv output selection 1 x x x x x x x x x x x x x x 0 1 red signal selected chroma signal selected rf output: adder control and chroma sub-carrier filter selection 2x x x x x x x x x x x x x x x x x x x x x x 0 1 0 1 x x x x x x cvbs to rf output y + c to rf output filter not active filter active c_gate output control 1x x x x x x x x 0 1 x x x x x x high level low level c_vcr output control 1x x x x x x 0 1 x x x x x x x x tri-state mode (high impedance) active slow blanking mode 1x x 0 1 x x x x x x x x x x x x normal mode slb tv is driven by slb vcr it enable 10 1 x x x x x x x x x x x x x x no interrupt flag it enable reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 05 encoder r/csub clamp 1x x x x x x x x x x x x x x 0 1 bottom level clamp average level clamp vcr r/csub clamp 1x x x x x x x x x x x x 0 1 x x bottom level clamp average level clamp encoder input level adjust- ment 2x x x x x x x x x x x x 0 0 1 0 1 0 x x x x x x 0 db for normal audio inputs +6 db for weak audio inputs +9 db for weak audio inputs slow blanking tv scart 2x x x x x x x x 0 0 1 1 0 1 0 1 x x x x x x x x x x x x x x x x input mode only output < 2 v output 16/9 format output 4/3 format slow blanking vcr scart 20 0 1 1 0 1 0 1 x x x x x x x x x x x x x x x x x x x x x x x x input mode only output < 2 v output 16/9 format output 4/3 format
STV6412A 17/24 table 20. standby modes table 21. output signals (read mode) note 5: the interrupt flag will be cleared when this register is read. to prepare for a new interrupt, a 1 must be re-written in the it enable bit (reg. 04, d7). 3.2 power-on reset bus register initial conditions power-on reset is active when the supply v dd is less than 3.5 volts. non-significant bits (x) are pre-set to 0. reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 06 enc inputs 1x x x x x x x x x x x x x x 0 1 inputs active inputs disabled vcr inputs 1x x x x x x x x x x x x 0 1 x x inputs active inputs disabled tv inputs 1x x x x x x x x x x 0 1 x x x x inputs active inputs disabled aux inputs 1x x x x x x x x 0 1 x x x x x x inputs active inputs disabled vcr outputs 1x x x x x x 0 1 x x x x x x x x audio & video outputs on audio & video outputs off cinch outputs 1x x x x 0 1 x x x x x x x x x x audio & video outputs on audio & video outputs off tv outputs 1x x 0 1 x x x x x x x x x x x x audio & video outputs on audio & video outputs off rfmod outputs 10 1 x x x x x x x x x x x x x x audio & video outputs on audio & video outputs off full stop 1 1 1 1 1 1 1 1 only i 2 c bus and slow blanking detection parts are supplied. reg. addr (hex) description bits data comments d7 d6 d5 d4 d3 d2 d1 d0 slow blanking tv scart 2x x x x x x x x x x x x x x x x x x 0 1 1 1 0 1 input <2 v input 16/9 format input 4/3 format slow blanking vcr scart 2x x x x x x x x x x x x 0 1 1 1 0 1 x x x x x x input <2 v input 16/9 format input 4/3 format interrupt flag 1x x x x x x 0 1 x x x x x x x x no change since read one change has been detected (refer to note 5 ) reg. addr (hex) data comments d7 d6 d5 d4 d3 d2 d1 d0 00 00000000 audio tv and cinch outputs are in stereo mode, 0 db gain adjustment. 01 00000000 tv, cinch and vcr audio outputs are muted. vcr output is in stereo mode. 02 00000000vcr, tv and r fmod video outputs are muted. 03 00000000 fast blanking is forced to 0. rgb outputs are muted and in high imped- ance. 04 00000000c_g ate is high. c_vcr is high impedance.
STV6412A 18/24 figure 6. volume control characteristics 05 00000000 encoder and vcr r/csub bottom level clamp, rgb outputs 6 db gain, and slow blanking parts are in read mode. 06 00000000 all internal blocks are on. reg. addr (hex) data comments d7 d6 d5 d4 d3 d2 d1 d0 step number 0 -36 -62 db 18 31 0.5 db + 2 db - 0.5 db 0.5 db
STV6412A 19/24 4 input/output groups figure 7. bottom clamped video inputs (pins 2, 4, 6, 12, 14, 18, 21, 62, 64) figure 8. r/c clamped video inputs (pins 10, 60) figure 9. fast blanking inputs (pins 50, 51) figure 10. average clamped video inputs (pin8) figure 11. cgate logical output (pin 52) figure 12. fast blanking output (pin 49) v cc 5v v cc 5v 2v + v d protected pad 15 k w tri r/c inputs may be configured either as a bottom clamped input or as an average clamped input. in either case, the simplified input schematic is very close to one of the graphics shown above. v ccb1 5v protected pad tri protected pad vcc 5 v i b vcc 5 v tri 25 k w 25 k w 3v protected pad v ccb1 5v v dd 5v 18 k w 50 ohms protected pad v ccb1 5v v ccb1 5v
STV6412A 20/24 figure 13. video outputs (pins 38, 40, 42, 44, 46, 48) figure 14. audio inputs (pins 7, 9 11, 13, 19, 20, 22, 23) figure 15. slow blanking i/o (pins 59, 61) figure 16. trap filter (pin 34) figure 17. audio outputs (pins 27, 28, 29, 30, 32, 33,35) figure 18. interrupt output (pin 58) protected pad v cc 5v ib v ccb1,2 ...7 5v v cca 9v protected pad 50 k w v cc /2 i b protected pad v cc12 12 v 110 k w 55 k w 25 k w 1k w v cc 12 v protected pad v ccb5 5v 100 w 1k w v cc 5v protected pad v ccao i2 v 60 w float v dd 5v protected pad 40 w
STV6412A 21/24 figure 19. i 2 c bus (sda) (pin 56) figure 20. i 2 c bus (add) (pin 54) figure 21 . i2c bus (scl) (pin 55) figure 22. power supply connection protected pad protected pad acknowledge 10 k w float v dd 5v protected pad 10 k w float v dd 5v protected pad 10 k w float v dd 5v 41 gndp 47 v cc b1 v cc b2 v cc b3 v cc b4 v cc b5 v cc a0 v cc a v cc 10 v 12 v gnda gndref gndv v cc 12 12 v gdd 53 5v v dd 45 43 37 31 63 1 24 25 17 5 57 39 these symbols represent some huge diode and zener-like components used for esd protection of the device. they are not supposed to be paths for any current in normal operation mode. float
STV6412A 22/24 5 application diagram for more details refer to stv6412 application note. modulator 4.43mhztrap STV6412A
STV6412A 23/24 6 package mechanical data figure 23 . 64 pins thin full plastic quad flat pack (tqfp) dimensions millimeters inches min. typ. max. min. typ. max. a 1.60 0.063 a1 0.05 0.15 0.002 0.006 a2 1.35 1.40 1.45 0.053 0.055 0.057 b 0.30 0.37 0.45 0.0118 0.0146 0.0177 c 0.09 0.20 0.0035 0.0079 d 16.00 0.630 d1 14.00 0.551 d3 12.00 0.472 e 0.80 0.0315 e 16.00 0.630 e1 14.00 1 0.551 e3 12.00 0.472 l 0.45 0.60 0.75 0.018 0.024 0.030 l1 1.00 0.039 k 0 (min.), 7 (max.) 64 49 d3 17 32 1 16 e c b a1 a2 a d1 d 33 48 e3 e1 e l k l1 0,25 mm .010 inch gage plane 0,10 mm .004 inch seating plane
STV6412A 24/24 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without the express written approval of stmicroele ctronics. the st logo is a registered trademark of stmicroelectronics ? 2003 stmicroelectronics - all rights reserved. purchase of i 2 c components by stmicroelectronics conveys a license under the philips i 2 c patent. rights to use these components in an i 2 c system is granted provided that the system conforms to the i 2 c standard specification as defined by philips. stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. http://www.st.com

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