View AK4563A_1360049.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

asahi kasei [AK4563A] ms0067-e-02 2004/12 - 1 - general description the AK4563A is low power operatio n, 16bit codec that include 4ch adc and 2ch dac. the AK4563A also includes alc (automatic level control) circuit, therefore is suitable for microphone application and etc. as the alc circuit can be stopped by controlling p, ipga can also be used as the manual volume. digital i/f can be input/output from 1.5v to 3.0v by external power supply. the AK4563A can be powered-down by each block, therefore the AK4563A is suitable to low power dissipation in system. features 1. resolution : 16bits 2. recording functions ? 4ch analog input pga (programmable gain amplifier) ? digital alc (automatic level control) circuit ? fadein / fadeout ? digital hpf for dc-offset cancellation (fc=3.7hz@fs=48khz) ? peak-meter output (2ch) 3. playback function ? digital de-emphasis filter (tc = 50/15 s, fs=32k, 44.1k and 48khz) 4. power management 5. codec (adc: 4ch, dac: 2ch) ? single-ended inputs/outputs ? input / output level: 1.5vpp@vref=2.5v (= 0.6 x vref) ? s/(n+d): 83db(adc), 86db(dac) @vref=2.5v ? dr, s/n: 87db(adc), 91db(dac) @vref=2.5v 6. master clock: 256fs/384fs 7. sampling rate: 8khz 50khz 8. audio data interface format: msb-firs t, 2?s compliment (ak4516a compatible) ? adc: 16bit msb justified, 16bit lsb justified, i 2 s ? dac: 16bit msb justified, 16bit lsb justified, i 2 s 9. power supply ? codec, pga: 2.3 3.0v (typ.2.5v) ? digital i/f: 1.5 3.0v(typ.2.5v) 10. power supply current ? all power on: 18ma ? (alc + adc) x 4ch: 13.5ma ? dac: 5.5ma 11. ta = -20 85 o c 12. package: 28pin vsop low power 16bit 4ch a dc & 2ch dac with alc ak4563 a
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 2 - intl0 vcom lout vref va a gnd csn cclk cdti mclk sdto1 sdto0 bclk lrck dgnd vt vd a dc0 dac hpf de-emp a udio i/f controller control register i/f clock divider pdn sdti cdto extl lin intr0 extr rin intl1 a dc1 hpf intr1 rout ipga0 ipga1 figure 1. AK4563A block diagram
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 3 - ? ordering guide AK4563Avf -20 +85 c 28pin vsop (0.65mm pitch) akd4563a evaluation board for AK4563A ? pin layout extl lout rout intl1 intr1 intl0 intr0 extr lin rin vcom agnd va vref vd dgnd vt sdto0 lrck mclk bclk cdto cdti csn cclk pdn sdto1 sdti 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 AK4563A top view
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 4 - pin / function no. pin name i/o function 1 lout o lch analog output pin 2 rout o rch analog output pin 3 intl1 i lch int #1 input pin 4 intr1 i rch int #1 input pin 5 intl0 i lch int #0 input pin 6 intr0 i rch int #0 input pin 7 extl i lch ext input pin 8 extr i rch ext input pin 9 lin i lch line input pin 10 rin i rch line input pin 11 vcom o common voltage output pin, 0.45 x va bias voltage of adc inputs and dac outputs 12 agnd - analog ground pin 13 va - analog power supply pin, +2.3 3.0v 14 vref i adc & dac voltage reference input pin, va used as a voltage reference of adc & dac. vref is connected externally to fltered va. 15 vd - digital power supply pin, +2.3 3.0v 16 dgnd - digital ground pin 17 vt - digital i/f power supply pin, +1.5 3.0v 18 sdto0 o audio serial data #0 output pin 19 sdto1 o audio serial data #1 output pin 20 sdti i audio serial data input pin 21 lrck i input/output channel clock pin 22 mclk i master clock input pin 23 bclk i audio serial data clock pin 24 cdto o control data output pin 25 cdti i control data input pin 26 csn i chip select pin 27 cclk i control data clock pin 28 pdn i power down & reset pin, ?l?: power down & reset, ?h?: normal operation note: all digital input pins should not be left floating.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 5 - absoluate maximum rating (agnd, dgnd=0v; note 1) parameter symbol min max units power supply analog (va pin) digital 1 (vd pin) digital 2 (vt pin) | dgnd ? agnd | (note 2) va vd vt ? gnd -0.3 -0.3 -0.3 - 4.6 4.6 4.6 0.3 v v v v input current, any pin except supplies iin - 10 ma analog input voltage intl1-0, intr1-0, extl, extr, lin, rin, vref vina -0.3 va+0.3 v digital input voltage vind -0.3 vt+0.3 v ambient temperature ta -20 85 c storage temperature tstg -65 150 c note 1. all voltages with respect to ground. note 2. agnd and dgnd should be the same voltage. warning: operation at or beyond these limits may result in permanent damage to the device. normal operation is not guaranteed at these extremes. recommended operating conditions (agnd, dgnd=0v; note 1) parameter symbol min typ max units power supply analog (va pin) digital 1 (vd pin) (note 3) digital 2 (vt pin) va vd vt 2.3 2.3 or va-0.3 1.5 2.5 2.5 2.5 3.0 va vd v v v reference voltage analog reference voltage (vref pin) (note 4) vref - - va v note 1. all voltages with respect to ground. note 3. minimum value is the high value either 2.3v or va-0.3v. note 4. vref and va should be same voltage. * akm assumes no responsibility for the usag e beyond the conditions in this datasheet.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 6 - analog characteristics (ta=25 c; va, vd, vt=2.5v; fs=48khz; signal frequency =1khz; measurement frequency = 10hz 20khz; s/(n+d), d-range and s/n are value against full-scale; unless otherwise specified) parameter min typ max units input pga characte ristics (ipga): input voltage (intl1-0, intr1-0, extl, extr , lin, rin pins) (note 5) 1.35 1.5 1.65 vpp input resistance: mic (intl1-0,intr1-0,extl,extr pins) line (lin, rin pins) 6.5 80 10 125 14.5 176 k ? mic line step size (note 6) +28db -8db -8db -16db -16db -32db -32db -40db -40db -52db +6db -30db -30db -38db -38db -54db -54db -62db -62db -74db 0.1 0.1 0.1 - - 0.5 1 2 2 4 0.9 1.9 3.9 - - db db db db db adc analog input characteristics: (note 7) resolution 16 bits s/(n+d) (-2dbfs input) 74 83 db d-range (eiaj) 81 87 db s/n (eiaj) 81 87 db interchannel isolation 85 100 db interchannel gain mismatch 0.2 0.5 db dac analog output characteristics: measured by lout/rout resolution 16 bits s/(n+d) (0dbfs input) 77 86 db d-range (eiaj) 85 91 db s/n (eiaj) 85 91 db interchannel isolation 85 100 db interchannel gain mismatch 0.2 0.5 db output voltage (note 8) 1.35 1.5 1.65 vpp load resistance 10 k ? load capacitance 20 pf power supplies power supply current: va+vd+vt normal operation (pdn= ?h?) all power on (pm4-0= ?1?) ipga0+adc0+ipga1+adc1 (pm3-0= ?1?) dac (pm4= ?1?) power-down mode (pdn= ?l?) (note 9) - - 18 13.5 5.5 10 27 - - 100 ma ma ma a note 5. full-scale voltage of analog inputs when ipga0 and ipga1 bits are ?0? and are set to 0db. its voltage is proportional to vref. vin = 0.6 x vref. note 6. ipga1 does not have a gain table of line side. note 7. adc0 is input from intl0/intr0 or extl/extr or lin/rin and it measures included in ipga0. the gain of ipga0 is set 0db. adc1 is input from intl1/intr1 and it measures included in ipga1. the gain of ipga1 is set 0db. dc-offset in ?ipga0+adc0? and ?ipga1+adc1? are cancelled by internal hpf. note 8. analog output voltage is proportional to vref. vout = 0.6 x vref. note 9. all digital input pins except for pdn pin are held vt or dgnd, and pdn pin is held dgnd.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 7 - filter charcteristics (ta=25 c; va, vd=2.3 3.0v; vt=1.5 3.0v; fs=48khz; de-emphasis = off) parameter symbol min typ max units adc digital filter (decimation lpf) : passband (note 10) 0.1db -1.0db -3.0db pb 0 - - 21.8 23.0 18.9 - - khz khz khz stopband (note 10) sb 29.4 khz passband ripple pr 0.1 db stopband attenuation sa 65 db group delay (note 11) gd - 17.0 - 1/fs group delay distortion ? gd 0 s adc digital filter (hpf) : frequency response (note 10) -3.0db -0.56db -0.15db fr - - - 3.7 10 20 - - - hz hz hz dac digital filter : passband (note 10) 0.1db -6.0db pb 0 - 24.0 21.7 - khz khz stopband (note 10) sb 26.2 khz passband ripple pr 0.06 db stopband attenuation sa 43 db group delay (note 11) gd - 14.8 - 1/fs group delay distortion ? gd 0 s dac digital filter + analog filter : frequency response: 0 20.0khz fr 0.5 db note 10. the passband and stopband frequencies scale with fs. for example, adc: pb=0.454 x fs(@-1.0db), dac: pb=0.454 x fs(@-0.1db). note 11. the calculating delay time which occurred by digital filtering. the time is from the input of analog signal to setting the 16bit data of both channels to the output register for adc. for dac, this time is from setting the 16bit data of both channels on input register to the output of analog signal. dc characteristics (ta=25 c; va, vd=2.3 3.0v, vt=1.5 3.0v) parameter symbol min typ max units input high level voltage input low level voltage vih vil 80 % vt - - - - 20 % vt v v output high level voltage: iout=-400 a output low level voltage: iout=400 a voh vol vt-0.4 - - - - 0.4 v v input leakage current iin - - 10 a
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 8 - switching charasteristics (ta=25 c; va, vd=2.3 3.0v, vt=1.5 3.0v; c l =20pf) parameter symbol min typ max units control clock frequency master clock(mclk) 256fs: frequency pulse width low pulse width high 384fs: frequency pulse width low pulse width high channel selection clock (lrck) frequency duty fclk tclkl tclkh fclk tclkl tclkh fs 2.048 28 28 3.072 23 23 8 45 12.288 18.432 48 50 12.8 19.2 50 55 mhz ns ns mhz ns ns khz % audio interface timing bclk period bclk pulse width low pulse width high bclk ? ? to lrck lrck to sdto(msb) (except iis mode) bclk ? ? to sdto sdti hold time sdti setup time tblk tblkl tblkh tblr tdlr tdss tsdh tsds 312.5 130 130 -tblkh+50 50 50 tblkl-50 80 80 ns ns ns ns ns ns ns ns control interface timing cclk period cclk pulse width low pulse width high 1 pulse width high 2 cdti setup time cdti hold time csn ?h? time csn ? ? to cclk ? ? cclk ? ? to csn ? ? cdto output delay time csn ? ? to cdto(hi-z)(note 13) tcck tcckl tcckh tckh2 tcds tcdh tcsw tcss tcsh tdcd tccz 200(note 12) 80 80 80 50 50 150(note 12) 50(note 12) 50 70 70 ns ns ns ns ns ns ns ns ns ns ns reset/calibration timing pdn pulse width pdn ? ? to sdto0/sdto1 valid tpdw tpdv 150 4128 ns 1/fs note 12. fs 22.4khz. in the case of fs < 22.4khz, these three parameters must meet a relationship of (tcsw + tcss + 6 tcck) > 1/(32 fs) in addition to these specifications. for example, when tcck=200ns and tcss=50ns at fs=8khz, tcsw(min) is 2657ns. when tcsw=150ns and tcss=50ns fs=8khz, tcck(min) is 618ns. when 08h or 09h address is read and fs < 39.1kh z, tcck must meet a relationship tcck > 1/(128 fs) in addition to these specifications. for example, when fs=8khz, tcck(min) is 977ns. note 13. r l =1k ? /10% change (pulled-up operates for vt.)
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 9 - ? timing diagram lrck bclk sdto0,1 sdti tdlr tdss tblkl tblkh tsdh tsds lsb d15 (msb) tblr 50%vt 50%vt 50%vt 50%vt figure 2. audio data input/output timing (audio i/f format: no.0) tcss csn cclk 50%vt 50%vt tcckl tcckh tcdh cdto hi-z 50%vt cdti op0 op1 op2 a0 tcds figure 3. write/read command input timing csn 50%vt cclk 50%vt 50%vt cdti d4 d5 d6 d7 tcsw tcsh cdto hi-z figure 4. write data input timing
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 10 - csn 50%vt 50%vt cclk cdti 50%vt a3 a4 tckh2 cdto 50%vt d0 d1 d2 hi-z tdcd figure 5. read data output timing 1 csn 50%vt cclk 50%vt 50%vt cdti tcsw tcsh 50%vt cdto d4 d5 d6 d7 tccz figure 6. read data input timing 2 50%vt pdn tpdw tpdv sdto0,1 50%vt figure 7. reset timing
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 11 - operation overview ? system clock input the clocks which are required to operate are mclk (256fs/384fs), lrck (fs) and bclk (32fs ). the master clock (mclk) should be synchronized with lrck but the phase is free of care. the mclk can be input 256fs or 384fs. when 384fs is input, the internal master clock is divided into 2/3 automatically. *fs is sampling frequency. all external clocks (mclk, bclk and lrck) should always be present whenever adc or dac is in operation. if these clocks are not provided, the AK4563A may draw excess current and it is not possible to operate properly because utilizes dynamic refreshed logic internally. if the external clocks are not present, the AK4563A should be in the power-down mode. ? system reset AK4563A should be reset once by bringing pdn pin ?l? upon power-up. after the system reset operation, the all internal AK4563A registers are initial value. the initial cycle is 4128/fs=86m s@fs=48khz. during offset cali bration, the adc di gital data outputs of both channels are forced to a 2?s compliment ?0?. output data of settles da ta equivalent for analog input signal after offset calibration. this cycle is not for dac. as a normal offset calibration may not be executed, not hing write at address 01h during offset calibration.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 12 - the clocks may be stopped. 4128/fs pdn pin power supply a dc internal state control register write to register dac internal state external clocks a in sdto0,1 sdti a out pd pdn pin may be ?l? at power-up. init normal gd gd gd (1) ?0?data (3) ?0?data pd (2) pm normal (1) idle noise normal pm normal ?0?data gd (1) gd (1) (4) (4) init-1 init-2 normal normal inhibit-1 inhibit-2 normal (5) 4128/fs init gd (1) init-2 read from register inhibit-1 normal figure 8. power-up/power-down timing example ? init: initializing. at this time, stat bit is ?0?. when this flag becomes ?1?, init process has completed. ipga0 and ipga1 are mute state. ? pd: power-down state. adc is output ?0?, analog output of dac goes floating. ? pm: power-down state by operating power management bit ? init-1: initializing all registers. ? init-2: initializing read only registers in control registers. ? inhibit-1: inhibits writing and reading to all control registers. ? inhibit-2: inhibits writing to all control registers. note: please refer to ?explanation of register? about the condition of each register. (1) digital output corresponding to analog input and analog output corresponding to digital input have the group delay (gd). (2) if the analog signal does not be input, the digital outputs have the op-amp of input and some noise in adc. (3) adc data is ?0? data at power-down. (4) a few noise occurs at the ? ? of pdn signal. please mute the analog output externally if the noise influences the system application. (5) when the external clocks are stopped, the AK4563A should be in the power-down mode (pdn pin = ?l? or pm5-0 bit = ?0?) .
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 13 - ? digital high pass filter (hpf) the adc has hpf for the dc offset cancel. the cut-off freque ncy of hpf is 3.7hz (@fs=48khz) and it is -0.15db at 20hz. it also scales with the sampling frequency (fs). ? audio serial interface format data is shifted in/out the sdti/sdto0, 1 pins using bclk and lrck inputs. four serial data are selected by the dif0 and dif1 pins as shown in table 1. in all modes, the serial da ta is msb-first, 2's compliment format and it is latched by ? ? of bclk. when dif1= ?0? and dif0=?1?, only bclk=64fs is acceptable. no. dif1 bit dif0 bit sdto0/sdto1(adc) sdti(dac) bclk figure 0 0 0 msb justified lsb justified 32fs figure 9 reset 1 0 1 lsb justified lsb justified = 64fs figure 10 2 1 0 msb justified msb justified 32fs figure 11 3 1 1 i 2 s compatible i 2 s compatible 32fs figure 12 table 1. audio data format lrck bclk ( 32fs ) sdto(o) sdti ( i ) 012 8910 1213 15012 8910 1213 150 15 1 14 4 876 0 32 11 14 1 5 15 14 4 876 0 321 5 14 11 15 13 bclk ( 64fs ) sdto0,1 ( o ) 0 1 2 3 14 15 17 18 31 0 1 2 14 15 17 18 31 0 15 1 14 0 15 14 1 2 1 15 sdti ( i ) 10 15 14 10 15 14 15:msb, 0:lsb lch data rch data don?t care 21 13 don?t care 16 0 16 3 13 3 13 13 3 figure 9. audio data timing (no.0) lrck bclk(64fs) sdto0,1(o) 0 1 2 15 16 17 19 20 31 0 1 2 15 16 17 19 20 31 0 1 13 15 15 19 sdti(i) 1 15 0 13 12 1 15 0 13 12 15:msb, 0:lsb lch data rch data don?t care don?t care 15 15 12 4 14 14 0 1 18 14 0 12 14 13 1 18 figure 10. audio data timing (no.1)
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 14 - lrck bclk ( 32fs ) sdto0,1(o) sdti ( i ) 0 1 2 8 9 10 12 13 15 0 1 2 8 9 10 12 13 15 0 15 1 14 4 876 0 32 11 14 1 5 15 14 4 876 0 321 5 14 11 15 13 bclk(64fs) sdto0,1 ( o ) 0 1 2 3 14 15 17 18 31 0 1 2 14 14 15 17 18 31 0 15 1 14 0 15 14 14 2 1 15 sdti(i) 15:msb, 0:lsb lch data rch data don?t care 21 13 don?t care 16 0 16 3 13 13 15 14 21 13 0 15 14 14 2 1 0 13 15 figure 11. audio data timing (no.2) lrck bclk ( 32fs ) sdto0,1(o) sdti ( i ) 0 1 2 4 9 10 12 13 15 0 1 2 4 9 10 12 13 15 0 0 1 15 5 13 7 7 1 43 11 14 2 6 0 15 5 13 7 7 1 432 6 14 11 0 13 bclk(64fs) sdto0,1 ( o ) 0 1 2 3 14 15 17 18 31 0 1 2 44 14 15 17 18 31 0 1 15 0 15 13 2 1 sdti(i) 15:msb, 0:lsb lch data rch data don?t care 21 14 don?t care 16 0 16 3 14 13 15 21 14 0 15 13 2 1 0 14 14 3 2 2 14 3 4 figure 12. audio data timing (no.3)
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 15 - ? control register r/w timing the data on the 4 wires serial interface consists of op-code (3bit), address (lsb-first, 5bit) and control data (lsb-first, 8bit). the transmitting data is output to each bit by ? ? of cclk, the receiving data is latched by ? ? of cclk. writing data becomes effective by ? ? of csn. reading data becomes hi-z (floating) by ? ? of csn. csn should be held to ?h? at no access. in case of connecting between cdti and cdto, the i/f can be also contolled by 3-wires. cclk always needs 16 edges of ? ? during csn = ?l?. reading/writing of the address except 00h 09h are inhibited. reading/writing of the control registers by except op0 = op1 = ?1? are invalid. write read hi-z hi-z csn cclk 01 2 345 67891011 12 13 14 15 cdti cdto hi-z cdti cdto op1 op0 op0 op1 op2 a 2 a 2 a 1 a 1 a 3 a 3 a 4 a 4 a 0 a 0 d0 d0 d1 d1 d2 d2 d3 d3 d4 d4 d5 d5 d6 d6 d7 d7 op2 op0-op2: op code (110:read, 111:write) a 0-a4: register address d0-d7: control data ?1? ?0? ?1? ?1? ?1? ?1? figure 13. control data timing
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 16 - ? register map addr register name d7 d6 d5 d4 d3 d2 d1 d0 00h input select 0 0 0 0 line ext int1 int0 01h power management 0 0 pm5 pm4 pm3 pm2 pm1 pm0 02h mode control 0 0 0 fs dif1 dif0 dem1 dem0 03h timer select fdtm1 fdtm0 ztm1 ztm0 wtm1 wtm0 ltm1 ltm0 04h alc mode control 1 0 0 lmat1 lmat0 fdatt ratt1 ratt0 lmth 05h alc mode control 2 0 ref6 ref5 ref4 ref3 ref2 ref1 ref0 06h operation mode 0 0 zelmn fr stat fdin fdout alc 07h input pga control 0 ipga6 ipga5 ipga4 ipga3 ipga2 ipga1 ipga0 08h peak hold lch phl7 phl6 phl5 phl4 phl3 phl2 phl1 phl0 09h peak hold rch phr7 phr6 phr5 phr4 phr3 phr2 phr1 phr0 ? register definitions the following condition can not read and write all registers. * pdn pin = ?l? addr register name d7 d6 d5 d4 d3 d2 d1 d0 00h input select 0 0 0 0 line ext int1 int0 r/w r/w reset 0 0 0 0 0 0 1 1 int0: select on/off of intl0 and intr0 (0: off, 1: on) int1: select on/off of intl1 and intr1 (0: off, 1: on) ext: select on/off of extl and extr (0: off, 1: on) line: select on/off of lin and rin (0:off, 1:on) when line bit is ?1?, int0, int1 and ext bits are ignored. gain tables of ipga0 and ipga1 are changed by line bit. when line bit is ?1?, gain table of ipga becomes line side. but ipga1 becomes mute state because it does not have a line table. when int0 and ext bits change into ?1? at the same time, input signals are mixed by gain 0db.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 17 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 01h power management 0 0 pm5 pm4 pm3 pm2 pm1 pm0 r/w r/w reset 0 0 0 1 1 1 1 1 pm5-0: power management (0: power down, 1: power up) pm1-0: ipga and alc circuit power control. after exiting pm1-0 = ?00?, ipga goes reset value. (refer to ?operation of ipga? description) pm1 pm0 ipga1 ipga0 0 0 off off 0 1 off on 1 0 lch on on 1 1 on on reset table 2. ipga and alc circuit power control pm3-2: power control of adc pm3 pm2 adc1 adc0 0 0 off off 0 1 off on 1 0 lch on on 1 1 on on reset table 3. adc power control when the number of adc channels is changed, pm3-2 bits should be via ?00? (adc0 and adc1 are powerd-down.). for example, in case of changing from 2ch mode (pm3-2 bits = ?01?) to 4ch mode (pm3-2 bit = ?11?), pm3-2 bit should change into ?11? via ?00?. 2ch mode (pm3-2 = ?01?) 3ch mode (pm3-2 = ?10?) all power-down (pm3-2 = ?00?) 4ch mode (pm3-2 = ?11?) figure 14. adc power-up/down sequence by power management bit in case of exiting all power-down mode (pm3-2 = ?00?), the initializing cycle (4128/fs) is started. then all outputs of adc become ?0?. in case of 3ch mode (pm1-0 = ?10?, pm3-2 = ?10?), right channel of ipga1 and adc1 is powered-down. then right channel of adc1 is output ?0?.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 18 - pm4: power control of dac pm5: used both as power control of analog loopback circuit and as selection of mux. (0: dac, 1: analog loopback) when pm5 goes ?1?, input for output-amp is selected to analog loopback circuit from dac output. output mux and amp are powered-down when pdn = ?l? or pm4 = pm5 = ?0?. the loopback output and the mux selecting dac output is a mixer with the switch in practice. therefore, when both pm4 and pm5 select on, the analog loopback signal and dac output are mixed by gain 1. pm5-0 bits can be partially powered-down by on/off (?1?/ ?0?) of pm5-0 bits. when pdn pin goes ?l?, all the circuit in AK4563A can be powered-down regardless of pm5-0 bits. when the AK4563A is powered-down by pm5-0 bits, contents of registers are kept. however ipga gain is reset when pm1-0 bits are ?00?. (refer to ?operation of ipga? description) vcom circuit is powered-down when pm bit is all ?0?. mclk, bclk and lrck should not stopped except the case of pm0 = pm1 = pm2 = pm3 = pm4 = pm5 = ?0? or pdn= ?l?.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 19 - ipga0 a lc a dc0 dac mux a mp pm4 ipga1 a lc a dc1 pm1-0 pm3-2 1) all power pm0: 1 pm1: 1 pm2: 1 pm3: 1 pm4: 1 pm5: 0 ipga0 a lc a dc0 pm1-0 pm3-2 2) 2ch rec mode pm0: 1 pm1: 0 pm2: 1 pm3: 0 pm4: 0 pm5: 0 ipga0 a lc a dc0 mux a mp pm5 pm1-0 pm3-2 3) 2ch rec monitor pm0: 1 pm1: 0 pm2: 1 pm3: 0 pm4: 0 pm5: 1 ipga0 a lc a dc0 ipga1 a lc a dc1 pm1-0 pm3-2 4) 3ch rec mode pm0: 0 pm1: 1 pm2: 0 pm3: 1 pm4: 0 pm5: 0 ipga0 a lc a dc0 ipga1 a lc a dc1 pm1-0 pm3-2 5) 4ch rec mode pm0: 1 pm1: 1 pm2: 1 pm3: 1 pm4: 0 pm5: 0 lch lch dac mux a mp pm4 6) play pm0: 0 pm1: 0 pm2: 0 pm3: 0 pm4: 1 pm5: 0 ipga0 a lc mux a mp pm5 pm1-0 7) analog-through mode pm0: 1 pm1: 0 pm2: 0 pm3: 0 pm4: 0 pm5: 1 organization of power management bit ipga0 a lc a dc0 dac mux a mp pm5 pm4 ipga1 a lc a dc1 pm1-0 pm3-2 figure 15. power management
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 20 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 02h mode control 0 0 0 fs dif1 dif0 dem1 dem0 r/w r/w reset 0 0 0 1 0 0 0 1 dem1-0: select de-emphasis frequency the AK4563A includes th e digital de-e mphasis filter (tc = 50/15 s) by iir filter. the filter corresponds to three sampling frequencies (32khz, 44,1khz and 48khz). the de-emphasis filter selected by dem0 and dem0 bits are enabled for input audio data. dem1 dem0 mode 0 0 44.1khz 0 1 off reset 1 0 48khz 1 1 32khz table 4. select de-emphasis frequency dif1-0: select audio serial interface format (ak4516a compatible) no. dif1 dif0 sdto0/sdto1(adc) sdti(dac) bclk figure 0 0 0 msb justified lsb justified 32fs figure 9 reset 1 0 1 lsb justified lsb justified =64fs figure 10 2 1 0 msb justified msb justified 32fs figure 11 3 1 1 i 2 s compatible i 2 s compatible 32fs figure 12 table 5. select audio serial interface format fs: select sampling frequency 0:fs=32khz 1:fs=48khz (reset) fs bit can set limiter period (ltm1-0 bit), recovery period (wtm1-0 bit), zero crossing timeout (ztm1-0 bit) and fadein/fadeout period (fdtm1-0 bit) the same period at fs=32khz and 48khz.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 21 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 03h timer select fdtm1 fdtm0 ztm1 ztm0 wtm1 wtm0 ltm1 ltm0 r/w r/w reset 0 0 0 0 0 0 0 1 ltm1-0: alc limiter period the ipga value is changed immediately. when the ipga value is changed continuously, the change is done by the period specified by ltm1-0 bit. these periods are value at fs=32khz (fs bit = ?0?) or fs=48khz (fs bit = ?1?). ltm1 ltm0 period 0 0 63 s 0 1 125 s reset 1 0 250 s 1 1 500 s table 6. alc limiter operation period wtm1-0: alc recovery waiting period a period of recovery operation when any li miter operation does not during alc operation. recovery operation is done at period set by wtm1-0 bits. when the input signal level exceeds auto recovery waiting counter reset level set by lmth bit, the auto recovery waiting counter is reset. the waiting timer starts when th e input signal leve l becomes below the auto recovery waiting counter reset level. these periods are value at fs=32khz (fs bit = ?0?) or fs=48khz (fs bit = ?1?). wtm1 wtm0 period 0 0 8ms reset 0 1 16ms 1 0 64ms 1 1 512ms table 7. alc recovery operation waiting period ztm1-0: zero crossing timeout at writing operation by p and alc recovery operation when ipga of each l/r channels do zero crossing or timeout independently, the ipga value is changed by p write operation or alc recovery operation. these periods are value at fs=32khz (fs bit = ?0?) or fs=48khz (fs bit = ?1?). ztm1 ztm0 period 0 0 8ms reset 0 1 16ms 1 0 64ms 1 1 512ms table 8. zero crossing timeout
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 22 - fdtm1-0: fadein/out period setting the fadein/out operation is done by a period set by fdtm1-0 bits when fdin or fdout bits are set ?1?. when ipga of each l/r channel do zero cr ossing or timeout independently, the ipga value is changed. these period are value at fs=32khz (fs bit = ?0?) or fs=48khz (fs bit = ?1?). fdtm1 fdtm0 period 0 0 24ms reset 0 1 32ms 1 0 48ms 1 1 64ms table 9. fadein/out period
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 23 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 04h alc mode control 1 0 0 lmat1 lmat0 fdatt ratt1 ratt0 lmth r/w r/w reset 0 0 0 0 0 0 0 0 lmth: auto limiter detection level / auto recovery waiting counter reset level lmth alc limiter detection level alc recovery waiting counter reset level 0 adc input ?4.0db -4.0db > adc input -6.0db reset 1 adc input ?2.0db -2.0db > adc input -4.0db table 10. auto limiter detection level / auto recovery waiting counter reset level ratt1-0: alc recovery gain step during the alc recovery operation, the number of steps changed from current ipga value is set. for example, when the current ipga value is 30h, ratt1= ?0?, ratt0= ?1? are set, ipga changes to 32h by the auto limiter operation, the input signal level is gained by 1db (=0.5db x 2). when the ipga value exceeds the reference level (ref6-0), the ipga value does not increase. ratt1 ratt0 gain step 0 0 1 reset 0 1 2 1 0 3 1 1 4 table 11. alc recovery gain step fdatt: fadein/out att step during the fadein/out operation, the number of steps changed from current ipga value is set. for example, when the current ipga value is 30h, f datt = ?1? are set, ipga changes to 32h (fadein) or 2eh (fadeout) by the fadein/out operation, the input signal level is gained by 1db(=0.5db x 2). when the ipga value exceeds the reference level (ref6-0) or 00h, the ipga value does not increase. fdatt att step 0 1 reset 1 2 table 12. fadein/out att step lmat1-0: alc limiter att step during the alc limiter operation, when input signal exceeds the alc limiter detection level set by lmth, the number of steps attenuated from current ipga value is set. for example, when the current ipga value is 68h in the state of lmat1-0 = ?11?, it becomes ipga=64h by the alc limiter operation, the input signal level is attenuated by 2db (=0.5db x 4). the alc limiter period is set by ltm1-0 bits at zelmn = ?1? and ztm1-0 b its at zelmn = ?0?. when the attenuation value exceeds ipga = ?00h? (mute), it clips to ?00?. lmat1 lmat0 att step 0 0 1 reset 0 1 2 1 0 3 1 1 4 table 13. alc limiter att step
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 24 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 05h alc mode control 2 0 ref6 ref5 ref4 ref3 ref2 ref1 ref0 r/w r/w reset 0 28h ref6-0: set the reference value at alc recovery operation during the alc recovery operation, when ipga value becomes the reference value set by ref6-0, the gain of the alc recovery operation exceeds the reference value. the reference value is set commonly as for lch and rch of ipga0 and ipga1. during the alc recovery operation, if ipga value exceeds the setting reference value by gain operation, ipga does not become the larger than the reference value. for example, when ref6-0 = 30h, ratt = 2 step and ipga = 2fh, ipga will become 2fh + 2 step = 31h by the alc recovery operation, but ipga value becomes 30h as ref value is 30h. ipga should be certainly set to the same value or smaller than ref value before entering alc mode (including the fadein/out operation). gain(db) data mic line step level 60h +28.0 +6.0 5fh +27.5 +5.5 5eh +27.0 +5.0 ? ? ? 28h +0.0 -22.0 27h -0.5 -22.5 ? ? ? 19h -7.5 -29.5 18h -8.0 -30.0 0.5db 73 17h -9.0 -31.0 16h -10.0 -32.0 ? ? ? 11h -15.0 -37.0 10h -16.0 -38.0 1db 8 0fh -18.0 -40.0 0eh -20.0 -42.0 ? ? ? 05h -38.0 -60.0 04h -40.0 -62.0 2db 12 03h -44.0 -66.0 02h -48.0 -70.0 01h -52.0 -74.0 4db 3 00h mute mute 1 table 14. setting reference value at alc recovery operation
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 25 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 06h operation mode 0 0 zelm n fr stat fdin fdout alc r/w r/w rd r/w reset 0 0 0 0 0 0 0 0 alc: alc enable flag 0: alc disable (reset) 1: alc enable fdout: fadeout enable flag 0: fadeout disable (reset) 1: fadeout enable fdin: fadein enable flag 0: fadein disable (reset) 1: fadein enable stat: status flag 0: alc (including fadein and fadeout) operation or initializing operation (reset) 1: manual mode stat bit is ?0? during initializing operation after exiting power-down by pdn pin. after the finish of the initializing operation, stat bit becomes ?1?. during the alc operation, stat bit becomes ?1? after the max ?1? att/gain operation is completed by internal state. fr: select alc operation mode 0: the alc operation corresponds to impulse noise. (reset) 1: the alc operation is the same as ak4516a zelmn: enable zero crossing dete ction at alc li miter operation 0: enable (reset) 1: disable in case of zelmn = ?0?, ipga of each l/r channel do zero crossing or timeout indepe ndently, the ipga value is changed by the alc operation. zero crossing timeout is the same as the alc recovery operation. in case of zelmn = ?1?, the ipga value is changed immediately.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 26 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 07h input pga control 0 ipga6 ipga5 ipga4 ipga3 ipga2 ipga1 ipga0 r/w r/w reset 0 28h ipga6-0: input analog pga; 97 levels; commonly lch and rch of ipga0 and ipga1. the ipga value should be the same or smaller than ref value before the alc1 operation including the fadein/fadeout operation. when ipga gain is changed, ipga6-0 bits should be written while pm1-0 bits are not ?00? and alc bit is ?0?. (refer to ?operation of ipga? description) gain(db) data mic line step level 60h +28.0 +6.0 5fh +27.5 +5.5 5eh +27.0 +5.0 ? ? ? 28h +0.0 -22.0 27h -0.5 -22.5 ? ? ? 19h -7.5 -29.5 18h -8.0 -30.0 0.5db 73 17h -9.0 -31.0 16h -10.0 -32.0 ? ? ? 11h -15.0 -37.0 10h -16.0 -38.0 1db 8 0fh -18.0 -40.0 0eh -20.0 -42.0 ? ? ? 05h -38.0 -60.0 04h -40.0 -62.0 2db 12 03h -44.0 -66.0 02h -48.0 -70.0 01h -52.0 -74.0 4db 3 00h mute mute 1 table 15. input gain setting there is not line table in ipga1 ipga value is reset at pm1-0 = ?00?.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 27 - ? operation of ipga [reading operation] when the ipga value is read by p, the ipga value is the written value finall y. therefore, the actual value may differ to the ipga value which is read by p. [writing operation at alc enable] during the alc operation including the fadein/out operation, if the ipga value is written by up, the ipga value does not reflect the present value. [writing operation at alc disable] the zero crossing detection of ipga is done to l/r channels independently. zero crossing timeout is set by ztm1-0 bits. when the control register is written from p, the zero crossing counter for l/r channels commonly is reset and its counter starts. when the signal detects zero crossing or zero crossing timeout, the written value from p becomes a valid for the first time. in case of writing to the control register continually, the control register should be written by an interval more than zero crossing timeout. if an appointed interval is written, there is possible to the different value the ipga value of l/r channels. for example, when the present ipga value is updated by zero crossing detection in a channel of one side and other channel is not updated, if the new data is written in ipga, the updated channel is keeping the last ipga value and other channel is updated to a new ipga value by the last zero crossing counter. therefore, zero crossing counter does not reset when the zero crossing detection is waiting. [ipga gain after completing alc operation] the ipga gain changed by alc operation is not reflected to the ipga register. therefore, when completing alc operation (alc bit; ?1? ? ?0?), the ipga register is different from the actual gain of ipga. the value should be re-written to the ipga register in order to set the actual gain of ipga with a register value. [operation of ipga at power-down by the control register] gain of ipga0 and ipga1 is reset when pm1-0 bits are ?00?, and then ipga operation starts from the default value after exiting pm1-0 bits = ?00?. when ipga6-0 bits are read, the register values written by the last write operation are read out regardless the actual gain. [operation of ipga when the number of ipga channels is changed] when the number of ipga channels is changed, pm1-0 bits should be done via ?00?. if pm1-0 bits are not done via ?00?, there is a possibility that gain between ipga0 and ipga1 is different. however, powered-up all channels become the same gain when ipga value is written at alc disabled state (alc bit = ?0?) or the alc limiter/recovery operation is done.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 28 - addr register name d7 d6 d5 d4 d3 d2 d1 d0 08h lch peak hold phl7 phl6 phl5 phl4 phl3 phl2 phl1 phl0 09h rch peak hold phr7 phr6 phr5 phr4 phr3 phr2 phr1 phr0 r/w rd reset 00h phl7-0: lch peak hold (absolute value) phr7-0: rch peak hold (absolute value) the peak data is output from adc0, it is held l/r independently. these registers are reset by reading from p. 20 x log 10 [(data) / 256)] < peak level [db] 20 x log 10 [(data+1) / 256)] data peak level ffh 0.0db -0.034 db feh -0.034db -0.068db fdh -0.068db -0.102db ? ? 02h -38.62db -42.14db 01h -42.14db -48.16db 00h -48.16db - (infinity) table 16. peak level these registers are reset on the following any conditions. - pdn pin = ?l? - pm2 = pm3 = ?0?
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 29 - function detail ? alc operation 1. alc limiter operation during the alc limiter operation, when either lch or rch in ipga0 and ipga1 exceed alc limiter detection level (lmth), ipga value is attenuated by alc limiter att step (lmat1-0) automatically. then the ipga value is changed commonly for l/r channels in ipga0 and ipga1. timeout period is set by ltm1-0 bits. the operation for attenuation is done continuously until the input signal level becomes lmth or less. after finishing the operation for attenuation, if alc bit does not change into ?0?, the operation of attenuation repeats when the input signal level exceed lmth. when fr bit is ?0?, the alc operation corresponds to the impulse noise in additional to the alc operation of ak4516a. then if the impulse noise is supplied at zelmn = ?0?, the alc recove ry operation becomes the faster period than a set of ztm1-0 bits. in case of zelmn = ?1?, it becomes the same period as ltm1-0 bits. when fr bit is ?1?, the alc operation in AK4563A is the same as ak4516a?s. [explanation for alc operation] recovery waiting counter reset level (lmth) limiter detection level(lmth) a tt level (lmat1-0) (1) 2db a tt level (lmat1-0) a tt level (lmat1-0) limiter update period (ltm1-0) limiter finish limiter starts figure 16. disable alc zero cr ossing detection (zelmn = ?1?) (1) when the signal is input between 2db, the AK4563A does not operate the alc limiter and recovery.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 30 - (3) zero crossing timeout (ztm1-0) att level (lmat1-0) a tt level (lmat1-0) (3) zero crossing timeout (ztm1-0) limiter detection level (lmth) limiter detection level (lmth) (1) (1) (2) (2) recovery waiting counter reset level (lmth) figure 17. in case of continuing the limiter operation (zelmn = ?0?) (1) when the input level exceeds the alc limiter detection level, the alc limiter operation starts. zero crossing counter starts at the same time. (2) zero crossing detection. when the input signal is detected, the ipga value is attenuated until the value set by lmat1-0 and the alc limiter operation is finished. (3) zero crossing timeout is set by ztm1-0 bits. but the first zero crossing timeout cycle after starting the limiter operation may be the short cycle by the state of the last zero crossing counter. (for example, in case of doing the limiter operation during the recovery operation)
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 31 - 2. alc recovery operation the alc recovery operation waits until a time of setting wtm1-0 bits after completing the alc limiter. if the input signal does not exceed ?alc recovery waiting counter reset level (lmth)?, the alc recovery operation is done. the ipga value increases automatically by this operation up to the set reference level (ref6-0 bits). then the ipga value is set for l/r commonly. the alc recovery operation is done at a period set by wtm1-0 bits. when l/r channels in ipga0 and ipga1 are detected by zero crossing operation during wtm1-0, the alc recovery operation waits until wtm1-0 period and the next recovery operation is done. during the alc recovery operation or the recovery waiting, when either input signal level of l/r channels in ipga0 and ipga1 exceed the alc limiter detection level (lnth), the alc recovery operation changes into the alc limiter operation immediately in case of ?alc recovery waiting counter reset level (lmth) input signal < alc limiter detection level (lmth)? during the alc recovery operation, the waiting timer of alc re covery operation is reset. therefore, in case of ?alc recovery waiting counter reset level (lmth) > input signal?, the waiting timer of alc recovery operation starts. if the impulse noise is supplied at fr = ?0?, the alc recovery operation becomes the faster period than a set of ztm1-0 and wtm1-0 bits. when fr bit is ?1?, the alc operation in ak4561 is the same as ak4516a?s. during recovery counter reset limiter detection level (lmth) recovery waiting counter reset level (lmth) zero crossing detect wtm counter starts wtm counter starts wtm counter starts ztm counter starts ztm counter starts (1) (2) (2) wtm counter starts (2) figure 18. the transition from the limiter operation to the recovery operation (1). when the input signal is below the alc recovery waiting counter reset level, the alc recovery operation waits the time set by wtm1-0 bits. if the input signal does not exceed the alc limiter detection level or the alc recovery waiting counter reset level, the alc recovery operation is done only once. (2). the ipga value is changed by the zero crossing operation in alc recovery operation, but the next counter of the alc recovery waiting timer is also starting. other: when a channel of one side enters the limiter operation dur ing the waiting zero crossing, the present alc recovery operation stops, according as the small value of ipga (a channel of waiting zero crossing), the alc limiter operation is done. when both channels are waiting for the next alc recovery operation, the alc limiter operation is done from the ipga value of a point in time.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 32 - (1) recovery waiting counter reset level (lmth) or reference value of recovery operation (ref6-0) (2) zero crossing timeout (ztm1-0) & recovery waiting time (wtm1-0) gain level (ratt1-0) zero crossing detect figure 19. the alc recovery operation (1) when the input signal exceeds the alc recovery waiting counter reset level, the alc recovery operation stops, the alc recovery operation is repeated when input signal level is below ?alc recovery waiting counter reset level (lmth)? again. when the ipga value by repeating the alc recovery operation reaches the reference level (ref6-0 bits), the alc recovery operation stops also. (2) ztm1-0 bits set zero crossing timeout and wtm1-0 bits sets the alc recovery operation period. when the alc recovery waiting time (wtm1-0 bits) is shorter than zero crossing timeout period of ztm1-0 bit, the alc recovery is operated by the zero crossing timeout period of ztm1-0 bit. therefore, in this case the auto recovery operation period is not constant.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 33 - does not change the following registers during the alc operation. ? ltm1-0, lmth, lmat 1-0, wtm1-0, ztm1-0, ratt, ref6-0, zelmn manual-mode wr ( power mana g ement control & si g nal select re g isters ) wr ( lmat1-0 , ratt , lmth ) wr ( ref6-0 ) alc o p eration wr ( alc= ?1?, zelmn ) wr ( ipga6-0 ) wr ( ztm1-0, wtm1-0, ltm1-0 ) wr ( alc= ?0? ) rd ( stat ) finish alc-mode and become manual-mode finish alc mode? stat = ?1?? * the value of ipga should be the same or smaller than ref?s. yes ye s no no figure 20. registers set-up sequence at alc operation
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 34 - ? fadein mode in fadein mode, the ipga value is increased at the value set by fdatt when fdin bit changes from ?0? to ?1?. the update period can be set by fdtm1-0 bits. the fadein mode is always detected by the zero crossing operation. this operation is kept over the ref value or until the limiter operation at once. if the limiter operation is done during fadain cycle, the fadein operation becomes the alc operation. note: when fdin and fdout bits are ?1?, fdout operation is enabled. ipga output a lc bit fdin bit (1) (2) (3) (4) (5) figure 21. example for controlling sequence in fadein operation (1) wr (alc = fdin = ?0?): the alc operation is disabled. to start the fadein operation, fdin bit is written in ?0?. (2) wr (ipga = ?mute?): the ipga output is muted. (3) wr (alc = fdin = ?1?): the fadein operation starts. the ipga changes from the mute state to the fadein operation. (4) the fadein operation is done until the limiter detecti on level (lmth) or the reference level (ref6-0). after completing the fadein operation, the AK4563A becomes the alc operation. (5) fadein time can be set by fdtm1-0 and fdatt bits e.g. fdtm1-0 = 32ms, fdatt = 1step (96 x fdtm1-0) / fdatt = 96 x 32ms / 1 = 3.07s
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 35 - ? fadeout mode in fadeout mode, the present ipga value is decreased until the mute state when fdout bit changes from ?0? to ?1?. this operation is always detected by the zero crossing operation. if the large signal is input to the alc circuit during the fadeout operation, the alc limiter operation is done. however a total time of the fadeout operation is the same time, even if the limiter operation is done. the period of fadeout is set by fdtm1-0 bits, a number of step can be set by fdatt bit. when fdout bit changes into ?0? during the fadeout operation, the alc operation start from the preset ipga value. when fdout and alc bits change into ?0? at the same time, the fadeout operation stops and the ipga becomes the value at that time. note: when fdin and fdout bits are ?1?, fdout operation is enabled. ipga output a lc bit fdout bit (1) (5) (6) (7) (4) (3) (2) (8) figure 22. example for controlling sequence in fadeout operation (1) wr (fdout = ?1?): the fadeout operation starts. then alc bit should be always ?1?. (2) fadeout time can be set by fdtm1-0 and fdatt bits. during the fadein operation, the zero cr ossing timeout period is ignored and becomes the same as the fadein period. e.g. fdtm1-0 = 32ms, fdatt = 1step (96 x fdtm1-0) / fdatt = 96 x 32ms / 1 = 3.07s (3) the fadeout operation is completed. the ipga value is the mute state. if fdout bit is keeping ?1?, the ipga value is keeping the mute state. (4) analog and digital outputs mutes externally. then the ipga value is the mute state. (5) wr (alc = fdout = ?0?): exit the alc and fadeout operations (6) wr (ipga): the ipga value changes the initial value (exiting mute state). (7) wr (alc = ?1?, fdout = ?0?): the alc operation restar ts. but the alc bit should not write until completing zero crossing operation of ipga. (8) release a mute function of analog and digital outputs externally.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 36 - system design figure 23 shows the system connection diagram. an evaluation board (akd4563a) is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. 2.3 3.0v a nalog suppl y 2.2 0.1 10 1.5 3.0v digital supply micro controller audio controller lout rout intl1 intr1 intl0 intr0 extr lin rin vcom a gnd va vref vd dgnd vt sdto0 lrck mclk bclk cdto cdti csn cclk pdn sdto1 sdti 1 2 3 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20 21 24 25 26 27 28 a k4563a extl + 10 22 23 4 + 10 0.1 10 0.1 + + 10 0.1 figure 23. system connection diagram note: - agnd and dgnd of AK4563A should be distributed separately from the ground of external controller etc. - when lout/rout drives some capacitive load, some resistor should be added in series between lout/rout and capacitive load.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 37 - 1. grounding and power supply decoupling the AK4563A requires careful attention to power supply and grounding arrangements. va is usually supplied from analog supply in system and vd is supplied from analog supply in system via a resistor of 10 ohms. alternatively if va and vd are supplied separately, the power up sequence is not taken care. vt is a power supply pin to interface with the external ics and is supplied from digital supply in system. agnd and dgnd of the AK4563A should be connected to analog ground plane. system analog ground and digital ground s hould be connected together near to where the supplies are brought onto the printed circuit board. decoupling capacitors should be as near to the AK4563A as possible, with the small value ceramic capacitor being the nearest. 2. voltage reference the differential voltage between vref and agnd sets the analog input/output range. vref pin is normally connected to va with a 0.1 f ceramic capacitor. vcom is output to 0.45 x va(typ.) and is a signal ground of this chip. an electrolytic capacitor 2.2 f parallel with a 0.1 f ceramic capacitor attached to vcom pin eliminates the effects of high frequency noise. no load current may be drawn from vcom pin. all signals, especially clocks, should be kept away from the vref and vcom pins in order to avoid unwanted coupling into the AK4563A. 3. analog inputs the analog inputs are single-ended and the input resistance is 10k ? (typ) at mic gain table and 125k ? (typ) at line gain table. the input signal range scales with the vref voltage and nominally 0.6 x vref vpp centered in the internal common voltage. usually the input signal is ac coupled with capacitor. the cut-off frequency is fc = (1/2 rc). the AK4563A can accept input voltages to (va-0.1) vpp. the adc output data format is 2?s complement. the output code is 7fffh(@16bit) for input a bove a positive full scale and 8000h(@16bit) for input below a negative fi ll scale. the ideal code is 0000h(@16bit) with no input signal. the dc offset including adc own dc offset removed by the internal hpf (fc=3.7hz@fs=48khz). the AK4563A samples the analog inputs at 64fs. the digital filter rejects noise above the stopband except for multiples of 64fs. the AK4563A includes an anti-aliasing filter (rc filter) to attenuate a noise around 64fs. 4. analog outputs the analog outputs are single-ended and nominally 0.6 x vref vpp centered in the internal common voltage. the input data format is 2?s complement. the output voltage is a positive full scale for 7fffh(@16bit) and a negative full scale for 8000h(@16bit). the ideal output is the vcom voltage for 0000h(@16bit). if the noise generated by the delta-sigma modulator beyond the audio band would be the problem, the attenuation by external circuit is required. dc offsets on analog outputs are eliminated by ac coupling since analog outputs have dc offsets of a few mv + vcom volrage.
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 38 - package 0.5 0.2 *1: dimension does not include mold flash. 9.8 0.2(* 1) 1 14 15 28 28 p in vsop ( unit: mm ) 5.6 0.08 0.65 0.12 +0.10 0.22 -0.05 m 0.10 0.05 1.15 0.10 0 10 7.6 ? material & lead finish package molding compound: epoxy lead frame material: cu lead frame surface treatm ent: solder plate (pb free)
asahi kasei [AK4563A] ms0067-e-02 2004/12 - 39 - marking akm a k4563avf xxxbyyyyc xxxbyyyyc data code identifier xxxb : lot number (x : digit number, b : alpha character) yyyyc : assembly date (y : digit number, c alpha character) important notice ? these products and their specifications are subject to change without notice. before considering any use or application, consult the asahi kasei microsystems co., ltd. (akm) sales office or authorized distributor concerning their current status. ? akm assumes no liability for infringement of any patent, intellectual property, or other right in the application or use of any information contained herein. ? any export of these products, or devices or systems containing them, may require an export license or other official approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials. ? akm products are neither intended nor authorized for use as critical components in any safety, life support, or other hazard related device or system, and akm assumes no responsibility relating to any such use, except with the express written consent of the representative director of akm. as used here: a. a hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. b. a critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. ? it is the responsibility of the buyer or distributor of an akm product who distributes, disposes of, or otherwise places the product with a third party to notify that party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold akm harmless from any and all claims arising from the use of said product in the absence of such notification.

▲Up To Search▲

Price & Availability of AK4563A

	To Download AK4563A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .