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ASAHI KASEI
[AK4563A]
AK4563A
Low Power 16bit 4ch ADC & 2ch DAC with ALC
GENERAL DESCRIPTION The AK4563A is low power operation, 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 = 50/15s, 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-First, 2's compliment (AK4516A Compatible) * ADC: 16bit MSB justified, 16bit LSB justified, I2S * DAC: 16bit MSB justified, 16bit LSB justified, I2S 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 C 12. Package: 28pin VSOP
MS0067-E-02 -1-
2004/12
ASAHI KASEI
[AK4563A]
INTL0 EXTL LIN INTR0 EXTR RIN INTL1
IPGA0
ADC0 HPF Audio I/F Controller LRCK BCLK SDTO0 SDTO1 SDTI
IPGA1 INTR1
ADC1
HPF
LOUT
VD VT DGND PDN DAC De-emp
ROUT VCOM VREF VA AGND
Control Register I/F
Clock Divider
CSN
CCLK
CDTI
CDTO
MCLK
Figure 1. AK4563A Block Diagram
MS0067-E-02 -2-
2004/12
ASAHI KASEI
[AK4563A]
Ordering Guide
AK4563AVF AKD4563A -20 +85C 28pin VSOP (0.65mm pitch) Evaluation board for AK4563A
Pin Layout
LOUT ROUT INTL1 INTR1 INTL0 INTR0 EXTL EXTR LIN RIN VCOM AGND VA VREF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 PDN CCLK CSN CDTI CDTO BCLK MCLK LRCK SDTI SDTO1 SDTO0 VT DGND VD
AK4563A
24 23
Top View
22 21 20 19 18 17 16 15
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ASAHI KASEI
[AK4563A]
PIN / FUNCTION
No. 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 Pin Name LOUT ROUT INTL1 INTR1 INTL0 INTR0 EXTL EXTR LIN RIN VCOM AGND VA VREF VD DGND VT SDTO0 SDTO1 SDTI LRCK MCLK BCLK CDTO CDTI CSN CCLK PDN I/O O O I I I I I I I I O I O O I I I I O I I I I Function Lch Analog Output Pin Rch Analog Output Pin Lch INT #1 Input Pin Rch INT #1 Input Pin Lch INT #0 Input Pin Rch INT #0 Input Pin Lch EXT Input Pin Rch EXT Input Pin Lch Line Input Pin Rch Line Input Pin Common Voltage Output Pin, 0.45 x VA Bias voltage of ADC inputs and DAC outputs Analog Ground Pin Analog Power Supply Pin, +2.3 3.0V ADC & DAC Voltage Reference Input Pin, VA Used as a voltage reference of ADC & DAC. VREF is connected externally to fltered VA. Digital Power Supply Pin, +2.3 3.0V Digital Ground Pin Digital I/F Power Supply Pin, +1.5 3.0V Audio Serial Data #0 Output Pin Audio Serial Data #1 Output Pin Audio Serial Data Input Pin Input/Output Channel Clock Pin Master Clock Input Pin Audio Serial Data Clock Pin Control Data Output Pin Control Data Input Pin Chip Select Pin Control Data Clock Pin Power Down & Reset Pin, "L": Power Down & Reset, "H": Normal Operation
Note: All digital input pins should not be left floating.
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ASAHI KASEI
[AK4563A]
ABSOLUATE MAXIMUM RATING (AGND, DGND=0V; Note 1) Parameter Symbol min Power Supply Analog (VA pin) VA -0.3 Digital 1 (VD pin) VD -0.3 Digital 2 (VT pin) VT -0.3 | DGND - AGND | (Note 2) GND Input Current, Any Pin Except Supplies IIN Analog Input Voltage VINA -0.3 INTL1-0, INTR1-0, EXTL, EXTR, LIN, RIN, VREF Digital Input Voltage VIND -0.3 Ambient Temperature Ta -20 Storage Temperature Tstg -65
Note 1. All voltages with respect to ground. Note 2. AGND and DGND should be the same voltage.
max 4.6 4.6 4.6 0.3 10 VA+0.3 VT+0.3 85 150
Units V V V V mA V V C C
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 Power Supply Analog (VA pin) VA 2.3 2.5 Digital 1 (VD pin) (Note 3) VD 2.3 or VA-0.3 2.5 Digital 2 (VT pin) VT 1.5 2.5 Reference Analog Reference Voltage VREF Voltage (VREF pin) (Note 4) 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 usage beyond the conditions in this datasheet.
max 3.0 VA VD VA
Units V V V V
MS0067-E-02 -5-
2004/12
ASAHI KASEI
[AK4563A]
ANALOG CHARACTERISTICS (Ta=25C; 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 Characteristics (IPGA): Input Voltage 1.35 1.5 1.65 Vpp (INTL1-0, INTR1-0, EXTL, EXTR, LIN, RIN pins) (Note 5) Input Resistance: MIC (INTL1-0,INTR1-0,EXTL,EXTR pins) 6.5 10 14.5 k LINE (LIN, RIN pins) 80 125 176 MIC LINE Step Size 0.1 0.5 0.9 dB +28dB -8dB +6dB -30dB (Note 6) 0.1 1 1.9 dB -8dB -16dB -30dB -38dB 0.1 2 3.9 dB -16dB -32dB -38dB -54dB 2 dB -32dB -40dB -54dB -62dB 4 dB -40dB -52dB -62dB -74dB 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") 18 27 mA All Power ON (PM4-0= "1") 13.5 mA IPGA0+ADC0+IPGA1+ADC1 (PM3-0= "1") 5.5 mA DAC (PM4= "1") Power-down mode (PDN= "L") (Note 9) 10 100 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.
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ASAHI KASEI
[AK4563A]
FILTER CHARCTERISTICS (Ta=25C; 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 PB 0 18.9 kHz -1.0dB 21.8 kHz -3.0dB 23.0 kHz Stopband (Note 10) SB 29.4 kHz Passband Ripple PR dB 0.1 Stopband Attenuation SA 65 dB Group Delay (Note 11) GD 17.0 1/fs Group Delay Distortion 0 GD s ADC Digital Filter (HPF): Frequency Response (Note 10) -3.0dB FR 3.7 Hz -0.56dB 10 Hz -0.15dB 20 Hz DAC Digital Filter: Passband (Note 10) 0.1dB PB 0 21.7 kHz -6.0dB 24.0 kHz Stopband (Note 10) SB 26.2 kHz Passband Ripple PR dB 0.06 Stopband Attenuation SA 43 dB Group Delay (Note 11) GD 14.8 1/fs Group Delay Distortion 0 GD s DAC Digital Filter + Analog Filter: FR dB Frequency Response: 0 20.0kHz 0.5 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=25C; VA, VD=2.3 3.0V, VT=1.5 3.0V) Parameter Symbol min Input High Level Voltage VIH 80%VT Input Low Level Voltage VIL VOH VT-0.4 Output High Level Voltage: Iout=-400A VOL Output Low Level Voltage: Iout=400A Input Leakage Current Iin -
typ -
max 20%VT 0.4 10
Units V V V V A
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2004/12
ASAHI KASEI
[AK4563A]
SWITCHING CHARASTERISTICS (Ta=25C; VA, VD=2.3 3.0V, VT=1.5 3.0V; CL=20pF) Parameter Symbol min Control Clock Frequency Master Clock(MCLK) 256fs: Frequency fCLK 2.048 Pulse Width Low tCLKL 28 Pulse Width High tCLKH 28 384fs: Frequency fCLK 3.072 Pulse Width Low tCLKL 23 Pulse Width High tCLKH 23 Channel Selection Clock (LRCK) frequency fs 8 Duty 45 Audio Interface Timing BCLK Period tBLK 312.5 BCLK Pulse Width Low tBLKL 130 Pulse Width High tBLKH 130 BCLK "" to LRCK tBLR -tBLKH+50 LRCK to SDTO(MSB) (Except IIS mode) tDLR BCLK "" to SDTO tDSS SDTI Hold Time tSDH 50 SDTI Setup Time tSDS 50
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) Reset/Calibration Timing PDN Pulse Width PDN "" to SDTO0/SDTO1 valid tCCK tCCKL tCCKH tCKH2 tCDS tCDH tCSW tCSS tCSH tDCD tCCZ tPDW tPDV 200(Note 12) 80 80 80 50 50 150(Note 12) 50(Note 12) 50
typ 12.288
max 12.8
Units MHz ns ns MHz ns ns kHz % ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 1/fs
18.432
19.2
48 50
50 55
tBLKL-50 80 80
70 70 150 4128
Note 12. fs 22.4kHz. In the case of fs < 22.4kHz, these three parameters must meet a relationship of (tCSW + tCSS + 6 x tCCK) > 1/(32 x 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 < 39.1kHz, tCCK must meet a relationship tCCK > 1/(128 x fs) in addition to these specifications. For example, when fs=8kHz, tCCK(min) is 977ns. Note 13. RL=1k/10% Change (Pulled-up operates for VT.)
MS0067-E-02 -8-
2004/12
ASAHI KASEI
[AK4563A]
Timing Diagram
LRCK
tBLR
50%VT tBLKH tBLKL
BCLK
50%VT tDLR tDSS
SDTO0,1
D15 (MSB) tSDS tSDH
50%VT
SDTI
LSB
50%VT
Figure 2. Audio Data Input/Output Timing (Audio I/F Format: No.0)
CSN
50%VT
tCSS
tCCKL tCCKH
CCLK tCDH tCDS CDTI op0 op1 Hi-Z op2 A0
50%VT
50%VT
CDTO
Figure 3. WRITE/READ Command Input Timing
tCSW
CSN
50%VT
tCSH
CCLK
50%VT
CDTI
D4
D5 Hi-Z
D6
D7
50%VT
CDTO
Figure 4. WRITE Data Input Timing
MS0067-E-02 -9-
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ASAHI KASEI
[AK4563A]
CSN tCKH2 CCLK
50%VT
50%VT
CDTI
A3
A4
50%VT
tDCD Hi-Z CDTO D0 D1 D2 50%VT
Figure 5. READ Data Output Timing 1
tCSW CSN
50%VT
tCSH
CCLK
50%VT
CDTI tCCZ CDTO D4 D5 D6 D7
50%VT
50%VT
Figure 6. READ Data Input Timing 2
tPDW PDN 50%VT tPDV
SDTO0,1
50%VT
Figure 7. Reset Timing
MS0067-E-02 - 10 -
2004/12
ASAHI KASEI
[AK4563A]
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=86ms@fs=48kHz. During offset calibration, the ADC digital data outputs of both channels are forced to a 2's compliment "0". Output data of settles data equivalent for analog input signal after offset calibration. This cycle is not for DAC. As a normal offset calibration may not be executed, nothing write at address 01H during offset calibration.
MS0067-E-02 - 11 -
2004/12
ASAHI KASEI
[AK4563A]
Power Supply PDN pin PDN pin may be "L" at power-up. ADC Internal PD State AIN SDTO0,1 DAC Internal State SDTI GD (1) AOUT (4) Control register W rite to register Inhibit-1 Read from register Inhibit-1 External clocks (5) The clocks may be stopped. Normal Inhibit-2 Normal INIT-1 INIT-2 Normal INIT-2 Normal GD (1) PD "0"data Normal (2) (3) "0"data Idle Noise PM "0"data GD (1) (4) (1) Normal
4128/fs 4128/fs
INIT GD
Normal GD (1)
PM
INIT
Normal GD
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") .
MS0067-E-02 - 12 -
2004/12
ASAHI KASEI
[AK4563A]
Digital High Pass Filter (HPF)
The ADC has HPF for the DC offset cancel. The cut-off frequency 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 data 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. 0 1 2 3
DIF1 bit 0 0 1 1
DIF0 bit 0 1 0 1
SDTO0/SDTO1(ADC) SDTI(DAC) MSB justified LSB justified LSB justified LSB justified MSB justified MSB justified I2S compatible I2S compatible Table 1. Audio Data Format
BCLK 32fs = 64fs 32fs 32fs
Figure Figure 9 Figure 10 Figure 11 Figure 12
RESET
LRCK
0 1 2 3 8 9 10 11 12 13 14 15 0 1 2 3 8 9 10 11 12 13 14 15 0 1
BCLK(32fs) SDTO(o) SDTI(i)
0
15 14 13
1 2 3
8
7
14
6
15
5
16
4
17
3
18
2
1
31
0
0
15 14 13
1 2 3
8
7
14
6
15
5
16
4
17
3
18
2
1
31
0
0
15
1
BCLK(64fs) SDTO0,1(o) SDTI(i)
15 14 13 13 2 1 0 15 14 13 1 2 1 0 15
Don't Care 15:MSB, 0:LSB Lch Data
15 14
1
0
Don't Care Rch Data
15 14
1
0
Figure 9. Audio Data Timing (No.0)
LRCK
0 1 2 15 16 17 18 19 20 31 0 1 2 15 16 17 18 19 20 31 0 1
BCLK(64fs) SDTO0,1(o) SDTI(i)
15 15 14 13 12 4 1 0 15 15 14 13 12 1 0 19
Don't Care 15:MSB, 0:LSB
15 14 13 12
1
0
Don't Care
15 14 13 12
1
0
Lch Data
Rch Data
Figure 10. Audio Data Timing (No.1)
MS0067-E-02 - 13 -
2004/12
ASAHI KASEI
[AK4563A]
LRCK
0 1 2 8 9 10 11 12 13 14 15 0 1 2 8 9 10 11 12 13 14 15 0 1
BCLK(32fs) SDTO0,1(o) SDTI(I)
0
15 14
1 2 3
8
7
14
6
15
5
16
4
17
3
18
2
1
31
0
0
15 14
1 2 3
8
14
7
14
6
15
5
16
4
17
3
18
2
1
31
0
0
15
1
BCLK(64fs) SDTO0,1(o) SDTI(i)
15 14 13 13 2 1 0 15 14 13 14 2 1 0 15
15 14 13
13 2
1
0
Don't Care
15 14 13 14
2
1
0
Don't Care
15
15:MSB, 0:LSB Lch Data Rch Data
Figure 11. Audio Data Timing (No.2)
LRCK
0 1 2 3 4 9 10 11 12 13 14 15 0 1 2 3 4 9 10 11 12 13 14 15 0 1
BCLK(32fs) SDTO0,1(o) SDTI(I)
0
0
1
15
2
14 13
3 4
7
14
7
15
6
16
5
17
4
18
3
2
31
1
0
0
1
15 14 13
2 3 44
7
14
7
15
6
16
5
17
4
18
3
2
31
1
0
0
1
BCLK(64fs) SDTO0,1(o) SDTI(i)
15 14 13 2 1 0 15 14 13 2 2 1 0
15 14 13
2
1
0
Don't Care
15 14 13
2
2
1
0
Don't Care
15:MSB, 0:LSB
Lch Data
Rch Data
Figure 12. Audio Data Timing (No.3)
MS0067-E-02 - 14 -
2004/12
ASAHI KASEI
[AK4563A]
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.
CSN
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
CCLK CDTI CDTO CDTI READ CDTO
op0 op1 op2 A0 A1 A2 A3 A4 D0 D1 D2 D3 D4 D5 D6 D7 "1" "1" "1"
WRITE
Hi-Z
op0 op1 op2 A0 A1 A2 A3 A4 "1" "1" "0"
Hi-Z
D0 D1 D2 D3 D4 D5 D6 D7
Hi-Z
op0-op2: Op code (110:READ, 111:WRITE) A0-A4: Register Address D0-D7: Control data
Figure 13. Control Data Timing
MS0067-E-02 - 15 -
2004/12
ASAHI KASEI
[AK4563A]
Register Map
Addr 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H Register Name Input Select Power Management Mode Control Timer Select ALC Mode Control 1 ALC Mode Control 2 Operation Mode Input PGA Control Peak Hold Lch Peak Hold Rch D7 0 0 0
FDTM1
D6 0 0 0
FDTM0
D5 0 PM5 0 ZTM1
LMAT1
D4 0 PM4 FS ZTM0
LMAT0
0 0 0 0 PHL7 PHR7
0 REF6 0 IPGA6 PHL6 PHR6
REF5
ZELMN
IPGA5 PHL5 PHR5
REF4 FR IPGA4 PHL4 PHR4
D3 LINE PM3 DIF1 WTM1 FDATT REF3 STAT IPGA3 PHL3 PHR3
D2 EXT PM2 DIF0 WTM0 RATT1 REF2 FDIN IPGA2 PHL2 PHR2
D1 INT1 PM1 DEM1 LTM1 RATT0 REF1
FDOUT
IPGA1 PHL1 PHR1
D0 INT0 PM0 DEM0 LTM0 LMTH REF0 ALC IPGA0 PHL0 PHR0
Register Definitions
The following condition can not read and write all registers. * PDN pin = "L" Addr 00H Register Name Input Select R/W RESET D7 0 0 D6 0 0 D5 0 0 D4 0 R/W 0 0 0 1 1 D3 LINE D2 EXT D1 INT1 D0 INT0
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.
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ASAHI KASEI
[AK4563A]
Addr 01H
Register Name Power Management R/W RESET
D7 0 0
D6 0 0
D5 PM5 0
D4 PM4 R/W 1
D3 PM3 1
D2 PM2 1
D1 PM1 1
D0 PM0 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 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 Table 3. ADC power control
RESET
RESET
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".
All Power-down (PM3-2 = "00") 2ch Mode (PM3-2 = "01")
3ch Mode (PM3-2 = "10")
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".
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2004/12
ASAHI KASEI
[AK4563A]
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".
MS0067-E-02 - 18 -
2004/12
ASAHI KASEI
[AK4563A]
Organization of Power Management bit
PM5 PM3-2 ADC0 PM4 DAC MUX AMP
PM1-0 IPGA0 ALC IPGA1 ALC 1) All Power PM0: 1 PM1: 1 PM2: 1 PM3: 1 PM4: 1 PM5: 0 2) 2ch REC Mode PM0: 1 PM1: 0 PM2: 1 PM3: 0 PM4: 0 PM5: 0 3) 2ch REC monitor PM0: 1 PM1: 0 PM2: 1 PM3: 0 PM4: 0 PM5: 1 4) 3ch REC Mode PM0: 0 PM1: 1 PM2: 0 PM3: 1 PM4: 0 PM5: 0 5) 4ch REC Mode PM0: 1 PM1: 1 PM2: 1 PM3: 1 PM4: 0 PM5: 0 6) Play PM0: 0 PM1: 0 PM2: 0 PM3: 0 PM4: 1 PM5: 0 7) Analog-Through Mode PM0: 1 PM1: 0 PM1-0 PM2: 0 IPGA0 PM3: 0 ALC PM4: 0 PM5: 1 PM1-0 IPGA0 ALC IPGA1 ALC
ADC1 PM3-2 ADC0 PM4 DAC MUX AMP
ADC1
PM1-0 IPGA0 ALC
PM3-2 ADC0
PM5
PM1-0 IPGA0 ALC PM1-0 IPGA0 ALC IPGA1 Lch ALC PM1-0 IPGA0 ALC IPGA1 ALC
PM3-2 ADC0 MUX AMP
PM3-2 ADC0
ADC1 PM3-2 ADC0
Lch
ADC1
PM4 DAC MUX AMP
PM5
MUX AMP
Figure 15. Power Management
MS0067-E-02 - 19 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 02H
Register Name Mode Control R/W RESET
D7 0 0
D6 0 0
D5 0 0
D4 FS R/W 1
D3 DIF1 0
D2 DIF0 0
D1 DEM1 0
D0 DEM0 1
DEM1-0: Select De-emphasis frequency The AK4563A includes the digital de-emphasis filter (tc = 50/15s) 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 RESET 0 1 OFF 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) 0 0 0 MSB justified LSB justified 1 0 1 LSB justified LSB justified 2 1 0 MSB justified MSB justified 3 1 1 I2S compatible I2S compatible Table 5. Select Audio Serial Interface Format
BCLK 32fs =64fs 32fs 32fs
Figure Figure 9 Figure 10 Figure 11 Figure 12
RESET
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.
MS0067-E-02 - 20 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 03H
Register Name Timer Select R/W RESET
D7
FDTM1
D6
FDTM0
D5 ZTM1 0
0
0
D4 D3 ZTM0 WTM1 R/W 0 0
D2 WTM0 0
D1 LTM1 0
D0 LTM0 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 63s RESET 0 1 125s 1 0 250s 1 1 500s Table 6. ALC Limiter Operation Period WTM1-0: ALC Recovery Waiting Period A period of recovery operation when any limiter 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 the input signal level 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 RESET 0 0 8ms 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 RESET 0 0 8ms 0 1 16ms 1 0 64ms 1 1 512ms Table 8. Zero Crossing Timeout
MS0067-E-02 - 21 -
2004/12
ASAHI KASEI
[AK4563A]
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 crossing 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 RESET 0 0 24ms 0 1 32ms 1 0 48ms 1 1 64ms Table 9. FADEIN/OUT Period
MS0067-E-02 - 22 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 04H
Register Name ALC Mode Control 1 R/W RESET
D7 0 0
D6 0 0
D5
LMAT1
D4
LMAT0
0
D3 FDATT R/W 0 0
D2 RATT1 0
D1 RATT0 0
D0 LMTH 0
LMTH: Auto Limiter Detection Level / Auto Recovery Waiting Counter Reset Level LMTH ALC Limiter Detection Level ALC Recovery Waiting Counter Reset Level RESET 0 ADC Input -4.0dB -4.0dB > ADC Input -6.0dB 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 RESET 0 0 1 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, FDATT = "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. ATT Step RESET 0 1 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 bits at ZELMN = "0". When the attenuation value exceeds IPGA = "00H" (MUTE), it clips to "00". LMAT1 LMAT0 ATT Step RESET 0 0 1 0 1 2 1 0 3 1 1 4 Table 13. ALC Limiter ATT Step FDATT
MS0067-E-02 - 23 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 05H
Register Name ALC Mode Control 2 R/W RESET
D7 0 0
D6 REF6
D5 REF5
D4 REF4 R/W
D3 REF3 28H
D2 REF2
D1 REF1
D0 REF0
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) MIC 60H 5FH 5EH * 28H 27H * 19H 18H 17H 16H * 11H 10H 0FH 0EH * 05H 04H +28.0 +27.5 +27.0 * +0.0 -0.5 * -7.5 -8.0 -9.0 -10.0 * -15.0 -16.0 -18.0 -20.0 * -38.0 -40.0 LINE +6.0 +5.5 +5.0 * -22.0 -22.5 * -29.5 -30.0 -31.0 -32.0 * -37.0 -38.0 -40.0 -42.0 * -60.0 -62.0
DATA
Step
Level
0.5dB
73
1dB
8
2dB
12
03H -44.0 -66.0 4dB 3 02H -48.0 -70.0 01H -52.0 -74.0 00H MUTE MUTE 1 Table 14. Setting Reference Value at ALC Recovery Operation
MS0067-E-02 - 24 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 06H
Register Name Operation Mode R/W RESET
D7 0 0
D6 0 0
D5
ZELM N
D4 FR 0
D3 STAT RD 0
D2 FDIN 0
D1
FDOUT
D0 ALC 0
R/W 0
R/W 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 detection at ALC Limiter operation 0: Enable (RESET) 1: Disable In case of ZELMN = "0", IPGA of each L/R channel do zero crossing or timeout independently, 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.
MS0067-E-02 - 25 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 07H
Register Name Input PGA Control R/W RESET
D7 0 0
D6 IPGA6
D5 IPGA5
D4 D3 IPGA4 IPGA3 R/W 28H
D2 IPGA2
D1 IPGA1
D0 IPGA0
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) MIC 60H 5FH 5EH * 28H 27H * 19H 18H 17H 16H * 11H 10H 0FH 0EH * 05H 04H 03H 02H 01H 00H +28.0 +27.5 +27.0 * +0.0 -0.5 * -7.5 -8.0 -9.0 -10.0 * -15.0 -16.0 -18.0 -20.0 * -38.0 -40.0 LINE +6.0 +5.5 +5.0 * -22.0 -22.5 * -29.5 -30.0 -31.0 -32.0 * -37.0 -38.0 -40.0 -42.0 * -60.0 -62.0
DATA
Step
Level
0.5dB
73
1dB
8
2dB
12
-44.0 -66.0 4dB -48.0 -70.0 -52.0 -74.0 MUTE MUTE Table 15. Input Gain Setting
3 1
There is not LINE table in IPGA1 IPGA value is reset at PM1-0 = "00".
MS0067-E-02 - 26 -
2004/12
ASAHI KASEI
[AK4563A]
Operation of IPGA
[Reading operation] When the IPGA value is read by P, the IPGA value is the written value finally. 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.
MS0067-E-02 - 27 -
2004/12
ASAHI KASEI
[AK4563A]
Addr 08H 09H
Register Name Lch Peak Hold Rch Peak Hold R/W RESET
D7 PHL7 PHR7
D6 PHL6 PHR6
D5 PHL5 PHR5
D4 PHL4 PHR4 RD 00H
D3 PHL3 PHR3
D2 PHL2 PHR2
D1 PHL1 PHR1
D0 PHL0 PHR0
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 FFH FEH FDH * 02H 01H 00H Peak Level 0.0dB -0.034 dB -0.034dB -0.068dB -0.068dB -0.102dB * -38.62dB -42.14dB -42.14dB -48.16dB -48.16dB -(infinity) Table 16. Peak Level
These registers are reset on the following any conditions. - PDN pin = "L" - PM2 = PM3 = "0"
MS0067-E-02 - 28 -
2004/12
ASAHI KASEI
[AK4563A]
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 recovery 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]
Limiter starts ATT Level (LMAT1-0)
ATT Level (LMAT1-0) ATT Level (LMAT1-0)
Limiter Detection Level(LMTH) (1) 2dB Recovery Waiting Counter Reset Level (LMTH) Limiter Update Period (LTM1-0)
Limiter finish
Figure 16. Disable ALC zero crossing detection (ZELMN = "1") (1) When the signal is input between 2dB, the AK4563A does not operate the ALC limiter and recovery.
MS0067-E-02 - 29 -
2004/12
ASAHI KASEI
[AK4563A]
(3) Zero crossing timeout (ZTM1-0) ATT level (LMAT1-0)
Limiter detection level (LMTH)
(1)
(2) (2) Recovery waiting counter reset level (LMTH)
(1) Limiter detection level (LMTH)
ATT level (LMAT1-0) (3) Zero crossing timeout (ZTM1-0)
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)
MS0067-E-02 - 30 -
2004/12
ASAHI KASEI
[AK4563A]
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 recovery 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.
Limiter detection level (LMTH)
Recovery waiting counter reset level (LMTH)
During recovery counter reset
Zero crossing detect WTM counter starts
(1)
ZTM counter starts WTM counter starts
(2)
WTM counter starts
(2)
ZTM counter starts 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 during 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.
MS0067-E-02 - 31 -
2004/12
ASAHI KASEI
[AK4563A]
(1) Recovery waiting counter reset level (LMTH) or reference value of recovery operation (REF6-0)
Zero Crossing Detect
Gain Level (RATT1-0)
(2) Zero crossing timeout (ZTM1-0) & Recovery waiting time (WTM1-0)
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.
MS0067-E-02 - 32 -
2004/12
ASAHI KASEI
[AK4563A]
Does not change the following registers during the ALC operation. * LTM1-0, LMTH, LMAT1-0, WTM1-0, ZTM1-0, RATT, REF6-0, ZELMN
Manual-Mode
WR (Power Management Control & Signal Select registers)
WR (ZTM1-0, WTM1-0, LTM1-0)
WR (LMAT1-0, RATT, LMTH)
WR (REF6-0)
WR (IPGA6-0)
* The value of IPGA should be the same or smaller than REF's.
WR (ALC= "1", ZELMN)
ALC Operation
No
Finish ALC mode?
Yes WR (ALC= "0")
RD (STAT)
No
STAT = "1"?
Yes Finish ALC-Mode and become manual-Mode
Figure 20. Registers set-up sequence at ALC operation
MS0067-E-02 - 33 -
2004/12
ASAHI KASEI
[AK4563A]
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
ALC bit FDIN bit
(5)
(1) (2)
(3)
(4)
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 detection 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
MS0067-E-02 - 34 -
2004/12
ASAHI KASEI
[AK4563A]
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
ALC bit FDOUT bit
(2) (1) (3) (4) (5) (6) (7) (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 crossing 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 restarts. 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.
MS0067-E-02 - 35 -
2004/12
ASAHI KASEI
[AK4563A]
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.
1 2 3 4 5 6 7 8 9
LOUT ROUT INTL1 INTR1 INTL0 INTR0 EXTL EXTR LIN
PDN CCLK CSN CDTI CDTO BCLK
28 27 26 25 24 23 22 21 20 19 18 0.1 10 17 16 + 15 0.1 10 + 1.5 3.0V Digital Supply Audio Controller Micro Controller
AK4563A
MCLK LRCK SDTI SDTO1 SDTO0 VT DGND VD
10 RIN 0.1 2.2 + 2.3 3.0V Analog Supply + 10 14 VREF 0.1 13 VA 11 VCOM 12 AGND
10
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.
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2004/12
ASAHI KASEI
[AK4563A]
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 should 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 0.1F ceramic capacitor. VCOM is output to 0.45 x VA(typ.) and is a signal ground of this chip. An electrolytic capacitor 2.2F parallel with a 0.1F 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 = (1/2RC). 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 above a positive full scale and 8000H(@16bit) for input below a negative fill 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.
MS0067-E-02 - 37 -
2004/12
ASAHI KASEI
[AK4563A]
PACKAGE
28pin VSOP (Unit: mm)
9.80.2(* 1) 28
15
1
14
1.150.10
5.6 +0.10 0.15 - 0.05
0.65 +0.10 0.22 -0.05 0.08 0.12 M
0.100.05
0 10 0.50.2 7.60.2
*1: Dimension does not include mold flash.
Material & Lead finish
Package molding compound: Lead frame material: Lead frame surface treatment: Epoxy Cu Solder plate (Pb free)
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2004/12
ASAHI KASEI
[AK4563A]
MARKING
AKM AK4563AVF 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.
MS0067-E-02 - 39 -
2004/12

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