
ASAHI KASEI 
[AK4683] 
MS0427-E-01 
2005/11 
- 64 - 
 Register Map (ADC/DAC part) 
Addr 
Register Name 
00H 
Powerdown 1 
01H 
Powerdown 2 
02H 
Clock Select 1 
03H 
Clock Select 2 
04H 
Clock Select 3 
05H 
Clock Select 4 
06H 
Sampling Speed 
07H 
Data Source Select 1 
08H 
Data Source Select 2 
09H 
Analog Input Control 
0AH 
Audio Data Format 
0BH 
De-emphasis/ ATT speed 
0CH 
LIN Volume Control 
0DH 
RIN Volume Control 
0EH 
LOUT1 Volume Control 
0FH 
ROUT1 Volume Control 
10H 
LOUT2 Volume Control 
11H 
ROUT2 Volume Control 
12H 
HPL Volume Control 
13H 
OVF/DZF/V Control 
Note: For addresses from14H to 1FH, data must not be written. 
When PDN pin goes to “L”, the registers are initialized to their default values. 
When RSTN1 bit goes to “0”, the internal timing is reset and DZF pin goes to “H”, but registers are not initialized 
to their default values. 
D7 
D6 
D5 
D4 
D3 
0 
0 
D2 
D1 
D0 
PWXTL 
PWPOB 
0 
CKSL2 
CKSAI2
0 
0 
0 
0 
0 
0 
DEM21 
ATTAD7 
ATTAD7 
ATTDA7 
ATTDA7 
ATTDA7 
ATTDA7 
0 
0
MUTEN
PWPOA
0 
CKSL1
CKSAI1
XTL1 
ACKSAI
0 
DAC22
0 
0 
DEM20
ATTAD6
ATTAD6
ATTDA6
ATTDA6
ATTDA6
ATTDA6
0 
0 
PWVR
PWDA
0 
CKSL0
CKSAI0
XTL0 
ACKSAO
DITD1
DAC21
0 
DIFB1
DEM11
ATTAD5
ATTAD5
ATTDA5
ATTDA5
ATTDA5
ATTDA5
0 
ZCE 
PWHP
PWAD
0 
CLKL1
0 
CKSDT
ACKSB
DITD0
DAC20
0 
DIFB0
DEM10
ATTAD4
ATTAD4
ATTDA4
ATTDA4
ATTDA4
ATTDA4
OPGA4
VIN 
SMAD 
0 
CLKB0 
MCKO1 
OLRA0 
CKSB1 
DFSAD 
SDTOB0 
DAC12 
AIN2 
TDMA0 
ATSAD 
ATTAD2 
ATTAD2 
ATTDA2 
ATTDA2 
ATTDA2 
ATTDA2 
OPGA2 
FUNC0 
SMDA 
PWDA2 
CLKA1 
MCKO0 
BCAF 
CKSB0 
DFSDA1 
SDTOA1 
DAC11 
AIN1 
DIFA1 
0 
ATTAD1 
ATTAD1 
ATTDA1 
ATTDA1 
ATTDA1 
ATTDA1 
OPGA1 
DZFM1 
RSTN1
PWDA1
CLKA0
CLKDT
MSA 
MSB 
DFSDA0
SDTOA0
DAC10
AIN0 
DIFA0
ATSDA
ATTAD0
ATTAD0
ATTDA0
ATTDA0
ATTDA0
ATTDA0
OPGA0
DZFM0
CLKB1
CLKL0
OLRA1
CKSB2
0 
SDTOB1
0 
0 
TDMA1
0 
ATTAD3
ATTAD3
ATTDA3
ATTDA3
ATTDA3
ATTDA3
OPGA3
FUNC1