
ASAHI KASEI 
[AK4683] 
MS0427-E-01 
2005/11 
- 71 - 
Register Map (DIR/DIT part)
Addr 
Register Name 
D7 
D6 
D5 
D4 
D3 
D2 
D1 
D0 
00H 
01H 
02H 
03H 
04H 
05H 
06H 
07H 
08H 
09H 
0AH RX Channel Status Byte 2 
0BH RX Channel Status Byte 3 
0CH RX Channel Status Byte 4 
0DH 
TX Channel Status Byte 0 
0EH 
TX Channel Status Byte 1 
0FH 
TX Channel Status Byte 2 
10H 
TX Channel Status Byte 3 
11H 
TX Channel Status Byte 4 
12H 
Burst Preamble Pc Byte 0 
13H 
Burst Preamble Pc Byte 1 
14H 
Burst Preamble Pd Byte 0 
15H 
Burst Preamble Pd Byte 1 
16H 
Q-subcode Address / Control 
17H 
Q-subcode Track 
18H 
Q-subcode Index 
19H 
Q-subcode Minute 
1AH Q-subcode Second 
1BH Q-subcode Frame 
1CH Q-subcode Zero 
1DH Q-subcode ABS Minute 
1EH Q-subcode ABS Second 
1FH 
Q-subcode ABS Frame 
When PDN pin goes “L”, the registers are initialized to their default values. 
When RSTN bit goes “0”, the internal timing is reset and the registers are initialized to their default values. 
All data can be written to the register even if PWN bit is “0”. 
The “0” register should be written “0”, the “1” register should be written “1” data. 
CLK & Power Down Control 
Format & De-em Control 
Input/ Output Control 0 
Input/ Output Control 1 
INT MASK 
TEST 
Receiver status 0 
Receiver status 1 
RX Channel Status Byte 0 
RX Channel Status Byte 1 
CS12
0 
TXE
EFH1
MQIT0 MAUT0
1 
QINT
FS3 
CR7 
CR15
CR23
CR31
CR39
CT7 
CT15
CT23
CT31
CT39
PC7 
PC15
PD7 
PD15
Q9 
Q17 
Q25 
Q33 
Q41 
Q49 
Q57 
Q65 
Q73 
Q81 
1 
1 
0 
CM1 
1 
OPS1 
0 
MCIT0
1 
CINT 
FS1 
CR5 
CR13 
CR21 
CR29 
CR37 
CT5 
CT13 
CT21 
CT29 
CT39 
PC5 
PC13 
PD5 
PD13 
Q7 
Q15 
Q23 
Q31 
Q39 
Q47 
Q55 
Q63 
Q71 
Q79 
CM0 
0 
OPS0 
0 
MULK0 MDTS0
1 
UNLCK DTSCD
FS0 
CR4 
CR12 
CR20 
CR28 
CR36 
CT4 
CT12 
CT20 
CT28 
CT39 
PC4 
PC12 
PD4 
PD12 
Q6 
Q14 
Q22 
Q30 
Q38 
Q46 
Q54 
Q62 
Q70 
Q78 
OCKS1
DEAU
0 
DIT 
OCKS0 
DEM1 
0 
0 
MPE0 
1 
PEM 
V 
CR2 
CR10 
CR18 
CR26 
CR34 
CT2 
CT10 
CT18 
CT26 
CT39 
PC2 
PC10 
PD2 
PD10 
Q4 
Q12 
Q20 
Q28 
Q36 
Q44 
Q52 
Q60 
Q68 
Q76 
PWN 
DEM0 
0 
IPS1 
MAUD0
0 
AUDION
QCRC 
CR1 
CR9 
CR17 
CR25 
CR33 
CT1 
CT9 
CT17 
CT25 
CT39 
PC1 
PC9 
PD1 
PD9 
Q3 
Q11 
Q19 
Q27 
Q35 
Q43 
Q51 
Q59 
Q67 
Q75 
RSTN2
DFS 
0 
IPS0 
MPAR0
1 
PAR 
CCRC 
CR0 
CR8 
CR16 
CR24 
CR32 
CT0 
CT8 
CT16 
CT24 
CT32 
PC0 
PC8 
PD0 
PD8 
Q2 
Q10 
Q18 
Q26 
Q34 
Q42 
Q50 
Q58 
Q66 
Q74 
EFH0 
0 
0 
AUTO
FS2 
CR6 
CR14 
CR22 
CR30 
CR38 
CT6 
CT14 
CT22 
CT30 
CT39 
PC6 
PC14 
PD6 
PD14 
Q8 
Q16 
Q24 
Q32 
Q40 
Q48 
Q56 
Q64 
Q72 
Q80 
0 
CR3 
CR11 
CR19 
CR27 
CR35 
CT3 
CT11 
CT19 
CT27 
CT39 
PC3 
PC11 
PD3 
PD11 
Q5 
Q13 
Q21 
Q29 
Q37 
Q45 
Q53 
Q61 
Q69 
Q77