ASAHI KASEI
[AK4122]
Addr Register Name
02H Audio Interface Format
D7
0
RD
0
D6
0
RD
0
D5
0
RD
0
D4
ODIF
R/W
0
D3
IDIF1
R/W
0
D2
IDIF0
R/W
1
D1
DIF1
R/W
0
D0
DIF0
R/W
1
R/W
Default
DIF1-0: Audio Interface Format for PORT1 (Table 8)
Initial values are “01”.
IDIF1-0: Audio Interface Format for PORT2 (Table 9)
Initial values are “01”.
ODIF: Audio Interface Format for PORT3 (Table 10)
Initial values are “0”.
Addr Register Name
03H DIR Control
R/W
D7
CS12
R/W
0
D6
AMUTE
R/W
D5
EFH1
R/W
0
D4
EFH0
R/W
1
D3
IPS1
R/W
0
D2
IPS0
R/W
0
D1
OPS1
R/W
0
D0
OPS0
R/W
0
Default
1
OPS1-0: Output Through Data Select for TX (Table 15)
Initial values are “00”.
IPS1-0: Input Recovery Data Select (Table 14)
Initial values are “00”.
EFH1-0: Interrupt 0 pin Hold Count Select
Initial values are “01”.
LRCK of Table 21 is DIR’s LRCK, the hold time scales with 1/fs.
EFH1
EFH0
Hold Count
512LRCK
1024LRCK
2048LRCK
4096LRCK
0
0
1
1
0
1
0
1
Default
Table 21. Hold count select
AMUTE: Auto Mute Control
0 : Normal operation
1 : Auto Mute (Default)
When AMUTE bit = “1”, SDTIO and SDTO are muted automatically when the AK4122 detects unlock,
Non-Audio or Non-PCM/DTS-CD.
CS12: Channel Status select
0 : Channel 1 (Default)
1 : Channel 2
This bit selects that channel status is used to derive C-bit buffers, AUDN, PEM, FS3-0, Pc, Pd and CRC.
MS0267-E-02
2004/07
- 39 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
