AK4683_07 Datasheet, PDF (33/84 Pages) Asahi Kasei Microsystems – Asynchronous Multi-Channel Audio CODEC with DIR/T

[AK4683]
1-2. TDM 256 mode: TDMA1-0 bit = “01”
The TDMA1-0 bits = “01” set the AK4683 audio serial interface format to the TDM 256 mode. The serial data of
all SDTIA (1,2,3) is input to the SDTIA1 pin. The input data to SDTIA2-3 pins is ignored. BICKA should be fixed
to 256fs. “H” time and “L” time of I/OLRCKA pin should be 1/256fs at least. The DIFA1-0 bits select eight
modes.
Mode
8
9
10
11
12
13
14
15
Master DIFA1 DIFA0 SDTOA SDTIA1-3 LRCKA
BICKA
/slave
I/O
I/O
Slave
0
0
24bit, L J 20bit, R J ↑ I 256fs I
Slave
0
1
24bit, L J 24bit, R J ↑ I 256fs I
Slave
1
0
24bit, L J 24bit, L J ↑ I 256fs I
Slave
1
1
24bit, I²S 24bit, I²S ↓
I 256fs I
Master
0
0
24bit, L J 20bit, R J ↑ O 256fs O
Master
0
1
24bit, L J 24bit, R J ↑ O 256fs O
Master
1
0
24bit, L J 24bit, L J ↑ O 256fs O
Master
1
1
24bit, I²S 24bit, I²S ↓ O 256fs O
Table 32. Audio Interface Format (TDM 256 mode, L J: Left justified, R J: Right justified.)
(default)
1-3. TDM 128 mode: TDMA1-0 bit = “11”
The TDMA1-0 bits = “11” set the AK4683 audio serial interface format to the TDM 1286 mode. The four channel
serial data (SDTIA1, 2) is input to the SDTIA1 pin. Other two channel data (SDTIA3) is input to the SDTIA2 pin.
Mode
16
17
18
19
20
21
22
23
Master DIFA1 DIFA0 SDTOA SDTIA1-3 LRCKA
BICKA
/slave
I/O
I/O
Slave
0
0
24bit, L J 20bit, R J ↑ I 128fs I
Slave
0
1
24bit, L J 24bit, R J ↑ I 128fs I
Slave
1
0
24bit, L J 24bit, L J ↑ I 128fs I
Slave
1
1
24bit, I²S 24bit, I²S
↓
I 128fs I
Master
0
0
24bit, L J 20bit, R J ↑ O 128fs O
Master
0
1
24bit, L J 24bit, R J ↑ O 128fs O
Master
1
Master
1
0
24bit, L J 24bit, L J ↑ O 128fs O
1
24bit, I²S 24bit, I²S ↓ O 128fs O
Table 33. Audio Interface Format (TDM 128 mode, L J: Left justified, R J: Right justified.)
(default)
MS0427-E-02
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2007/04