AK4586 Datasheet, PDF (28/54 Pages) Asahi Kasei Microsystems – MULTI CHANNEL AUDIO CODEC WITH DIR

ASAHI KASEI
[AK4586]
The audio serial interface format becomes the TDM I/F format if TDM bit is set to “1”. In the TDM mode, the serial data
of all DAC (six channels) is input to the SDTI1 pin. The input data to SDTI2-3 pins is ignored. BICK should be fixed to
256fs. In the slave mode, “H” time and “L” time of LRCK should be 1/256fs at least. In the master mode, “H” time (“L”
time at I²S mode) of LRCK is 1/8fs typically. LOOP1-0 should be set to “00” at the TDM mode. TDM mode cannot be
used in double speed mode.
Mode
8
9
10
11
12
13
14
15
14
15
SLAVE
0
1
DIF
210
000
001
010
011
100
101
110
111
xx0
1
SDTO
16bit, Right justified
18bit, Right justified
20bit, Right justified
24bit, Right justified
24bit, Left justified
24bit, I²S
24bit, Left justified
24bit, I²S
24bit, Left justified
24bit, I²S
SDTI1-3
16bit, Right justified
18bit, Right justified
20bit, Right justified
24bit, Right justified
24bit, Left justified
24bit, I²S
24bit, Left justified
24bit, I²S
24bit, Left justified
24bit, I²S
LRCK
I/O
↑^O
↑^O
↑^O
↑^O
↑^O
↓^O
↑^I
↓^I
↑^I
↓^I
BICK
I/O
256fs O
256fs O
256fs O
256fs O
256fs O
256fs O
256fs I
256fs I
256fs I
256fs I
Table 15. Audio Data Format (TDM= “1”)
LRCK(0)
BICK
(0:64fs)
012
15 16 17
31 0 1 2
SDTO(0)
SDTI(I)
15:MSB, 0:LSB
15:MSB, 0:LSB
15 14
10
15 14
10
Lch Data
Figure 12. Mode 0 Timing
15 16 17
15 14
15 14
Rch Data
31 0 1
10
10
LRCK(0)
BICK
(0:64fs)
012
9 10 11 12
31 0 1 2
9 10 11 12
SDTO(0)
23 22 21 20
23:MSB, 0:LSB
10
23 22 21 20
SDTI(I)
23 22 21 20
10
23 22 21 20
23:MSB, 0:LSB
Lch Data
Figure 13. Mode 3 Timing
Rch Data
31 0 1
10
10
MS0097-E-01
- 28 -
2001/12