ak5385b AKM Semiconductor, Inc., ak5385b Datasheet - Page 15

• Manufacturer Part Number: ak5385b
• Description: 24bit 192khz ?? Adc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Two kinds of data formats can be chosen with the DIF pin (Table 4). In both modes, the serial data is in MSB first, 2’s
complement format. The SDTO is clocked out on the falling edge of BICK. The audio interface supports both master and
slave modes. In master mode, BICK and LRCK are output with the BICK frequency fixed to 64fs and the LRCK
frequency fixed to 1fs.
The M/S pin selects either master or slave modes. M/S pin = “H” selects master mode and “L” selects slave mode. The
AK5385B outputs BICK and LRCK in master mode. In slave mode, provide MCLK, BICK and LRCK.
MS0406-E-00
Audio Interface Format
Master Mode and Slave Mode
LRCK
BICK(64fs)
SDTO(o)
LRCK
BICK(64fs)
SDTO(o)
Mode
0
0
1
0
23 22
23:MSB, 0:LSB
1 2
1 2
23 22
23:MSB, 0:LSB
DIF pin
3
H
L
M/S pin
4
L
H
20 21
4
Lch Data
3 2 1
21
24bit, I
Table 5. Master mode/Slave mode
24bit, MSB justified
Lch Data
Table 4. Audio Interface Format
3 2 1
22 23
22 23
Master Mode
Figure 1. Mode 0 Timing
Figure 2. Mode 1 Timing
Slave Mode
2
SDTO
S Compatible
Mode
0
24
24
0
25
- 15 -
31 0 1 2
0 1 2
LRCK = Output
BICK = Output
23 22
LRCK = Input
BICK = Input
BICK, LRCK
LRCK
H/L
L/H
23 22
≥ 48fs
≥ 48fs
BICK
4
20 21
Rch Data
4
3
21
Rch Data
3
2
22
22
2
Figure 1
Figure 2
1
Figure
23
23
1
0
24
24
0
25
31
[AK5385B]
0
0
23
2005/08
1
1