ak5358a AKM Semiconductor, Inc., ak5358a Datasheet - Page 12

• Manufacturer Part Number: ak5358a
• Description: 96khz 24-bit ?? Adc
• Manufacturer: AKM Semiconductor, Inc.

■
Two kinds of data formats can be chosen with the DIF pin
compliment format. The SDTO is clocked out on the falling edge of SCLK. The audio interface supports both master and
slave modes. In master mode, SCLK and LRCK are output with the SCLK frequency fixed to 64fs and the LRCK
frequency fixed to 1fs.
■
The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz
(@fs=48kHz) and scales with sampling rate (fs).
MS0511-E-02
Audio Interface Format
Digital High Pass Filter
LRCK
BICK(64fs)
SDTO(o)
LRCK
BICK(64fs)
SDTO(o)
Mode
0
1
0
0
23 22
23:MSB, 0:LSB
1 2
1 2
23 22
23:MSB, 0:LSB
DIF pin
H
L
3
4
20 21
24bit, I
24bit, MSB justified
4
Lch Data
3 2 1
21
Lch Data
Table 3. Audio Interface Format
3 2 1
22 23
22 23
2
SDTO
Figure 1. Mode 0 Timing
Figure 2. Mode 1 Timing
S Compatible
0
24
24
0
25
- 12 -
(Table
31 0 1 2
LRCK
0 1 2
H/L
L/H
3). In both modes, the serial data is in MSB first, 2’s
23 22
23 22
≥ 48fs or 32fs
≥ 48fs or 32fs
SCLK
4
20 21
Rch Data
4
3
21
Rch Data
3
2
22
22
2
1
23
23
1
Figure 1
Figure 2
0
24
Figure
24
0
25
31
[AK5358A]
0
0
23
2008/01
1
1