AK7600 Datasheet, PDF (13/38 Pages) Asahi Kasei Microsystems – 2/6-Channel Audio CODEC with Digital EQ

[AK7600]
■ Digital High Pass Filter
The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz
(@fs=44.1kHz). The frequency response scales with fs.
■ Master Clock Output Pin
CLKO is the output pin for master clock.
■ Audio Interface Format
The DIF pin can select between two serial data modes as shown in Table 2. In all modes the serial data is MSB-first,
two’s complement format and it is latched on the rising edge of BICK.
DIF
Mode
0
1
SDTO1-3
24bit, Left
justified
24bit, I²S
LRCK
I/O
H/L O
L/H O
BICK
I/O
64fs O
64fs O
(default)
Table 2. Audio Data Format (Stereo mode)
LRCK
01 2
BICK(64fs)
12 13 14
24 25
31 0 1 2
12 13 14
24 25
SDTO(o)
23 22
12 11 10
0
23 22
12 11 10
0
SDTO-23:MSB, 0:LSB
Lch Data
Rch Data
Figure 9. Mode 0 Timing (Left justified mode)
31 0 1
23
LRCK
0 1 2 3 22 23 24 25
BICK(64fs)
29 30 31 0 1 2 3 22 23 24 25
29 30 31 0 1
SDTO(o)
23 22
210
23 22
2 10
23:MSB, 0:LSB
Lch Data
Figure 10. Mode 1 Timing (I²S Mode)
Rch Data
MS0999-E-00
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2008/09