AK4586 Datasheet, PDF (20/54 Pages) Asahi Kasei Microsystems – MULTI CHANNEL AUDIO CODEC WITH DIR

ASAHI KASEI
[AK4586]
Sampling Frequency and Pre-emphasis Detect
The AK4586 outputs the encoded information of sampling frequency and pre-emphasis in channel status to FS0, FS1 and
PEM bits in control register. These information are output from channel 1 at default. It can be switched to channel 2 by
CS12 bit in control register.
FS1
FS0
fs
Byte 3
Bits 0-3
0
0
44.1kHz
0000
0
1
Reserved all others
1
0
48kHz
0100
1
1
32kHz
1100
Table 6. Sampling frequency information in Consumer Mode
PEM
0
1
Pre-emphasis
OFF
ON
Byte 0
Bits 3-5
≠ 0X100
0X100
Table 7. Pre-emphasis information in Consumer Mode
MS0097-E-01
- 20 -
2001/12