ak4564 AKM Semiconductor, Inc., ak4564 Datasheet - Page 38

• Manufacturer Part Number: ak4564
• Description: 16bit Codec With Built-in Alc And Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Filter Select 2
MS0140-E-01
Addr
05H
LPF1: Select cut-off frequency of LPF1 to revise frequency response. This is 1
LPF2: Select cut-off frequency of LPF2 to revise frequency response. This is 1
LPF2D: Enable LPF2
Filter Select 2
Default
0: OFF (Default)
1: LPF2 ON
Register Name
Table 12. Select cut-off frequency of LPF1
Table 13. Select cut-off frequency of LPF2
D7
LPF1-1
LPF2-1
0
0
0
0
1
1
0
0
1
1
D6
0
0
LPF1-0
LPF2-0
0
1
0
1
0
1
0
1
- 38 -
D5
0
0
10.125kHz
fs=32kHz
fs=32kHz
13.5kHz
6.75kHz
4.5kHz
6kHz
9kHz
3kHz
OFF
LPF2D
Cut-off Frequency
Cut-off Frequency
D4
0
LPF2-1
10.125kHz
fs=48kHz
fs=48kHz
13.5kHz
6.75kHz
4.5kHz
D3
6kHz
9kHz
3kHz
0
OFF
st
st
order and IIR filter.
order and IIR filter.
LPF2-0
D2
0
Default
Default
LPF1-1
D1
0
[AK4564]
LPF1-0
2002/07
D0
0