AK4560A Datasheet, PDF (27/47 Pages) Asahi Kasei Microsystems – 16bit CODEC with ALC and MIC/HP/SPK-Amps

ASAHI KASEI
[AK4560A]
Output PGA Control
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
09H Output PGA Control
0
0
0 OPGA4 OPGA3 OPGA2 OPGA1 OPGA0
R/W
RD
R/W
RESET
0
0
0
1
1
1
1
1
OPGA4-0: Output analog PGA; 32 Level; 0dB ∼ -50dB, Mute.
These bits can change volume of Headphone-Amps and Speaker-Amp.
This volume includes zero crossing detection, and it does L/R channels independently. Zero
crossing timeout is proportional to sampling rate, To = 512/fs.
10.7ms = 512/fs@fs=48kHz
16ms = 512/fs@fs=32kHz
RESET
DATA GAIN(dB) STEP
LEVEL
1FH
+0
1EH
-1
1DH
-2
:
:
1dB
17
10H
-15
0FH
-16
0EH
-18
0DH
-20
:
:
2dB
11
05H
-36
04H
-38
03H
-42
02H
-46
4dB
3
01H
-50
00H
Mute
1
Table 15. ATT value of Analog Volume
MS0028-E-00
- 27 -
2000/05