ak4561 AKM Semiconductor, Inc., ak4561 Datasheet - Page 27

• Manufacturer Part Number: ak4561
• Description: 16bit Codec With Built-in Alc And Mic/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Output PGA Control
Rev. 0.9
Addr
09H
OPGA4-0: Output analog PGA; 32 Level; 0dB -50dB, Mute.
Output PGA Control
RESET
Register Name
RESET
These bits can change volume of Headphone-Amp and Monaural-Amp.
This volume includes zero crossing detection, and it does L/R channels independently. Zero
crossing timeout is 32ms.
These periods are value at fs=32kHz (FS bit = “0”) or fs=48kHz (FS bit = “1”).
DATA
1DH
0DH
1FH
1EH
0FH
0EH
10H
05H
04H
03H
02H
01H
00H
D7
Table 16. ATT value of Analog Volume
0
0
AKM CONFIDENTIAL
GAIN(dB)
D6
0
0
Mute
-15
-16
-18
-20
-36
-38
-42
-46
-50
+0
-1
-2
- 27 -
D5
0
0
STEP
1dB
2dB
4dB
OPGA4
D4
1
LEVEL
OPGA3 OPGA2 OPGA1 OPGA0
17
11
3
1
D3
1
D2
1
D1
1
[AK4561]
2000/09
D0
1