ak4562 AKM Semiconductor, Inc., ak4562 Datasheet - Page 21

• Manufacturer Part Number: ak4562
• Description: Low Power 20bit Codec With Pga
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Output Analog PGA Control
MS0031-E-00
Addr
04H
ZEOP:
OPGA6-0: Output Analog PGA. 58 levels. 00H=MUTE.
Register Name
Output Analog PGA Control
RESET
Select OPGA zero crossing operation (0: Disable, 1: Enable)
Writing to OPGA value at ZEOP = “1”, OPGA value of L/R channels changes by zero crossing
detection or timeout independently.
Timeout cycle can be set by ZTM1-0 bit.
When ZTM1-0 is “11”, timeout cycle is 2048/fs = 46.4ms (@fs=44.kHz).
ON/OFF of zero crossing detection can be controlled by ZEOP bit.
Please do not use 3AH 7FH.
When ZEOP is “0”, OPGA changes immediately.
DATA (D6-0)
011 1001
011 1000
011 0111
001 1000
001 0111
001 0110
001 0101
000 0011
000 0010
000 0001
000 0000
ZEOP
D7
0
HEX CODE
Table 4. Output Gain Setting
OPGA6
39H
38H
37H
18H
17H
16H
15H
03H
02H
01H
00H
D6
- 21 -
OPGA5
OPGA (dB)
D5
MUTE
-33
-34
-36
-38
-74
-76
-78
+0
-1
-2
OPGA4
D4
00H (MUTE)
Step
1dB
2dB
OPGA3
D3
Level
35
22
1
OPGA2
D2
OPGA1
D1
[AK4562]
OPGA0
2000/05
D0