參數(shù)資料
型號(hào): AK4562
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: LOW POWER 20BIT CODEC WITH PGA
中文描述: 低功耗20位編解碼器美巡賽
文件頁數(shù): 21/29頁
文件大?。?/td> 167K
代理商: AK4562
ASAHI KASEI
[AK4562]
MS0031-E-00
2000/05
- 21 -
Output Analog PGA Control
Addr
04H
Register Name
Output Analog PGA Control
RESET
D7
D6
D5
D4
D3
D2
D1
D0
ZEOP
0
OPGA6
OPGA5
OPGA4
OPGA3
00H (MUTE)
OPGA2
OPGA1
OPGA0
ZEOP:
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).
When ZEOP is “0”, OPGA changes immediately.
OPGA6-0: Output Analog PGA. 58 levels. 00H=MUTE.
ON/OFF of zero crossing detection can be controlled by ZEOP bit.
Please do not use 3AH
7FH.
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
HEX CODE
39H
38H
37H
18H
17H
16H
15H
03H
02H
01H
00H
Table 4. Output Gain Setting
OPGA (dB)
+0
-1
-2
-33
-34
-36
-38
-74
-76
-78
MUTE
Step
Level
1dB
35
2dB
22
1
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