參數(shù)資料
型號(hào): AK4537VN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16-Bit ツヒ Stereo CODEC with MIC/HP/SPK-AMP
中文描述: 16位ツヒ立體聲編解碼器與麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁(yè)數(shù): 56/76頁(yè)
文件大?。?/td> 576K
代理商: AK4537VN
ASAHI KASEI
[AK4537]
MS0202-E-04
2005/04
- 56 -
Addr
0BH
0FH
Register Name
Lch Input PGA Control
Rch Input PGA Control
R/W
Default
D7
0
0
RD
0
D6
D5
D4
D3
D2
D1
D0
IPGAL6
IPGAR6
R/W
0
IPGAL5
IPGAR5
R/W
0
IPGAL4
IPGAR4
R/W
1
IPGAL3
IPGAR3
R/W
0
IPGAL2
IPGAR2
R/W
0
IPGAL1
IPGAR1
R/W
0
IPGAL0
IPGAR0
R/W
0
IPGAL6-0: Lch Input Analog PGA (see Table 32)
IPGAR6-0: Rch Input Analog PGA (see Table 32)
Default: “10H” (0dB)
When IPGA gain is changed, IPGAL6-0 and IPGAR6-0 bits should be written while PMMICL, PMMICR,
PMIPGL or PMIPGR bit is “1” and ALC1 bit is “0”. IPGA gain is reset when PMMICL=PMMICR=PMIPGL
=PMIPGR= “0”, and then IPGA operation starts from the default value when PMMICL, PMMICR, PMIPGL
or PMIPGR bit is changed to “1”. When ALC1 bit is changed from “1” to “0”, IPGA holds the last gain value
set by ALC1 operation. When IPGAL6-0 and IPGAR6-0 bits are read, the register values written by the last
write operation are read out regardless the actual gain.
GAIN (dB)
DATA (HEX)
MIC Input
LINE Input
47
+27.5
46
+27.0
45
+26.5
:
:
36
+19.0
:
:
2F
+15.5
:
:
10
+0.0
:
:
06
5.0
05
5.5
04
6.0
03
6.5
02
7.0
01
7.5
00
8.0
Table 32. Input Gain Setting
Addr
Register Name
D7
D6
0CH
Lch Digital ATT Control
ATTL7
ATTL6
ATTL5
0DH
Rch Digital ATT Control
ATTR7
ATTR6
ATTR5
R/W
R/W
R/W
Default
0
0
ATTL/R7-0: Digital ATT Output Control (see Table 18)
Default: “00H” (0dB)
Default
STEP
+12.0
+11.5
+11.0
:
+3.5
:
+0.0
:
-15.5
:
20.5
21.0
21.5
22.0
22.5
23.0
23.5
0.5dB
D5
D4
D3
D2
D1
D0
ATTL4
ATTR4
R/W
0
ATTL3
ATTR3
R/W
0
ATTL2
ATTR2
R/W
0
ATTL1
ATTR1
R/W
0
ATTL0
ATTR0
R/W
0
R/W
0
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