ak4537 AKM Semiconductor, Inc., ak4537 Datasheet - Page 56

• Manufacturer Part Number: ak4537
• Description: 16-bit 6 Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0202-E-04
Addr
Addr
0BH
0CH
0DH
0FH
IPGAL6-0:
IPGAR6-0: Rch Input Analog PGA (see Table 32)
ATTL/R7-0: Digital ATT Output Control (see Table 18)
Register Name
Lch Input PGA Control
Rch Input PGA Control
Register Name
Lch Digital ATT Control
Rch Digital ATT Control
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.
Default: “00H” (0dB)
Default
Default
R/W
R/W
Lch Input Analog PGA (see Table 32)
DATA (HEX)
47
46
45
36
2F
10
06
05
04
03
02
01
00
:
:
:
:
ATTR7
ATTL7
R/W
RD
D7
D7
0
0
0
0
MIC Input
+27.5
+27.0
+26.5
+19.0
+15.5
+0.0
5.0
5.5
6.0
6.5
7.0
7.5
8.0
Table 32. Input Gain Setting
:
:
:
:
IPGAL6
IPGAR6
ATTL6
ATTR6
R/W
R/W
GAIN (dB)
D6
D6
0
0
- 56 -
IPGAR5
IPGAL5
ATTR5
LINE Input
ATTL5
R/W
R/W
D5
D5
0
0
+12.0
+11.5
+11.0
-15.5
+3.5
+0.0
20.5
21.0
21.5
22.0
22.5
23.0
23.5
:
:
:
:
IPGAL4
IPGAR4
ATTR4
ATTL4
R/W
R/W
D4
D4
1
0
STEP
0.5dB
IPGAL3
IPGAR3
ATTL3
ATTR3
R/W
R/W
D3
D3
0
0
IPGAL2
IPGAR2
ATTL2
ATTR2
Default
R/W
R/W
D2
D2
0
0
IPGAL1
IPGAR1
ATTL1
ATTR1
R/W
R/W
D1
D1
0
0
[AK4537]
IPGAR0
IPGAL0
ATTR0
ATTL0
2005/04
R/W
R/W
D0
D0
0
0