ak4642e AKM Semiconductor, Inc., ak4642e Datasheet - Page 62

• Manufacturer Part Number: ak4642e
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0420-E-00
Addr
Addr
0AH
0DH
0EH
Addr
0CH
Addr
09H
0BH
IVL7-0, IVR7-0: Input Digital Volume; 0.375dB step, 242 Level (see Table 28.)
DVL7-0, DVR7-0: Output Digital Volume (see Table 31.)
LMTH1: ALC Limiter Detection Level / Recovery Counter Reset Level (see Table 21.)
RGAIN1: ALC Recovery GAIN Step (see Table 25.)
DEM1-0: De-emphasis Frequency Select (Table 29)
BST1-0: Bass Boost Function Select (Table 30)
DVOLC: Output Digital Volume Control Mode Select
SMUTE: Soft Mute Control
LOOP: Digital Loopback Mode
Default: “E1H” (+30.0dB)
Default: “18H” (0dB)
Default: “01” (OFF)
Default: “00” (OFF)
0: Independent
1: Dependent (Default)
0: Normal Operation (Default)
1: DAC outputs soft-muted
0: SDTI → DAC (Default)
1: SDTO → DAC
Register Name
Lch Digital Volume Control
Rch Digital Volume Control
Register Name
Mode Control 3
Register Name
Lch Input Volume Control
Rch Input Volume Control
Register Name
ALC Mode Control 3
When DVOLC bit = “1”, DVL7-0 bits control both Lch and Rch volume level, while register values of
DVL7-0 bits are not written to DVR7-0 bits. When DVOLC bit = “0”, DVL7-0 bits control Lch level and
DVR7-0 bits control Rch level, respectively.
Default
Default
Default
Default
RGAIN1
DVL7
DVR7
IVR7
IVL7
D7
D7
D7
0
D7
1
0
0
0
LMTH1
IVL6
IVR6
DVR6
DVL6
LOOP
D6
D6
D6
1
D6
0
0
0
- 62 -
SMUTE
IVL5
IVR5
DVL5
DVR5
D5
1
D5
D5
D5
0
0
0
0
DVOLC
IVR4
IVL4
DVL4
DVR4
D4
D4
D4
D4
0
1
0
1
0
DVR3
IVL3
IVR3
DVL3
BST1
D3
D3
D3
D3
0
1
0
0
0
DVR2
IVR2
DVL2
IVL2
BST0
D2
D2
D2
D2
0
0
0
0
0
DVR1
IVR1
DVL1
IVL1
DEM1
D1
D1
D1
D1
0
0
0
0
0
[AK4642EN]
2005/09
DVL0
DVR0
DEM0
IVL0
IVR0
D0
D0
D0
D0
1
0
0
0
1