ak4644 AKM Semiconductor, Inc., ak4644 Datasheet - Page 72

• Manufacturer Part Number: ak4644
• Description: Stereo Codec With Mic/hp/rcv-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0477-E-01
Addr
Addr
0AH
0DH
0EH
Addr
0CH
Addr
09H
0BH
IVL7-0, IVR7-0: Input Digital Volume; 0.375dB step, 242 Level (See Table 36.)
DVL7-0, DVR7-0: Output Digital Volume (See Table 39.)
VBAT: HP-Amp Common Voltage (See Table 53.)
LMTH1: ALC Limiter Detection Level / Recovery Counter Reset Level (See Table 28.)
RGAIN1: ALC Recovery GAIN Step (See Table 32.)
DEM1-0: De-emphasis Frequency Select (See Table 37)
BST1-0: Bass Boost Function Select (See Table 38)
DVOLC: Output Digital Volume Control Mode Select
SMUTE: Soft Mute Control
LOOP: Digital Loopback Mode
Default: “E1H” (+30.0dB)
Default: “18H” (0dB)
0: 0.5 x HVDD (Default)
1: 0.64 x AVDD
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
IVL7
IVR7
DVR7
DVL7
D7
D7
D7
0
D7
1
0
0
0
LMTH1
IVL6
IVR6
DVR6
DVL6
LOOP
D6
D6
D6
1
D6
0
0
0
- 72 -
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
VBAT
IVR1
DVL1
IVL1
DEM1
D1
D1
D1
D1
0
0
0
0
[AK4644]
2006/10
DVL0
DVR0
DEM0
IVL0
IVR0
D0
D0
D0
D0
1
0
0
0
1