AK4951AEN Datasheet, PDF (75/105 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4951A]
Addr
02H
Register Name
Signal Select 1
R/W
Default
D7
SLPSN
R/W
0
D6
MGAIN3
R/W
0
D5
DACS
R/W
0
D4
MPSEL
R/W
0
D3
PMMP
R/W
0
D2
MGAIN2
R/W
1
D1
MGAIN1
R/W
1
D0
MGAIN0
R/W
0
MGAIN3-0: Microphone Amplifier Gain Control (Table 23)
Default: “0110” (+18dB)
PMMP: MPWR pin Power Management
0: Power down: Hi-Z (default)
1: Power up
MPSEL: MPWR Output Select
0: MPWR1 pin (default)
1: MPWR2 pin
DACS: Signal Switch Control from DAC to Speaker Amplifier
0: OFF (default)
1: ON
SLPSN: Speaker Amplifier or Stereo Line Output Power-Save Mode
LOSEL bit = “0” (Speaker Output Select)
0: Power Save Mode (default)
1: Normal Operation
When SLPSN bit is “0”, Speaker Amplifier is in power-save mode. In this mode, the SPP pin
goes to Hi-Z and the SPN pin outputs SVDD/2 voltage. When PMSL bit = “1”, SLPSN bit is
enabled. After the PDN pin is set to “L”, Speaker Amplifier is in power-down mode since PMSL
bit is “0”.
LOSEL bit = “1” (Stereo Line Output Select)
0: Power Save Mode (default)
1: Normal Operation
When SLPSN bit is “0”, Stereo line output is in power-save mode. In this mode, the LOUT/ROUT
pins output 1.5V or 1.3V. When PMSL bit = “1”, SLPSN bit is enabled. After the PDN pin is set to
“L”, Stereo line output is in power-down mode since PMSL bit is “0”.
016001936-E-00
- 75 -
2016/03