AK4951AEN Datasheet, PDF (73/105 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4951A]
■ Register Definitions
Addr Register Name
D7
D6
D5
D4
00H Power Management 1 PMPFIL PMVCM PMBP
0
R/W
R/W
R/W
R/W
R
Default
0
0
0
0
D3
D2
D1
D0
0
PMDAC PMADR PMADL
R
R/W
R/W
R/W
0
0
0
0
PMADL: Microphone Amplifier Lch and ADC Lch Power Management
0: Power-down (default)
1: Power-up
When the PMADL or PMADR bit is changed from “0” to “1”, the initialization cycle (1059/fs =
22ms @48kHz, ADRST1-0 bits = “00”) starts. After initializing, digital data of the ADC is output.
PMADR: Microphone Amplifier Rch and ADC Rch Power Management
0: Power-down (default)
1: Power-up
When the PMADL or PMADR bit is changed from “0” to “1”, the initialization cycle (1059/fs =
22ms @48kHz, ADRST1-0 bits = “00”) starts. After initializing, digital data of the ADC is output.
PMDAC: DAC Power Management
0: Power down (default)
1: Power up
PMBP: BEEP Input Select and Power Management
0: Power down (RIN3 pin) (default)
1: Power up (BEEP pin)
PMVCM: VCOM and Regulator (2.3V) Power Management
0: Power down (default)
1: Power up
PMPFIL: Programmable Filter Block Power Management
0: Power down (default)
1: Power up
The AK4951A can be powered down by writing “0” to the address “00H” and PMPLL, PMMP,
PMHPL, PMHPR, PMSL, PMDML, PMDMR and PMOSC bits. In this case, register values are
maintained.
016001936-E-00
- 73 -
2016/03