AK4955 Datasheet, PDF (83/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

[AK4955]
■ Register Definitions
Addr
00H
Register Name
Power Management 1
R/W
Default
D7
PMPFIL
R/W
0
D6
PMVCM
R/W
0
D5
PMDSP
R/W
0
D4
PMSPK
R/W
0
D3
PMLO
R/W
0
D2
PMDAC
R/W
0
D1
PMADR
R/W
0
D0
PMADL
R/W
0
PMADL: ADC Lch Power Management
0: Power-down (default)
1: Power-up
PMADR: 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=21.3ms
@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
PMLO: Stereo Line Output Power Management
0: Power-down (default)
1: Power-up
PMSPK: Speaker-Amp Power Management
0: Power-down (default)
1: Power-up
PMDSP: DSP Power Management
0: Power-down (default)
1: Power-up
PMVCM: VCOM and Regulator (2.3V) Power Management
0: Power down (default)
1: Power up
PMPFIL: Programmable Filter Block (LPF/FIL3/EQ/5 Band EQ/ALC) Power Management
0: Power down (default)
1: Power up
The AK4955 can be powered-down by writing “0” to the address “00H” and PMPLL, PMMICL/R, PMMP,
PMBPG, PMDML/R, DMPE, PMV, PMCP and MCKO bits. In this case, register values are maintained.
MS1343-E-00
- 83 -
2011/12