AK4955 Datasheet, PDF (84/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

[AK4955]
Addr
01H
Register Name
Power Management 2
R/W
Default
D7
SPPSN
R/W
0
D6
DSPSTBN
R/W
0
D5
PMBPG
R/W
0
D4
PMBP
R/W
0
D3
D2
D1
D0
M/S SUMRSTN MCKO PMPLL
R/W
R/W
R/W
R/W
0
0
0
0
PMPLL: PLL Power Management
0: EXT Mode and Power down (default)
1: PLL Mode and Power up
MCKO: Master Clock Output Enable
0: Disable: MCKO pin = “L” (default)
1: Enable: Output frequency is selected by PS1-0 bits.
SUMRSTN: Reset bit for Checksum
0: Reset the checksum value to all “0”. (default)
1: Checksum reset release.
M/S: Master / Slave Mode Select
0: Slave Mode (default)
1: Master Mode
PMBP: Mono Input Power Management
0: Power down (default)
1: Power up
Stereo lineout and speaker path settings from the MIN pin can be set by BEEPL bit and BEEPS bit, respectively.
PMBPG: BEEP Generator Power Management
0: Power down (default)
1: Power up
DSPSTBN: DSP Clock Control
0: Clock Stop (default)
1: Clock Supply
Program downloading is available when DSPSTBN bit = “1”
SPPSN: Speaker-Amp Power-Save Mode
0: Power Save Mode (default)
1: Normal Operation
When SPPSN bit is “0”, Speaker-Amp is in power-save mode. In this mode, the SPP pin goes to Hi-Z and the SPN
pin outputs SVDD/2 voltage. When PMSPK bit = “1”, SPPSN bit is enabled. After the PDN pin is set to “L”,
Speaker-Amp is in power-down mode since PMSPK bit is “0”.
MS1343-E-00
- 84 -
2011/12