AK4371 Datasheet, PDF (49/62 Pages) Asahi Kasei Microsystems – DAC with built-in PLL & HP-AMP

[AK4371]
■ Register Definitions
Addr
00H
Register Name
Power Management 0
R/W
Default
D7
PMVREF
R/W
0
D6
PMPLL
R/W
0
D5
PMLO
R/W
0
D4
MUTEN
R/W
0
D3
PMHPR
R/W
0
D2
PMHPL
R/W
0
D1
PMDAC
R/W
0
D0
PMVCM
R/W
0
PMVCM: Power Management for VCOM Block
0: Power OFF (default)
1: Power ON
PMDAC: Power Management for DAC Blocks
0: Power OFF (default)
1: Power ON
When the PMDAC bit is changed from “0” to “1”, the DAC is powered-up to the current register values
(ATT value, sampling rate, etc).
PMHPL: Power Management for the left channel of the headphone-amp
0: Power OFF (default). HPL pin goes to VSS1(0V).
1: Power ON
PMHPR: Power Management for the right channel of the headphone-amp
0: Power OFF (default). HPR pin goes to VSS1(0V).
1: Power ON
MUTEN: Headphone Amp Mute Control
0: Mute (default). HPL and HPR pins go to VSS1(0V).
1: Normal operation. HPL and HPR pins go to 0.475 x AVDD.
PMLO: Power Management for Stereo Output
0: Power OFF (default) LOUT/ROUT pins go to Hi-Z.
1: Power ON
PMPLL: Power Management for PLL
0: Power OFF: EXT mode (default)
1: Power ON: PLL mode
PMVREF: Power Management for VREF
0: Power OFF (default)
1: Power ON
Each block can be powered-down respectively by writing “0” in each bit of this address. When the PDN pin is “L”,
all blocks are powered-down regardless as setting of this address. In this case, register is initialized to the default
value.
When PMVCM, PMDAC, PMHPL, PMHPR, PMLO, PMMO, PMPLL, PMVREF and MCKO bits are “0”, all
blocks are powered-down. The register values remain unchanged. Power supply current is 20μA(typ) in this case.
For fully shut down (typ. 1μA), PDN pin should be “L”.
MS0596-E-00
- 49 -
2007/04