AK4373 Datasheet, PDF (73/98 Pages) Asahi Kasei Microsystems – Low Power Stereo DAC with HP/SPK-Amp

[AK4373]
■ Register Definitions
Addr Register Name
D7
D6
D5
D4
D3
D2
D1
D0
00H Power Management 1
0
PMVCM PMMIN PMSPK
0
PMDAC
0
0
Default
0
0
0
0
0
0
0
0
PMDAC: DAC Power Management
0: Power-down (default)
1: Power-up
PMSPK: Speaker-Amp Power Management
0: Power-down (default)
1: Power-up
PMMIN: MIN Input Power Management
0: Power-down (default)
1: Power-up
The PMMIN bit must be set to “1” at the same time when the PMHPL bit, PMHPR bit or PMSPK bit is set to
“1”.
PMVCM: VCOM Power Management
0: Power-down (default)
1: Power-up
When any blocks are powered-up, the PMVCM bit must be set to “1”. The PMVCM bit can be set to “0” only
when all power management bits of 00H, 01H and MCKO bits are “0”.
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 of the setting of this address. In this case, register is initialized to the default
value.
When all power management bits are “0” in the 00H, 01H addresses and MCKO bit is “0”, all blocks are
powered-down. The register values remain unchanged. The register values remain unchanged. Power supply current
is 20μA(typ) in this case. For fully shut down (typ. 1μA), PDN pin must be “L”.
When DAC is not used, external clocks may not be present. When DAC is used, external clocks must always be
present.
MS0991-E-00
- 73 -
2008/09