ak4368 AKM Semiconductor, Inc., ak4368 Datasheet - Page 51

• Manufacturer Part Number: ak4368
• Description: Dac With Built-in Pll & Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
MS0529-E-00
Addr
Addr
00H
01H
Register Definitions
PMVCM: Power Management for VCOM Block
PMDAC: Power Management for DAC Blocks
PMHPL: Power Management for the left channel of the headphone-amp
PMHPR: Power Management for the right channel of the headphone-amp
MUTEN: Headphone Amp Mute Control
PMLO: Power Management for Stereo Output
PMPLL: Power Management for PLL
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, PMPLL 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”.
FS3-0: Select Sampling Frequency
PLL3-0: Select MCKI Frequency
Register Name
Power Management
Register Name
PLL Control
Default
Default
0: Power OFF (Default)
1: Power ON
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).
0: Power OFF (Default). HPL pin goes to HVSS(0V).
1: Power ON
0: Power OFF (Default). HPR pin goes to HVSS(0V).
1: Power ON
0: Mute (Default). HPL and HPR pins go to HVSS(0V).
1: Normal operation. HPL and HPR pins go to 0.475 x AVDD.
0: Power OFF (Default) LOUT/ROUT pins go to Hi-Z.
1: Power ON
0: Power OFF: EXT mode (Default)
1: Power ON: PLL mode
PLL mode: Table 2
EXT mode: Table 6
PLL mode: Note 26. Type 1-4 frequency is indicated in Table 2.
Table 1
EXT mode: Disable
R/W
R/W
R/W
FS3
RD
D7
D7
0
0
1
PMPLL
R/W
R/W
FS2
D6
D6
0
0
PMLO
- 51 -
R/W
R/W
FS1
D5
D5
0
0
MUTEN
R/W
R/W
FS0
D4
D4
0
0
PMHPR
PLL3
R/W
R/W
D3
D3
0
0
PMHPL
PLL2
R/W
R/W
D2
D2
0
0
PMDAC
PLL1
R/W
R/W
D1
D1
0
0
[AK4368EG]
PMVCM
2006/07
PLL0
R/W
R/W
D0
D0
0
0