AK4650 Datasheet, PDF (24/86 Pages) Asahi Kasei Microsystems – 16Bit ΔΣ CODEC with MIC/HP/SPK-AMP & TSC

[AK4650]
■ Power Management
Power management of each block is controlled via 26H and 60H register.
ADC
DAC
VCM
XTL
PLL
AC-Link
HP
SPK
MIC
Line In
AUXIN
Mono Out
BEEP
TSC
PR0 = “1”
PD
PU
PU
PU
VRA
PU
PMHPL/R
PMSPK
PMMIC
PMLIN
PMAUX
PMMO
PMBPM
PM12AD
PR1 = “1”
PU
PD
PU
PU
VRA
PU
PMHPL/R
PMSPK
PMMIC
PMLIN
PMAUX
PMMO
PMBPM
PM12AD
PR2 = “1” PR3 = “1”
PU
PD
PU
PD
PU
PD
PU
PU
VRA
PD
PU
PU(Note 38)
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PD
PM12AD
PD
Table 6. Power Management
PR4 = “1”
PD
PD
PU
PU
VRA
PD
PMHPL/R
PMSPK
PMMIC
PMLIN
PMAUX
PMMO
PMBPM
PM12AD
PR5 = “1”
PD
PD
PU
PD
PD
PD
PMHPL/R
PMSPK
PMMIC
PMLIN
PMAUX
PMMO
PMBPM
PM12AD
PR6 = “1”
PU
PU
PU
PU
VRA
PU
PD
PMSPK
PMMIC
PMLIN
PMAUX
PMMO
PMBPM
PM12AD
PD: Power Down
PU: Power Up
PM*: depends on each PM bit.
VRA
VRA bit = “1”: PLL Power Up
VRA bit = “0”: PLL Power Down
Note 38. When PLL1 pin = “H”(MCKI=3.6864MHz or 12MHz), AC-Link is powered-down by PR3 bit = “1”.
■ Digital High Pass Filter
The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is 1.0Hz @fs=48kHz
and scales with sampling rate (fs).
MS0502-E-01
- 24 -
2007/04