AK4563A Datasheet, PDF (18/39 Pages) Asahi Kasei Microsystems – Low Power 16bit 4ch ADC & 2ch DAC with ALC

ASAHI KASEI
[AK4563A]
PM4: Power control of DAC
PM5: Used both as power control of analog loopback circuit and as selection of MUX. (0: DAC, 1:
Analog loopback)
When PM5 goes “1”, input for output-AMP is selected to analog loopback circuit from DAC
output. Output MUX and AMP are powered-down when PDN = “L” or PM4 = PM5 = “0”.
The loopback output and the MUX selecting DAC output is a MIXER with the switch in
practice. Therefore, when both PM4 and PM5 select ON, the analog loopback signal and DAC
output are mixed by Gain 1.
PM5-0 bits can be partially powered-down by ON/OFF (“1”/ “0”) of PM5-0 bits. When PDN pin
goes “L”, all the circuit in AK4563A can be powered-down regardless of PM5-0 bits.
When the AK4563A is powered-down by PM5-0 bits, contents of registers are kept.
However IPGA gain is reset when PM1-0 bits are “00”. (refer to “Operation of IPGA”
description)
VCOM circuit is powered-down when PM bit is all “0”.
MCLK, BCLK and LRCK should not stopped except the case of PM0 = PM1 = PM2 = PM3 =
PM4 = PM5 = “0” or PDN= “L”.
MS0067-E-02
- 18 -
2004/12