AK4563A データシートの表示（PDF） - Asahi Kasei Microdevices

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AK4563A

Low Power 16bit 4ch ADC & 2ch DAC with ALC

Asahi Kasei Microdevices 

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

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