ALC5640CG 데이터 시트보기 (PDF) - Realtek Semiconductor

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ALC5640CG

Multi-Channel Audio Hub/CODEC and SounzReal Digital Sound Effect for Mobile Devices

Realtek Semiconductor 

7. Function Description

ALC5640-VB

Datasheet

7.1. Power

There are different power types in ALC5640. DBVDD is for digital I/O power, DCVDD is for digital

core power, AVDD and DACREF are for analog power, CPVDD is for charge pump power, MICVDD is

for MICBIAS power and SPKVDD is for speaker amplifier power.

The power supplier limit condition are DBVDD ≧ DCVDD and SPKVDD ≧ MICVDD > AVDD =

DACREF = CPVDD, AVDD ≧ DCVDD, and for the best performance, our design setting is show on

below.

Power

Setting

Table 5. Power Supply for Best Performance

DBVDD DCVDD AVDD DACREF CPVDD

1.8V

1.2V

1.8V

1.8V

1.8V

MICVDD SPKVDD

3.3V

5.0V

*1.2V DCVDD can be generated by internal LDO or supplied by external 1.2V power.

To prevent all power down leakage, there are two settings for power supply. At these conditions, the

leakage will be smaller. First setting is to power on all power pin. Second setting is to only power on

SPKVDD and others are removed. The detail setting is shown as following table.

Power

Table 6. Power Supply Condition for Power Down Leakage

DBVDD DCVDD AVDD DACREF CPVDD MICVDD SPKVDD

Setting-1

Setting-2

Supplied

N/A

Supplied

(or N/A)*

N/A

Supplied

N/A

Supplied

N/A

Supplied

N/A

Supplied

(or N/A)*

N/A

Supplied

Supplied

Setting-3

Supplied Supplied Supplied Supplied Supplied Supplied

N/A

(or N/A)*

(or N/A)*

“*” means DCVDD or MICVDD can be supplied by internal LDO and need to turn off when into power down mode.

Multi-Channel Audio Hub/CODEC and SounzRealTM

11

Digital Sound Effect for Mobile Devices

Rev. 0.91

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