ALC5640VB 查看數據表（PDF） - Realtek Semiconductor

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ALC5640VB

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

Realtek Semiconductor 

ALC5640-VB

Datasheet

For ASRC function on Codec master mode, the Codec only support it on some conditions. These

conditions are sample rate fix at 48KHz, MCLK fix at 19.2MHz and frame rate fix at 50FS. Some

registers need to set for this mode as shown at Table 13.

Table 13. Register Settings for ASRC Function on Master Mode

Condition:

Codec as Master Mode

MCLK = 19.2MHz

Frame Rate = 50*FS

Target Sample Rate (FS) = 48KHz

Item

Register Settings

Note

I2S-1 to DAC1

MX-83 = 0x8000’h

For DAC1 playback ASRC settings

MX-84 = 0x0020’h

MX-FB = 0x0004’h

I2S-2 to DAC2

MX-83 = 0x1800’h

For DAC2 playback ASRC settings

MX-84 = 0xC000’h

MX-FB = 0x0002’h

AMIC to Stereo ADC Filter

to I2S-1

MX-83 = 0x8000’h

MX-84 = 0x0800’h

For AMIC to Stereo ADC Filter record ASRC settings

MX-FB = 0x0004’h

AMIC to Mono ADC Filter

to I2S-2

MX-83 = 0x1800’h

MX-84 = 0x3800’h

For AMIC to Mono ADC Filter record ASRC settings

MX-FA = 0x0731’h

MX-FB = 0x0002’h

DMIC1 to Stereo ADC Filter

to I2S-1

MX-83 = 0x8200’h

MX-FB = 0x0004’h

For DMIC1 to Stereo ADC Filter record ASRC settings

DMIC2 to Mono ADC Filter

to I2S-2

MX-83 = 0x1900’h

MX-84 = 0x3800’h

For DMIC2 to Mono ADC Filter record ASRC settings

MX-FA = 0x0741’h

MX-FB = 0x0002’h

Multi-Channel Audio Hub/CODEC and SounzRealTM

19

Digital Sound Effect for Mobile Devices

Rev. 0.91

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