ALC5642-VF
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
MX-83 = 0x8000’h
MX-84 = 0x0020’h
MX-FB = 0x0004’h
MX-83 = 0x1800’h
MX-84 = 0xC000’h
MX-FB = 0x0002’h
MX-83 = 0x8000’h
MX-84 = 0x0800’h
MX-FB = 0x0004’h
MX-83 = 0x1800’h
MX-84 = 0x3800’h
MX-FA = 0x0731’h
MX-FB = 0x0002’h
MX-83 = 0x8200’h
MX-FB = 0x0004’h
MX-83 = 0x1900’h
MX-84 = 0x3800’h
MX-FA = 0x0741’h
MX-FB = 0x0002’h
Note
I2S-1 to DAC1
For DAC1 playback ASRC settings
I2S-2 to DAC2
For DAC2 playback ASRC settings
AMIC to Stereo ADC Filter
to I2S-1
For AMIC to Stereo ADC Filter record ASRC settings
For AMIC to Mono ADC Filter record ASRC settings
AMIC to Mono ADC Filter
to I2S-2
DMIC1 to Stereo ADC Filter
to I2S-1
For DMIC1 to Stereo ADC Filter record ASRC settings
For DMIC2 to Mono ADC Filter record ASRC settings
DMIC2 to Mono ADC Filter
to I2S-2
Multi-Channel Audio Hub/CODEC with embedded Voice
DSP and SounzRealTM Digital Sound Effect
19
Rev. 0.93
REALTEK [ Realtek Semiconductor Corp. ]
