CM6571 Datasheet, PDF (13/63 Pages) C-Media Electronics – USB 2.0 full speed-compliant

CM6571
USB Audio Sound Chip
7 Application mode
7.1 Audio flow
7.1.1 Recording path
Functions
AEC
Input
ENC
Array
(USB side) Mic in
(DSP side) Mic in
(USB side) Mic in
(DSP side) Mic in
Dmic clk (GPIO10), Dmic
L: Mic input
data(GPIO11)
R: reference
Analog mic(XMICL, XMICR) signal
Dmic clk (DMI_CLK), Dmic
data(DMI_DAT)
Analog mic (MIC0_N/P,
MIC1_N/P)
MIC0: Mic input,
MIC1: reference
signal
Dmic clk (GPIO10), Dmic
data(GPIO11)
Analog mic(XMICL, XMICR)
L, R are for two
mic input
Dmic clk (DMI_CLK), Dmic
data(DMI_DAT)
Mic 0, 1
Analog mic(MIC0_N/P, MIC1_N/P)
Input path(Recording)
(USB side) I2S-in Dout
(ADC_DOUT)
(DSP side)Dmic
out(DMO_CLK, DMO_DAT)
(USB side) I2S-in Dout
(ADC_DOUT)
(DSP side)Dmic
out(DMO_CLK, DMO_DAT)
(DSP side) I2S
Din(I2S_DI)
(DSP side) I2S
Dout(I2S_DO)
(USB side)Dmic in(GPIO10, GPIO11)
(DSP side) I2S
Din(I2S_DI)
(DSP side) I2S
Dout(I2S_DO)
(USB side)Dmic in(GPIO10, GPIO11)
(USB side)Mic in
(DSP side) Mic in
Dmic clk(GPIO10), Dmic
data(GPIO11)
Analog mic(XMICL, XMICR)
Dmic clk (DMI_CLK), Dmic
data(DMI_DAT)
Analog mic(MIC0_N/P, MIC1_N/P)
L, R are for two
mic input
Mic 0,1
(USB side) I2S-in Dout
(ADC_DOUT)
(DSP side)Dmic
out(DMO_CLK, DMO_DAT)
(DSP side) I2S
Din(I2S_DI)
(DSP side) I2S
Dout(I2S_DO)
(USB side)Dmic in(GPIO10, GPIO11)
(USB side) I2S-in
Din (ADC_DIN)
USB
(USB side) I2S-in
Din (ADC_DIN)
USB
(USB side) I2S-in
Din (ADC_DIN)
USB
USB
USB
USB
7.1.2 playback path
Functions
surround HP USB
sound expander USB
Output
Xear sonic
USB
(USB side) I2S-out
Dout(DAC_DOUT)
output path(playback)
(DSP side)I2S Din (DSP side)I2S Dout (USB side) I2S-out
(I2S_DI)
(I2S_DO)
Din(DAC_DIN)
(USB side) I2S-out (DSP side)I2S Din (DSP side)I2S Dout (USB side) I2S-out
Dout(DAC_DOUT)
(I2S_DI)
(I2S_DO)
Din(DAC_DIN)
(USB side) I2S-out (DSP side)I2S Din (DSP side)I2S Dout (USB side) I2S-out
Dout(DAC_DOUT)
(I2S_DI)
(I2S_DO)
Din(DAC_DIN)
(USB side) analog
out(XLNOUTL/XLNOUTR)
(USB side) analog
out(XLNOUTL/XLNOUTR)
(USB side) analog
out(XLNOUTL/XLNOUTR)
parameter EQ USB
(USB side) I2S-out (DSP side)I2S Din (DSP side)I2S Dout (USB side) I2S-out
Dout(DAC_DOUT)
(I2S_DI)
(I2S_DO)
Din(DAC_DIN)
(USB side) analog
out(XLNOUTL/XLNOUTR)
Revised: Nov. 2012
Page 13 / 63
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