Audio Codec with USB Interface, Mono ... - Texas Instruments
Audio Codec with USB Interface, Mono ... - Texas Instruments
Audio Codec with USB Interface, Mono ... - Texas Instruments
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FUNCTIONAL BLOCK DIAGRAM<br />
MBIAS<br />
V IN<br />
V COM2<br />
V COM1<br />
V L<br />
OUT<br />
V R<br />
OUT<br />
FL<br />
FR<br />
MIC<br />
AMP<br />
+20/0 dB<br />
MIC<br />
BIAS<br />
HP AMP 15 mW (at 32 �)<br />
ATT 0 dB ~ –76 dB<br />
in 1 dB steps <strong>with</strong> Mute<br />
XTI<br />
6.000 MHz<br />
PGA + 30 dB ~ –12 dB<br />
in 1 dB steps<br />
�<br />
ATT 0 dB ~ –76 dB<br />
in 1 dB steps <strong>with</strong> Mute<br />
�<br />
XTO<br />
BGND<br />
V REF<br />
ADC<br />
DAC<br />
V /V /V L/V R/V<br />
CCA CCP CC CC DD<br />
PLL (x16)<br />
Selector<br />
Selector<br />
5 V to 3.3 V<br />
Voltage<br />
Regulator<br />
FIFO<br />
Analog<br />
PLL<br />
Analog<br />
PLL<br />
FIFO<br />
96 MHz Tracker<br />
AGND/ HGND/ PGND/DGND<br />
Power<br />
Manager<br />
ISO-In<br />
Endpoint<br />
Control<br />
Endpoint<br />
ISO-Out<br />
Endpoint<br />
<strong>USB</strong> Protocol<br />
Controller<br />
(SpAct ® )<br />
XCVR<br />
<strong>USB</strong> SIE<br />
PCM2912A<br />
www.ti.com.......................................................................................................................................................................................... SLES230–SEPTEMBER 2008<br />
SSPND<br />
V BUS<br />
D+<br />
D–<br />
POWER<br />
MAMP<br />
MMUTE<br />
Copyright © 2008, <strong>Texas</strong> <strong>Instruments</strong> Incorporated Submit Documentation Feedback 9<br />
Product Folder Link(s): PCM2912A<br />
PLAY<br />
REC<br />
TEST0<br />
TEST1
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