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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PCM2912A<br />
SLES230–SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com<br />
Play, Stop, and Detach Sequence<br />
When the host finishes or aborts the play back process, the PCM2912A stops playing after last audio data has<br />
played, as shown in Figure 34.<br />
V (pin 2)<br />
BUS<br />
D+ (pin 4),<br />
D � (pin 3)<br />
VOUTL (pin 18),<br />
VOUTR (pin 22)<br />
Record Sequence<br />
D+ (pin 4),<br />
D– (pin 3)<br />
V (pin 16)<br />
IN<br />
<strong>Audio</strong> Data <strong>Audio</strong> Data Last <strong>Audio</strong> Data<br />
SOF SOF SOF SOF SOF<br />
1ms<br />
1 ms<br />
SET_INTERFACE<br />
SOF SOF<br />
Figure 34. Play, Stop, and Detach<br />
Figure 35 illustrates how the PCM2912A records the audio into the internal memory after receiving the<br />
SET_INTERFACE command.<br />
IN token<br />
<strong>Audio</strong> data<br />
SOF<br />
IN token<br />
Figure 35. Record Sequence<br />
<strong>Audio</strong> data<br />
SOF<br />
IN token<br />
<strong>Audio</strong> data<br />
24 Submit Documentation Feedback Copyright © 2008, <strong>Texas</strong> <strong>Instruments</strong> Incorporated<br />
Product Folder Link(s): PCM2912A<br />
SOF<br />
Detach
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