PCM2903C Datasheet, PDF (24/31 Pages) Texas Instruments – Stereo Audio Codec with USB Interface, Single-Ended Analog Input/Output, and S/PDIF

PCM2903C
SBFS038 – JUNE 2012
V_DD (Pin 27)
0V
SEL1 (Pin 9)
Bus Idle
D+/D–
2.5 V (Typ)
Bus Reset
Set Configuration
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3.3 V (Typ)
First Audio Data
Second Audio Data
5 V = V_BUS
(Typ)
SOF
SOF
SOF
SSPND
V_OUTL
V_OUTR
BPZ
700 ms
Internal Reset
Device Setup
1 ms
Ready for Setup
Ready for Playback
Figure 36. Power-On Under Attach
Play, Stop, and Detach Sequence
When the host finishes or aborts the playback, the PCM2903C stops playing after the last audio data have
played, as shown in Figure 37.
SEL1 (Pin 9)
Audio Data
Audio Data
Last Audio Data
5 V = V_BUS
(Typ)
D+/D–
SOF
SOF
SOF
SOF
SOF
V_OUTL
V_OUTR
1 ms
Figure 37. Play, Stop, and Detach Sequence
Detach
24
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