PCM2903B datasheet(25/31 Pages) TI1

Part #	PCM2903B

Description	STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE-ENDED ANALOG INPUT/OUTPUT, AND S/PDIF

PDF	31 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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25 / 31 page

Record Sequence

D+/D–

V L

IN

V R

IN

1ms

SET_INTERFACE

AudioData

IN Token

AudioData

IN Token

AudioData

IN Token

SOF

T0259-01

Suspend and Resume Sequence

5ms

D+/D–

SSPND

Idle

Active

Suspend

T0057-02

PCM2903B

www.ti.com ........................................................................................................................................................................................... SLES228 – DECEMBER 2008

The PCM2903B starts the audio capture into the internal memory after receiving the SET_INTERFACE

command, as shown in Figure 38.

Figure 38. Record Sequence

The PCM2903B enters the suspend state after it detects a constant idle state on the USB bus (approximately

5 ms), as shown in Figure 39. While the PCM2903B enters the suspend state, the SSPND flag (pin 28) is

asserted. The PCM2903B wakes up immediately after detecting a non-idle state on the USB bus.

Figure 39. Suspend and Resume Sequence

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PCM2903B Datasheet(PDF) 25 Page - Texas Instruments

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