Datasheet

D+/D–
V L
IN
V R
IN
1ms
SET_INTERFACE
AudioData
IN Token
AudioData
IN Token
AudioData
IN Token
SOF SOF SOF SOF SOF
T0259-01
5ms
D+/D–
SSPND
Idle
Active Active
Suspend
T0057-02
PCM2906C
www.ti.com SBFS037 –NOVEMBER 2011
Record Sequence
The PCM2906C starts audio capture into the internal memory after receiving the SET_INTERFACE command,
as shown in Figure 34.
Figure 34. Record Sequence
Suspend and Resume Sequence
The PCM2906C enters the suspend state after a constant idle state on the USB bus (approximately 5 ms), as
shown in Figure 35. While the PCM2906C enters the suspend state, the SSPND flag (pin 28) is asserted. The
PCM2906C wakes up immediately upon detecting a non-idle state on the USB.
Figure 35. Suspend and Resume Sequence
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Product Folder Link(s): PCM2906C