Datasheet

Suspend and Resume Sequence
5ms
D+(pin4),
D (pin3)-
V L (pin18),
V R(pin22)
OUT
OUT
SSPND (pin29)
2.5ms
Active
Suspend
Idle
Active
PCM2912A
www.ti.com .......................................................................................................................................................................................... SLES230 – SEPTEMBER 2008
The PCM2912A enters a suspend state when it sees a constant idle state on the USB bus after approximately 5
ms. When the PCM2912A enters the suspend state, the SSPND flag (pin 29) is asserted. The PCM2912A wakes
up immediately after detecting the non-idle state on the USB bus. Figure 36 illustrates these actions.
Figure 36. Suspend and Resume
Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 25
Product Folder Link(s): PCM2912A