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USB OTG Controller
Figure 53.
GPIO Interrupt Handler Support for OTG Transceiver Interrupt Input
GPIO interrupt handler
Non-blocking OTG
Yes
transceiver status read via
GPIO interrupt from OTG
I 2 C
transceiver?
No
Handle other GPIO
interrupt soruces
Clear GPIO interrupt
End of GPIO interrupt handler
The operations in Figure 54 show the non-blocking OTG transceiver status
read and update to the OTG controller registers. To reduce the effect on
2
system performance, it is important that the I
C read operations are
non-blocking.
SPRU761A
Universal Serial Bus (USB)
235
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