Rainbow Electronics AT89C5122 - Manual (Page 113)

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AT8xC5122/23
4202E–SCR–06/06
Figure 60. Example of REMOTE WAKEUP Management
USB Controller Init
Detection of a SUSPEND state
SPINT
Set RMWUPE
Suspend management
Enable Clocks
upstream RESUME sent
UPRSM
Clear SPINT
Set SDMWUP
Clear SDRMWUP
SET_FEATURE: DEVICE_REMOTE_WAKEUP
Need USB Resume
UPRSM = 1