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4. Status Stage (Control-In)
USB function
Application
OUT token reception
0-byte reception from host
End of control transfer
Set EP0o reception
complete flag
(IFR0.EP0o TS = 1)
Clear EP0o reception
complete flag
(IFR0.EP0o TS = 0)
Write 1 to EP0o read
complete bit
(TRG.EP0o RDFN = 1)
End of control transfer
ACK
Interrupt request
Figure 18.8 Status Stage (Control-In) Operation
The control-in status stage starts with an OUT token from the host. The application receives 0-byte
data from the host, and ends control transfer.
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