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Section 22 USB Function Module (USB)
(4)
Status Stage (Control-In)
0-byte reception from host
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.
Rev. 1.00 Mar. 12, 2008 Page 876 of 1178
REJ09B0403-0100
USB function
OUT token reception
ACK
Set EP0o reception
Interrupt request
complete flag
(IFR0.EP0o TS = 1)
End of control transfer
Figure 22.13 Status Stage (Control-In) Operation
Application
Clear EP0o reception
complete flag
(IFR0.EP0o TS = 0)
Write 1 to EP0o read
complete bit
(TRG.EP0o RDFN = 1)
End of control transfer
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