Figure 15.15 Status Stage Operation (Control-In) - Hitachi H8S/2215 Series Hardware Manual

(4) Status Stage (Control-In)
The control-in status stage starts with an OUT token from the host. The firmware receives 0-
byte data from the host, and ends control transfer.
USB function
OUT token reception
0-byte reception from host
Set EP0o reception
complete flag
(UIFR0/EP0o TS = 1)
End of control transfer
ACK

Figure 15.15 Status Stage Operation (Control-In)

Firmware
Clear EP0o reception
complete flag
(UIFR0/EP0o TS = 0)
Write 1 to EP0o read
complete bit
(UTRG0/EP0o RDFN = 1)
End of control transfer
Rev. 3.0, 10/02, page 497 of 686