SH7641 Datasheet, PDF (822/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 20 USB Function Module
Status Stage (Control-IN): 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.
USB function
OUT token reception
Application
0-byte reception from host
ACK
Set EP0o reception
complete flag
(USBIFR0/EP0o TS = 1)
Interrupt request
Clear EP0o reception
complete flag
(USBIFR0/EP0o TS = 0)
End of control transfer
Write 1 to EP0o read
complete bit
(USBTRG/EP0o RDFN = 1)
End of control transfer
Figure 20.8 Status Stage (Control-IN) Operation
Rev. 4.00 Sep. 14, 2005 Page 772 of 982
REJ09B0023-0400