SH7763 Datasheet, PDF (1640/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 36 USB Function Controller (USBF)
USB function
SOF reception
INTN (Time out)
Firmware
Clear time out flag
(IFR4/TMOUT = 0)
In-token reception
No valid data
in EP5 FIFO
0-byte data
transmission to host
SOF reception
FIFO buffer
switch over
In-token reception
No valid data
in EP5 FIFO
0-byte data
transmission to host
FIFO A side
Set EP5 transmit
request flag
(IFR3/EP5 TR = 1)
0-byte data
transmission
FIFO B side
Write 1 to EP5
CPU clear
(FCLR1/EP5CCLR)
INTN (FIFO)
From
figure 36.15
B
Clear SOF packet detection
flag (IFR2/SOF = 0)
Read time stamp register
H, L (TSRH, TSRL)
Time stamps do not match
FIFO B side
Set EP5 transmit
request flag
(IFR3/EP5 TR = 1)
0-byte data
transmission
FIFO A side
Write one packet
of data to EP5 data
register (EPDR5)
Figure 36.16 EP5 Isochronous-In Transfer Operation (SOF in Broken)
Rev. 1.00 Oct. 01, 2007 Page 1574 of 1956
REJ09B0256-0100