SH7763 Datasheet, PDF (1636/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 36 USB Function Controller (USBF)
36.5 EP4 Isochronous-Out Transfer
USB function
SOF reception
FIFO buffer switch over
INTN (SOF)
Out-token reception
Data reception from host
FIFO A side
No errorin
receive data?
No
Yes
Set EP4 normal
reception flag to 1
(IFR3/EP4 TS = 1)
Set EP4 abnormal
reception flag to 1
(IFR3/EP4 TF = 1)
SOF reception
FIFO buffer switch over
INTN (SOF)
Out-token reception
Data reception from host
FIFO B side
No errorin
receive data?
No
Yes
Set EP4 normal
reception flag to 1
(IFR3/EP4 TS = 1)
Set EP4 abnormal
reception flag to 1
(IFR3/EP4 TF = 1)
Firmware
Clear SOF packet
detection flag
(IFR2/SOF = 0)
Read time stamp
register H, L(TSRH,TSRL)
No
Time stamps
match?
Yes
To figure
36.14
A
FIFO B side
Read EP4 flag
(IFR3/EP4 TS, EP4 TF)
Read EP4
receive data size register
(EPSZ4)
Read data
from EP4 data register
(EPDR4)
Clear SOF packet
detection flag
(IFR2/SOF = 0)
Read time stamp
register H, L(TSRH,TSRL)
No
Time stamps
match?
To figure
36.14
A
Yes
FIFO A side
Read EP4 flag
(IFR3/EP4 TS, EP4 TF)
Read EP4
receive data size register
(EPSZ4)
Read data
from EP4 data register
(EPDR4)
Figure 36.13 EP4 Isochronous-Out Transfer Operation (SOF is Normal)
Rev. 1.00 Oct. 01, 2007 Page 1570 of 1956
REJ09B0256-0100