r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1636

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

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