HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 637

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

20.4.8
EP3o Isochronous Out Transfer
EP3o normal transmission
EP3o normal transmission
Data reception from host
Data reception from host
FIFO buffer switch over
FIFO buffer switch over
Indicate the status of
Indicate the status of
Out-token reception
Set internal status 1
(IFR0/EP3o TS = 1)
Modify interrupt flag
(IFR0/EP3o TS, TF)
Out-token reception
Set internal status 1
(IFR0/EP3o TF = 1)
(IFR0/EP3o TS, TF)
Modify interrupt flag
Figure 20.16 Operation of EP3o Isochronous-Out Transfer
in receive data?
SOF reception
SOF reception
receive data?
FIFO A side
FIFO B side
No error in
No error
Yes
Yes
USB function
No
No
EP4 abnormal transmission
EP4 abnormal transmission
Set internal status 1
(IFR0/EP3o TF = 1)
Set internal status 1
(IFR0/EP3o TF = 1)
FIFO B side
FIFO A side
INTN
INTN
Rev. 1.00, 02/04, page 599 of 804
Read data from endpoint
Read data from endpoint
registers H, L (TSRH, L)
registers H, L (TSRH, L)
reception data register
Read endpoint receive
packet detection flag
packet detection flag
Clear Start of Frame
Clear Start of Frame
data size register 3o
(IFR0/EP3o TS, TF)
(IFR0/EP3o TS, TF)
Read time stamp
Read time stamp
data register 3o
Read EP3o flag
data register 3o
Read EP3o flag
(IFR0/SOF = 0)
(IFR0/SOF = 0)
Read endpoint
Firmware
(EPDR3o)
(EPDR3o)
(EPSZ3o)
(EPSZ3o)
FIFO B side
FIFO A side