r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 960

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 USB Function Module (USB)
16.3.21 Trigger Register 1 (TRG1)
TRG1 generates one-shot triggers to control the transfer sequence for each endpoint.
Rev. 1.00 Sep. 19, 2008 Page 930 of 1342
REJ09B0467-0100
Bit
7
6
5
4
3
2
1
0
Bit Name





EP3 PKTE
EP2 PKTE
EP1 RDFN
Initial
Value
0
0
0
0
0
0
0
0
R/W





W
W
W
Description
EP3 Packet Enable
EP2 Packet Enable
EP1 Read Complete
Reserved
These bits are always read as 0. The write value
should always be 0.
After one packet of data has been written to the
endpoint 3 transmit FIFO buffer, the transmit data is
fixed by writing 1 to this bit.
After one packet of data has been written to the
endpoint 2 transmit FIFO buffer, the transmit data is
fixed by writing 1 to this bit.
Write 1 to this bit after one packet of data has been
read from the endpoint 1 FIFO buffer. The endpoint 1
receive FIFO buffer has a dual-buffer configuration.
Writing 1 to this bit initializes the FIFO that was read,
enabling the next packet to be received.