Users Manual

R01UH0823EJ0110 Rev.1.10 Page 1246 of 1852
Nov 30, 2020
RX23W Group 36. CAN Module (RSCAN)
36.2.50 Transmit/Receive FIFO Access Register 0AH (CFIDH0)
Modify this register only when the CFCCH0.CFM[1:0] value is 01b (transmit mode).
This register is readable only when the CFCCH0.CFM[1:0] value is 00b (receive mode).
This register can be read/written when the GRWCR.RPAGE bit is 1.
CFID[28:16] Bits (Transmit/Receive FIFO Buffer ID Data H)
These bits indicate the ID of the received message stored in the transmit/receive FIFO buffer when the
CFCCH0.CFM[1:0] value is 00b.
When the CFCCH0.CFM[1:0] value is 01b, set the ID of the message to be transmitted from the transmit/receive FIFO
buffer.
THLEN Bit (Transmit History Data Store Enable)
When this bit is set to 1, the transmit history data (label information, buffer number, and buffer type) of transmit
messages is stored in the transmit history buffer after transmission is completed.
This bit is enabled when the CFCCH0.CFM[1:0] value is 01b (transmit mode).
CFRTR Bit (Transmit/Receive FIFO Buffer RTR)
This bit indicates the data format (data frame or remote frame) of the received message stored in the transmit/receive
FIFO buffer when the CFCCH0.CFM[1:0] value is 00b. When the CFCCH0.CFM[1:0] value is 01b, set the data format
of the message to be transmitted from the transmit/receive FIFO buffer.
CFIDE Bit (Transmit/Receive FIFO Buffer IDE)
This bit indicates the ID format (standard ID or extended ID) of the received message stored in the transmit/receive FIFO
buffer when the CFCCH0.CFM[1:0] value is 00b. When the CFCCH0.CFM[1:0] value is 01b, set the ID format of the
message to be transmitted from the transmit/receive FIFO buffer.
Address(es): RSCAN0.CFIDH0 000A 85E2h
b15b14b13b12b11b10b9b8b7b6b5b4b3b2b1b0
CFIDE CFRTR THLEN CFID[28:16]
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b12 to b0 CFID[28:16] Transmit/Receive FIFO Buffer
ID Data H
When CFCCH0.CFM[1:0] value is 01b (transmit mode):
Set standard ID or extended ID. For standard ID, write 0 to
these bits.
When CFCCH0.CFM[1:0] value is 00b (receive mode):
Standard ID or extended ID in the received message can be
read. For standard ID, these bits are read as 0.
R/W
b13 THLEN Transmit History Data Store
Enable
This bit is valid only when the CFCCH0.CFM[1:0] value is
01b (transmit mode).
0: Transmit history data is not stored in the buffer.
1: Transmit history data is stored in the buffer.
R/W
b14 CFRTR Transmit/Receive FIFO Buffer
RTR
0: Data frame
1: Remote frame
R/W
b15 CFIDE Transmit/Receive FIFO Buffer
IDE
0: Standard ID
1: Extended ID
R/W