Renesas RX Series

R01UH0823EJ0100 Rev.1.00 Page 1242 of 1823
Jul 31, 2019
RX23W Group 36. CAN Module (RSCAN)
36.2.55 Transmit/Receive FIFO Access Register 0DL (CFDF20)
Modify this register only when the CFCCH0.CFM[1:0] value is 01b.
This register is readable only when the CFCCH0.CFM[1:0] value is 00b. When the CFPTR0.CFDLC[3:0] value is
smaller than 1000b, data bytes for which no data is set are read as 00h.
This register can be read/written when the GRWCR.RPAGE bit is 1.
36.2.56 Transmit/Receive FIFO Access Register 0DH (CFDF30)
Modify this register only when the CFCCH0.CFM[1:0] value is 01b.
This register is readable only when the CFCCH0.CFM[1:0] value is 00b. When the CFPTR0.CFDLC[3:0] value is
smaller than 1000b, data bytes for which no data is set are read as 00h.
This register can be read/written when the GRWCR.RPAGE bit is 1.
Address(es): RSCAN0.CFDF20 000A 85ECh
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
CFDB5[7:0] CFDB4[7:0]
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b7 to b0 CFDB4[7:0] Transmit/Receive FIFO Buffer
Data Byte 4
When CFCCH0.CFM[1:0] value is 01b (transmit mode):
Set the transmit/receive FIFO buffer data.
When CFCCH0.CFM[1:0] value is 00b (receive mode):
The message data stored in the transmit/receive FIFO buffer
can be read.
R/W
b15 to b8 CFDB5[7:0] Transmit/Receive FIFO Buffer
Data Byte 5
R/W
Address(es): RSCAN0.CFDF30 000A 85EEh
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
CFDB7[7:0] CFDB6[7:0]
Value after reset:
0000000000000000
Bit Symbol Bit Name Description R/W
b7 to b0 CFDB6[7:0] Transmit/Receive FIFO Buffer
Data Byte 6
When CFCCH0.CFM[1:0] value is 01b (transmit mode):
Set the transmit/receive FIFO buffer data.
When CFCCH0.CFM[1:0] value is 00b (receive mode):
The message data stored in the transmit/receive FIFO buffer
can be read.
R/W
b15 to b8 CFDB7[7:0] Transmit/Receive FIFO Buffer
Data Byte 7
R/W