Renesas RL78/F14 - Cani Transmit;Receive FIFO Access Register Kah (Cfidhk) (I = 0) (K = 0)

RL78/F13, F14 CHAPTER 18 CAN INTERFACE (RS-CAN LITE)
R01UH0368EJ0210 Rev.2.10 1346
Dec 10, 2015
18.3.50 CANi Transmit/Receive FIFO Access Register kAH (CFIDHk) (i = 0) (k = 0)
Address CFIDH0L: F05E2H, CFIDH0H: F05E3H
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
CFIDE CFRTR THLEN CFID[28:16]
After Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit Symbol Bit Name Description R/W
15 CFIDE Transmit/Receive FIFO Buffer
IDE
0: Standard ID
1: Extended ID
R/W
14 CFRTR Transmit/Receive FIFO Buffer
RTR
0: Data frame
1: Remote frame
R/W
13 THLEN Transmit History Data Store
Enable
This bit is valid only when the CFM[1:0] value is B'01
(transmit mode).
0: Transmit history data is not stored in the buffer.
1: Transmit history data is stored in the buffer.
R/W
12 to 0 CFID[28:16] Transmit/Receive FIFO Buffer
ID Data H
When CFM[1:0] value is B'01 (transmit mode):
Set standard ID or extended ID. For standard ID, write 0 to
these bits.
When CFM[1:0] value is B'00 (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
Modify these bits only when the CFM[1:0] value in the CFCCHk register is B'01 (transmit mode). This register is
readable only when the CFM[1:0] value is B'00 (receive mode).
This register can be read/written when the RPAGE bit in the GRWCR register is 1.
• CFIDE Bit
This bit indicates the ID format (standard ID or extended ID) of the received message stored in the
transmit/receive FIFO buffer when the CFM[1:0] value is B'00. When the CFM [1:0] value is B'01, set the ID
format of the message to be transmitted from the transmit/receive FIFO buffer.
• CFRTR Bit
This bit indicates the data format (data frame or remote frame) of the received message stored in the
transmit/receive FIFO buffer when the CFM [1:0] value is B'00. When the CFM [1:0] value is B'01, set the data
format of the message to be transmitted from the transmit/receive FIFO buffer.
• THLEN Bit
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 CFM [1:0] value is B'01 (transmit mode).
• CFID[28:16] Bits
These bits indicate the ID of the received message stored in the transmit/receive FIFO buffer when the CFM
[1:0] value is B'00.
When the CFM[1:0] value is B'01, set the ID of the message to be transmitted from the transmit/receive FIFO
buffer.