Renesas RL78 Series - CAN Receive FIFO Access Register Mbh (Rfptrm) (M = 0, 1)

RL78/F13, F14 CHAPTER 18 CAN INTERFACE (RS-CAN LITE)
R01UH0368EJ0210 Rev.2.10 1333
Dec 10, 2015
18.3.40 CAN Receive FIFO Access Register mBH (RFPTRm) (m = 0, 1)
Address RFPTR0L: F05A6H, RFPTR0H: F05A7H
RFPTR1L: F05B6H, RFPTR1H: F05B7H
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
RFDLC[3:0] RFPTR[11:0]
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 to 12 RFDLC[3:0] Receive FIFO Buffer DLC Data
b15 b14 b13 b12
0 0 0 0 : 0 data bytes
0 0 0 1 : 1 data byte
0 0 1 0 : 2 data bytes
0 0 1 1 : 3 data bytes
0 1 0 0 : 4 data bytes
0 1 0 1 : 5 data bytes
0 1 1 0 : 6 data bytes
0 1 1 1 : 7 data bytes
1 X X X : 8 data bytes
R
11 to 0 RFPTR[11:0] Receive FIFO Buffer Label Data Label information of the received message can be read. R
This register can be read when the RPAGE bit in the GRWCR register is 1.
• RFDLC[3:0] Bits
These bits indicate the data length of the message stored in the receive FIFO buffer.
• RFPTR[11:0] Bits
These bits indicate the label information of the message stored in the receive FIFO buffer.