Rscan0Cfstsk - Transmit/Receive Fifo Buffer Status Register (K = 0 To 5) - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
21.3.31 RSCAN0CFSTSk — Transmit/receive FIFO buffer Status Register (k = 0 to 5)
Access: Can be read/written in 8-, 16-, and 32-bit units
Address: <RSCAN0_base> + 0178
Initial value: 0000 0000
Bit 31 30 29
— — —
Initial value 0 0 0
R/W R R R
Bit 15 14 13
0 0 0
Initial value
R/W R R R
Note 1.
Table 21.45
Bit Position
31 to 16
15 to 8
7 to 5
4
3
2
1
0
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
+ (k * 0004 )
H H
H
28 27 26
— — —
0 0 0
R R R
12 11 10
CFMC[7:0]
0 0 0
R R R
The only effective value for writing to this flag bit is 0, which clears the bit. Otherwise writing to the bit results
in retention of its state.
RSCAN0CFSTSk register contents
Bit Name Function
Reserved These bits are always read as 0. The write value should always be 0.
CFMC[7:0] Transmit/Receive FIFO Message Counter
The number of messages stored in the transmit/receive FIFO buffer.
Reserved These bits are always read as 0. The write value should always be 0.
CFTXIF Transmit/Receive FIFO Transmit Interrupt Request Flag
CFRXIF Transmit/Receive FIFO Receive Interrupt Request Flag
CFMLT Transmit/Receive FIFO Message Lost Flag
CFFLL Transmit/Receive FIFO Buffer Full Status Flag
CFEMP Transmit/Receive FIFO Buffer Empty Status Flag
25 24 23 22
— — — —
0 0 0 0
R R R R
9 8 7 6
— —
0 0 0 0
R R R R
0: No transmit/receive FIFO transmit interrupt request is present.
1: A transmit/receive FIFO transmit interrupt request is present.
0: No transmit/receive FIFO receive interrupt request is present.
1: A transmit/receive FIFO receive interrupt request is present.
0: No transmit/receive FIFO message is lost.
1: A transmit/receive FIFO message is lost.
0: The transmit/receive FIFO buffer is not full.
1: The transmit/receive FIFO buffer is full.
0: The transmit/receive FIFO buffer contains messages.
1: The transmit/receive FIFO buffer contains no message (buffer empty).
21. CAN Interface
21 20 19 18
— — — —
0 0 0 0
R R R R
5 4 3 2
— CFTXIF CFRXIF CFMLT CFFLL CFEMP
0 0 0 0
1 1 1
R R/W* R/W* R/W*
17 16
— —
0 0
R R
1 0
0 1
R R
21-70