Rscan0Tmcp - Transmit Buffer Control Register (P = 0 To 31) - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
21.3.43 RSCAN0TMCp — Transmit Buffer Control Register (p = 0 to 31)
Access: Can be read/written in 8-bit units
Address: <RSCAN0_base> + 0250
Initial value: 00
H
Bit 7
—
Initial value 0
R/W R
Note 1.
Table 21.57
Bit Position
7 to 3
2
1
0
When the RSCAN0TMCp register meets any of the following conditions, set it to 00
• The RSCAN0TMCp register corresponds to the transmit buffer number selected by the
CFTML[3:0] bits in the RSCAN0CFCCk register (p = m × 16 + the value of CFTML[3:0] bits).
• The RSCAN0TMCp register corresponds to the transmit buffer allocated to the transmit queue by
the TXQDC[3:0] bits in the RSCAN0TXQCCm register (m = 0 or 1) (p = (m × 16 + 15) to (m ×
16 + 15 - the value of TXQDC[3:0] bits)).
Bits in the RSCAN0TMCp register are all cleared to 0 in channel reset mode. Modify the
RSCAN0TMCp register in channel communication mode or channel halt mode.
TMOM Bit
Setting this bit to 1 enables one-shot transmission. When transmission fails, retransmission defined in
the CAN protocol is not performed.
Modify the TMOM bit when the TMTRM flag in the RSCAN0TMSTSp register is set to 0. Set the
TMOM bit to 1 together with the TMTR bit.
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
+ (01 × p)
H H
6 5
— —
0 0
R R
The only effective value for writing to this bit is 1, which sets the bit. Otherwise writing to the bit results in
retention of its state.
RSCAN0TMCp register contents
Bit Name Function
Reserved These bits are always read as 0. The write value should always be 0.
TMOM One-Shot Transmission Enable
0: One-shot transmission is disabled.
1: One-shot transmission is enabled.
TMTAR Transmit Abort Request
0: Transmit abort is not requested.
1: Transmit abort is requested.
TMTR Transmit Request
0: Transmission is not requested.
1: Transmission is requested.
4 3
— — TMOM
0 0
R R R/W
21. CAN Interface
2 1 0
TMTAR TMTR
0 0 0
1
R/W* R/W*
.
H
1
21-87