Rscan0Tmptrp - Transmit Buffer Pointer Register (P= 0 To 31) - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
21.3.51 RSCAN0TMPTRp — Transmit Buffer Pointer Register (p= 0 to 31)
Access: Can be read/written in 8-, 16-, and 32-bit units
Address: <RSCAN0_base> + 1004
Initial value: 0000 0000
Bit 31 30 29
TMDLC[3:0]
Initial value 0 0 0
R/W R/W R/W R/W
Bit 15 14 13
— — —
0 0 0
Initial value
R/W R R R
Table 21.70
Bit Position
31 to 28
27 to 24
23 to 16
15 to 0
Modify this register when the TMTRM bit in the corresponding RSCAN0TMSTSp register is set to 0
(no transmit request is present). If this register is linked to a transmit/receive FIFO buffer, do not write
to this register. If this register is allocated to the transmit queue, only write to a transmit buffer p (p = m
× 16 + 15) for the corresponding channel.
TMDLC[3:0] Bits
These bits are used to set the data length of the message to be transmitted from the transmit buffer
when the TMRTR bit in the RSCAN0TMIDp register is set to 0 (data frame). If the data length is set to
9 bytes or more, the transmit data is 8 bytes long.
When the TMRTR bit is set to 1 (remote frame), set the data length of messages to be requested.
TMPTR[7:0] Bits
When message transmission has been completed, the TMPTR[7:0] value is stored in the transmit
history buffer.
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
+ (p * 0010 )
H H
H
28 27 26
— —
0 0 0
R/W R R
12 11 10
— — —
0 0 0
R R R
RSCAN0TMPTRp register contents
Bit Name Function
TMDLC[3:0] Transmit Buffer DLC Data
b31 b30 b29 b28
Reserved These bits are always read as 0. The write value should always be 0.
TMPTR[7:0] Transmit Buffer Label Data
Set the label information to be stored in the transmit history buffer.
Reserved These bits are always read as 0. The write value should always be 0.
25 24 23 22
— —
0 0 0 0
R R R/W R/W
9 8 7 6
— — — —
0 0 0 0
R R R R
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
21. CAN Interface
21 20 19 18
TMPTR[7:0]
0 0 0 0
R/W R/W R/W R/W
5 4 3 2
— — — —
0 0 0 0
R R R R
17 16
0 0
R/W R/W
1 0
— —
0 0
R R
21-97