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15.2.7
Transmit Acknowledge Register (TXACK)
The transmit acknowledge register (TXACK) is a 16-bit readable/writable register containing
status flags that indicate normal transmission of mailbox (buffer) transmit messages.
TXACK
Bit:
Initial value:
R/W:
Bit:
TXACK15 TXACK14 TXACK13 TXACK12 TXACK11 TXACK10 TXACK9 TXACK8
Initial value:
R/W:
Note: * Only a write of 1 is permitted, to clear the flag.
Bits 15 to 9 and 7 to 0—Transmit Acknowledge Register: These bits indicate that a transmit
message in the corresponding HCAN mailbox has been transmitted normally.
Bit x: TXACKx
0
1
Bit 8—Reserved: This bit always reads 0. The write value should always be 0.
15
14
TXACK7
TXACK6 TXACK5
0
0
R/(W)*
R/(W)*
R/(W)*
7
6
0
0
R/(W)*
R/(W)*
R/(W)*
Description
[Clearing condition]
Writing 1
Completion of message transmission for corresponding mailbox
13
12
11
TXACK4 TXACK3
0
0
0
R/(W)*
R/(W)*
5
4
3
0
0
0
R/(W)*
R/(W)*
10
9
TXACK2
TXACK1
0
0
R/(W)*
R/(W)*
2
1
0
0
R/(W)*
R/(W)*
R/(W)*
(Initial value)
(x = 15 to 0)
8
—
0
—
0
0
543
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