Transmit Acknowledge Register (Txack) - Renesas H8SX/1500 Series Hardware Manual

13.3.7

Transmit Acknowledge Register (TXACK)

TXACK indicates the normal transmission of transmit messages in mailboxes.
Bit 15
Bit Name TXACK7
Initial Value 0
R/W R/(W)*
Bit 7
Bit Name TXACK15
Initial Value 0
R/W R/(W)*
Note: * Only 1 can be written to these bits, to clear the flags.
Bit Bit Name
15 TXACK7
14 TXACK6
13 TXACK5
12 TXACK4
11 TXACK3
10 TXACK2
9 TXACK1

8
7 TXACK15
6 TXACK14
5 TXACK13
4 TXACK12
3 TXACK11
2 TXACK10
1 TXACK9
0 TXACK8
Note: Only 1 can be written to clear the flag.
*
14 13
TXACK6 TXACK5 TXACK4
0 0
R/(W)* R/(W)*
6 5
TXACK14 TXACK13 TXACK12
0 0
R/(W)* R/(W)*
Initial
Value R/W
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
0 R/(W)*
Section 13 Controller Area Network (HCAN)
12 11
TXACK3 TXACK2
0 0
R/(W)* R/(W)* R/(W)*
4 3
TXACK11 TXACK10
0 0
R/(W)* R/(W)* R/(W)*
Description
These bits are status flags that indicate error-free
transmission of the transmit message in the
corresponding mailboxes 1 to 15. When the
message in mailbox n (n = 1 to 15) has been
transmitted error-free, TXACKn is set to 1.
[Setting condition]
Completion of message transmission for
corresponding mailbox
[Clearing condition]
Writing 1
Bit 8 is reserved. This is a read-only bit and
cannot be modified.
Rev. 3.00 Mar. 14, 2006 Page 461 of 804
10 9 8
TXACK1 —
0 0 0
R/(W)* R
2 1 0
TXACK9 TXACK8
0 0 0
R/(W)* R/(W)*
REJ09B0104-0300