Abort Acknowledge Register (Aback) - Renesas H8SX/1500 Series Hardware Manual

Section 13 Controller Area Network (HCAN)
13.3.8

Abort Acknowledge Register (ABACK)

ABACK indicates the normal cancellation of transmit messages in mailboxes.
Bit 15
Bit Name ABACK7
Initial Value 0
R/W R/(W)*
Bit 7
Bit Name ABACK15
Initial Value 0
R/W R/(W)*
Note: * Only 1 can be written to these bits, to clear the flags.
Bit Bit Name
15 ABACK7
14 ABACK6
13 ABACK5
12 ABACK4
11 ABACK3
10 ABACK2
9 ABACK1

8
7 ABACK15
6 ABACK14
5 ABACK13
4 ABACK12
3 ABACK11
2 ABACK10
1 ABACK9
0 ABACK8
Note: Only 1 can be written to clear the flag.
*
Rev. 3.00 Mar. 14, 2006 Page 462 of 804
REJ09B0104-0300
14 13
ABACK6 ABACK5 ABACK4
0 0
R/(W)* R/(W)*
6 5
ABACK14 ABACK13 ABACK12
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)*
12 11
ABACK3 ABACK2
0 0
R/(W)* R/(W)* R/(W)*
4 3
ABACK11 ABACK10
0 0
R/(W)* R/(W)* R/(W)*
Description
These bits are status flags that indicate error-free
cancellation (abortion) of the transmit message in
the corresponding mailboxes 1 to 15. When the
message in mailbox n (n = 1 to 15) has been
canceled error-free, ABACKn is set to 1.
[Setting condition]
Completion of transmit message cancellation for
corresponding mailbox
[Clearing condition]
Writing 1
Bit 8 is reserved. This is a read-only bit and
cannot be modified.
10 9 8
ABACK1 —
0 0 0
R/(W)* R
2 1 0
ABACK9 ABACK8
0 0 0
R/(W)* R/(W)*