HD6417750RF240V Datasheet, PDF (430/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 15 Controller Area Network (HCAN)
15.3.7 Transmit Acknowledge Register (TXACK)
The transmit acknowledge register (TXACK) is a 16-bit register containing status flags that
indicate the normal transmission of mailbox (buffer) transmit messages.
Bit Bit Name
Initial Value R/W
Description
15 TXACK7
0
14 TXACK6
0
13 TXACK5
0
12 TXACK4
0
11 TXACK3
0
10 TXACK2
0
9
TXACK1
0
8
—
0
7
TXACK15
0
6
TXACK14
0
5
TXACK13
0
4
TXACK12
0
3
TXACK11
0
2
TXACK10
0
1
TXACK9
0
0
TXACK8
0
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
R/(W)^*
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 bit is always read as 0 and
the write value should always be 0.
Note: * Only 1 can be written to clear the flag.
Rev. 7.00 Sep. 11, 2009 Page 394 of 566
REJ09B0211-0700