h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 575

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

15.2.7
The transmit acknowledge register (TXACK) is a 16-bit readable/writable register containing
status flags that indicate normal transmission of mailbox (buffer) transmit messages.
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 8—Reserved: This bit always reads 0. The write value should always be 0.
Bit x
TXACKx
0
1
Initial value:
Initial value:
TXACK
Transmit Acknowledge Register (TXACK)
Description
[Clearing condition]
Writing 1
Completion of message transmission for corresponding mailbox
R/W:
R/W:
Bit:
Bit:
TXACK15 TXACK14 TXACK13 TXACK12 TXACK11 TXACK10 TXACK9
TXACK7
R/(W) *
R/(W) *
15
0
7
0
TXACK6
R/(W) *
R/(W) *
14
0
6
0
TXACK5
R/(W) *
R/(W) *
13
0
5
0
TXACK4
R/(W) *
R/(W) *
12
Section 15 Controller Area Network (HCAN)
0
4
0
Rev. 5.00 Sep 22, 2005 page 549 of 1136
TXACK3
R/(W) *
R/(W) *
11
0
3
0
TXACK2
R/(W) *
R/(W) *
10
0
2
0
REJ09B0257-0500
TXACK1
R/(W) *
R/(W) *
9
0
1
0
(Initial value)
(x = 15 to 0)
TXACK8
R/(W) *
—
—
8
0
0
0