Rev. 1.0, 09/02, page 366 of 568
15.3.7
Transmit Acknowledge Register (TXACK)
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
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
TXACK7
TXACK6
TXACK5
TXACK4
TXACK3
TXACK2
TXACK1
TXACK15
TXACK14
TXACK13
TXACK12
TXACK11
TXACK10
TXACK9
TXACK8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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. The
write value should always be 0.
Note:
*
Only 1 can be written to clear the flag.
Summary of Contents for H8S/2627
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