HD6432621 Hitachi, HD6432621 Datasheet - Page 589

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Bit x: UMSRx
0
1
15.2.17 Local Acceptance Filter Masks (LAFML, LAFMH)
The local acceptance filter masks (LAFML, LAFMH) are 16-bit readable/writable registers that
filter receive messages to be stored in the receive-only mailbox (MC0, MD0) according to the
identifier. In these registers, consist of LAFMH15 (MSB) to LAFMH5 (LSB) are 11
standard/extended identifier bits, and LAFMH1 (MSB) to LAFML0 (LSB) are 18 extended
identifier bits.
Initial value:
Initial value:
Initial value:
Initial value:
LAFML
LAFMH
R/W:
R/W:
R/W:
R/W:
Bit:
Bit:
Bit:
Bit:
LAFML15 LAFML14 LAFML13 LAFML12 LAFML11 LAFML10 LAFML9
LAFMH15 LAFMH14 LAFMH13 LAFMH12 LAFMH11 LAFMH10 LAFMH9 LAFMH8
LAFMH7
LAFML7
Description
[Clearing condition]
Writing 1
Unread receive message is overwritten by a new message
[Setting condition]
When a new message is received before RXPR is cleared
R/W
R/W
R/W
R/W
15
15
0
7
0
0
7
0
LAFMH6 LAFMH5
LAFML6
R/W
R/W
R/W
R/W
14
14
0
6
0
0
6
0
LAFML5
R/W
R/W
R/W
R/W
13
13
0
5
0
0
5
0
LAFML4
R/W
R/W
R/W
12
12
—
0
4
0
0
R
4
0
LAFML3
R/W
R/W
R/W
11
11
—
0
3
0
0
R
3
0
LAFML2
R/W
R/W
R/W
10
10
—
0
2
0
0
R
2
0
LAFMH1 LAFMH0
LAFML1
R/W
R/W
R/W
R/W
9
0
1
0
9
0
1
0
(Initial value)
x = 0 to 15
LAFML0
LAFML8
R/W
R/W
R/W
R/W
8
0
0
0
8
0
0
0
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