HD6432646 Hitachi, HD6432646 Datasheet - Page 590

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

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 (RX0) 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.
LAFMH Bits 7 to 0 and 15 to 13–11-Bit Identifier Filter (LAFMHx): Filter mask bits for the
first 11 bits of the receive message identifier (for both standard and extended identifiers).
Bit x: LAFMHx
0
1
556
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
Stored in RX0 (receive-only mailbox) depending on bit match between RX0
message identifier and receive message identifier
Stored in RX0 (receive-only mailbox) regardless of bit match between RX0
message identifier and receive message identifier
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
4
0
LAFML3
R/W
R/W
R/W
11
11
—
—
0
3
0
0
3
0
LAFML2
R/W
R/W
R/W
10
10
—
—
0
2
0
0
2
0
LAFMH1 LAFMH0
LAFML1
R/W
R/W
R/W
R/W
9
0
1
0
9
0
1
0
(Initial value)
(x = 15 to 0)
LAFML0
LAFML8
R/W
R/W
R/W
R/W
8
0
0
0
8
0
0
0