HD6432621 Hitachi, HD6432621 Datasheet - Page 13

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

Section
15.2.10 Remote
Request Register
(RFPR)
15.2.11 Interrupt
Register (IRR)
15.2.16 Unread
Message Status
Register (UMSR)
Page
535
536
544
Description
Note added
Note: * Can only be written with 1 for flag clearing.
IRR
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Note added
Note: * Can only be written with 1 for flag clearing.
Note added
Note: * Can only be written with 1 for flag clearing.
RFPR
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Initial value:
Initial value:
UMSR
R/W:
R/W:
Bit:
Bit:
:
:
:
:
:
:
:
:
:
:
:
:
UMSR15 UMSR14 UMSR13 UMSR12 UMSR11 UMSR10
RFPR15
UMSR7
R/(W) *
R/(W) *
RFPR7
R/(W)*
R/(W)*
R/(W)*
IRR7
15
15
15
—
—
0
7
0
0
7
0
0
7
0
RFPR14
RFPR6
UMSR6
R/(W) *
R/(W) *
R/(W)*
R/(W)*
R/(W)*
IRR6
14
14
14
—
—
0
6
0
0
6
0
0
6
0
RFPR13
UMSR5
R/(W) *
R/(W) *
RFPR5
R/(W)*
R/(W)*
R/(W)*
IRR5
13
13
13
—
—
0
5
0
0
5
0
0
5
0
RFPR12
RFPR4
R/(W)*
R/(W)*
UMSR4
R/(W) *
R/(W) *
R/(W)*
R/(W)*
IRR12
IRR4
12
12
12
0
4
0
0
4
0
0
4
0
RFPR11
RFPR3
R/(W)*
R/(W)*
R/(W)*
UMSR3
R/(W) *
R/(W) *
IRR3
11
11
—
—
11
0
3
0
0
3
0
0
3
0
RFPR10
RFPR2
R/(W)*
R/(W)*
UMSR2
R/(W) *
R/(W) *
IRR2
10
10
—
—
10
R
0
2
0
0
2
0
0
2
0
RFPR1
RFPR9
R/(W)*
R/(W)*
UMSR1
R/(W) *
UMSR9
R/(W) *
IRR1
IRR9
R
R
9
0
1
0
9
0
1
0
9
0
1
0
RFPR0
RFPR8
R/(W)*
R/(W)*
R/(W)*
R/(W)*
UMSR0
R/(W) *
UMSR8
R/(W) *
IRR0
IRR8
8
0
0
0
8
0
0
0
8
0
0
0