APPENDIX
Appendix 2. Control registers
b7 b6 b5 b4 b3 b2 b1 b0
At reset R/W
INT
3
to INT interrupt control registers (Addresses 6E16, 6F16, FD16, FE16, FF16)
7
Reference
Function
Bit
0
Bit name
b2 b1b0
6-7
0
0
0
Interrupt priority level select bits
RW
RW
RW
0 0 0 : Level 0 (Interrupt disabled)
0 0 1 : Level 1
0 1 0 : Level 2
1
2
0 1 1 : Level 3
1 0 0 : Level 4
1 0 1 : Level 5
1 1 0 : Level 6
1 1 1 : Level 7
Interrupt request bit (Note 1)
RW
(Note 2)
0 : No interrupt requested
1 : Interrupt requested
0
0
3
4
Polarity select bit
0 : The interrupt request bit is set to “1” at “H” level
when level sense is selected; this bit is set to “1”
at falling edge when edge sense is selected.
1 : The interrupt request bit is set to “1” at “L” level
when level sense is selected; this bit is set to “1”
at rising edge when edge sense is selected.
RW
6-18
RW
—
0
5
Level sense/Edge sense select
bit
0 : Edge sense
1 : Level sense
Undefined
Nothing is assigned.
7, 6
Notes 1: The interrupt request bits of INT3 to INT7 interrupts are invalid when the level sense is selected.
2: When writing to this bit, use the MOVM (MOVMB) or STA (STAB, STAD) instruction.
A-D conversion, UART0 and 1 transmit, UART0 and 1 receive,
timers A0 to A4, timers B0 to B2 interrupt control registers
(Addresses 7016 to 7C16)
b7 b6 b5 b4 b3 b2 b1 b0
At reset R/W
Timers A5 to A9 interrupt control registers (Addresses F516 to F916)
Bit
0
Bit name
Function
Reference
b2 b1b0
6-7
Interrupt priority level select bits
0
0
0
RW
RW
RW
0 0 0 : Level 0 (Interrupt disabled)
0 0 1 : Level 1
Timer Ai
7-9
0 1 0 : Level 2
1
2
0 1 1 : Level 3
Timer Bi
8-5
1 0 0 : Level 4
1 0 1 : Level 5
UART0
UART1
11-15
1 1 0 : Level 6
1 1 1 : Level 7
Interrupt request bit
Nothing is assigned.
RW
(Note 2)
0
3
0 : No interrupt requested
1 : Interrupt requested
A-D
12-10
(Note 1)
7 to 4
Undefined
—
Notes 1: The A-D conversion interrupt request bit is undefined after reset.
2: When writing to this bit, use the MOVM (MOVMB) or STA (STAB, STAD) instruction.
7906 Group User’s Manual Rev.2.0
20-34
RENESAS [ RENESAS TECHNOLOGY CORP ]
