HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 171

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

6.4.4
The interrupt request register 0 (IRR0) is an 8-bit register that indicates interrupt requests from
external input pins IRQ0 to IRQ5.
When clearing IRQ5R to IRQ0R bit to 0, 0 should be written to the bit after the bit is set to 1 and
the contents of 1 are read. Only 0 can be written to IRQ5R to IRQ0R.
Bit
3
2
1
0
Bit
7, 6
Bit Name
—
Interrupt Request Register 0 (IRR0)
Bit Name
IRQ11S
IRQ10S
IRQ01S
IRQ00S
Initial Value R/W
All 0
Initial Value
0
0
0
0
R
R/W
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Description
IRQ1 Sense Select
Select whether the interrupt signal to the IRQ1 pin is
detected at the rising edge, at the falling edge, or at
low level.
00: An interrupt request is detected at IRQ1 input
01: An interrupt request is detected at IRQ1 input
10: An interrupt request is detected at IRQ1 input
11: Reserved (Setting prohibited)
IRQ0 Sense Select
Select whether the interrupt signal to the IRQ0 pin is
detected at the rising edge, at the falling edge, or at
low level.
00: An interrupt request is detected at IRQ0 input
01: An interrupt request is detected at IRQ0 input
10: An interrupt request is detected at IRQ0 input
11: Reserved (Setting prohibited)
falling edge
rising edge
low level
falling edge
rising edge
low level
Rev. 4.00, 03/04, page 125 of 660