Z8F082ASH020SC Datasheet, PDF (70/244 Pages) Zilog, Inc. – Z8 Encore XP-R F08xA Series with eXtended Peripherals

Z8 Encore! XP^® F08xA Series
Product Specification
52
Table 33. Interrupt Request 1 Register (IRQ1)
BITS
FIELD
RESET
R/W
ADDR
7
PA7VI
0
R/W
6
PA6CI
0
R/W
5
PA5I
0
R/W
4
3
PA4I
PA3I
0
0
R/W
R/W
FC3H
2
PA2I
0
R/W
1
PA1I
0
R/W
0
PA0I
0
R/W
PA7VI—Port A7 or LVD Interrupt Request
0 = No interrupt request is pending for GPIO Port A or LVD.
1 = An interrupt request from GPIO Port A or LVD.
PA6CI—Port A6 or Comparator Interrupt Request
0 = No interrupt request is pending for GPIO Port A or Comparator.
1 = An interrupt request from GPIO Port A or Comparator.
PAxI—Port A Pin x Interrupt Request
0 = No interrupt request is pending for GPIO Port A pin x.
1 = An interrupt request from GPIO Port A pin x is awaiting service.
where x indicates the specific GPIO Port pin number (0–5).
Interrupt Request 2 Register
The Interrupt Request 2 (IRQ2) register (Table 34) stores interrupt requests for both vec-
tored and polled interrupts. When a request is presented to the interrupt controller, the cor-
responding bit in the IRQ2 register becomes 1. If interrupts are globally enabled (vectored
interrupts), the interrupt controller passes an interrupt request to the eZ8 CPU. If interrupts
are globally disabled (polled interrupts), the eZ8 CPU can read the Interrupt Request 2
register to determine if any interrupt requests are pending.
Table 34. Interrupt Request 2 Register (IRQ2)
BITS
FIELD
RESET
R/W
ADDR
7
6
5
4
3
2
1
Reserved
PC3I
PC2I
PC1I
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FC6H
Reserved—Must be 0.
PCxI—Port C Pin x Interrupt Request
0 = No interrupt request is pending for GPIO Port C pin x.
1 = An interrupt request from GPIO Port C pin x is awaiting service.
where x indicates the specific GPIO Port C pin number (0–3).
0
PC0I
0
R/W
PS024705-0405
PRELIMINARY
Interrupt Controller