Z8F1680SH020SG Datasheet, PDF (99/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
74
Bits
Field
Reset
R/W
Address
8.4.2. Interrupt Request 1 Register
The Interrupt Request 1 (IRQ1) Register, shown in Table 38, stores interrupt requests for
both vectored and polled interrupts. When a request is presented to the interrupt controller,
the corresponding bit in the IRQ1 register becomes a 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 1 register to determine if any interrupt requests are pending.
Table 38. Interrupt Request 1 Register (IRQ1)
7
PA7VI
0
R/W
6
PA6CI
0
R/W
5
PA5CI
0
R/W
4
3
PAD4I PAD3I
0
0
R/W
R/W
FC3H
2
PAD2I
0
R/W
1
PAD1I
0
R/W
0
PA0I
0
R/W
Bit
[7]
PA7VI
[6]
PA6CI
[5]
PA5CI
[4:1]
PADxI
[0]
PA0I
Description
Port A7 or LVD Interrupt Request
0 = No interrupt request is pending for GPIO Port A7 or LVD.
1 = An interrupt request from GPIO Port A7 or LVD.
Port A6 or Comparator 0 Interrupt Request
0 = No interrupt request is pending for GPIO Port A6 or Comparator 0.
1 = An interrupt request from GPIO Port A6 or Comparator 0.
Port A5 or Comparator 1 Interrupt Request
0 = No interrupt request is pending for GPIO Port A5 or Comparator 1.
1 = An interrupt request from GPIO Port A5 or Comparator 1.
Port A or Port D Pin x Interrupt Request
0 = No interrupt request is pending for GPIO Port A or Port D pin x.
1 = An interrupt request from GPIO Port A or Port D pin x is awaiting service; x indicates the
specific GPIO port pin number (1–4).
Port A Pin 0 Interrupt Request
0 = No interrupt request is pending for GPIO Port A0.
1 = An interrupt request from GPIO Port A0 is awaiting service.
For interrupt source select description, see the Shared Interrupt Select Register section on
page 82.
PS025015-1212
PRELIMINARY
Interrupt Controller