Z8F1680SH020SG Datasheet, PDF (98/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
73
8.4.1. Interrupt Request 0 Register
Bits
Field
Reset
R/W
Address
The Interrupt Request 0 (IRQ0) Register, shown in Table 37, stores the interrupt requests
for both vectored and polled interrupts. When a request is presented to the interrupt
controller, the corresponding bit in the IRQ0 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 0 register to determine if any interrupt requests are pending.
Table 37. Interrupt Request 0 Register (IRQ0)
7
6
5
4
3
2
1
0
T2I
T1I
T0I
U0RXI U0TXI
I2CI
SPII
ADCI
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FC0H
Bit
[7]
T2I
[6]
T1I
[5]
T0I
[4]
U0RXI
[3]
U0TXI
[2]
I2CI
[1]
SPII
[0]
ADCI
Description
Timer 2 Interrupt Request
0 = No interrupt request is pending for Timer 2.
1 = An interrupt request from Timer 2 is awaiting service.
Timer 1 Interrupt Request
0 = No interrupt request is pending for Timer 1.
1 = An interrupt request from Timer 1 is awaiting service.
Timer 0 Interrupt Request
0 = No interrupt request is pending for Timer 0.
1 = An interrupt request from Timer 0 is awaiting service.
UART 0 Receiver Interrupt Request
0 = No interrupt request is pending for the UART 0 receiver.
1 = An interrupt request from the UART 0 receiver is awaiting service.
UART 0 Transmitter Interrupt Request
0 = No interrupt request is pending for the UART 0 transmitter.
1 = An interrupt request from the UART 0 transmitter is awaiting service.
I²C Interrupt Request
0 = No interrupt request is pending for the I²C.
1 = An interrupt request from I²C is awaiting service.
SPI Interrupt Request
0 = No interrupt request is pending for the SPI.
1 = An interrupt request from the SPI is awaiting service.
ADC Interrupt Request
0 = No interrupt request is pending for the ADC.
1 = An interrupt request from the ADC is awaiting service.
PS025015-1212
PRELIMINARY
Interrupt Controller