Z8F0113HJ005EG Datasheet, PDF (82/245 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F0823 Series
Product Specification
67
Shared Interrupt Select Register
The Shared Interrupt Select (IRQSS) register (Table 49) determines the source of the
PADxS interrupts. The Shared Interrupt Select register selects between Port A and 
alternate sources for the individual interrupts.
Because these shared interrupts are edge-triggered, it is possible to generate an interrupt
just by switching from one shared source to another. For this reason, an interrupt must be
disabled before switching between sources.
Table 49. Shared Interrupt Select Register (IRQSS)
Bit
7
6
5
4
3
2
1
0
Field
Reserved PA6CS
Reserved
RESET
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
FCEH
Bit
[7]
[6]
PA6CS
[5:0]
Description
Reserved
This bit is reserved and must be programmed to 0.
PA6/Comparator Selection
0 = PA6 is used for the interrupt for PA6CS interrupt request.
1 = The comparator is used as an interrupt for PA6CS interrupt requests.
Reserved
These bits are reserved and must be programmed to 000000.
PS024315-1011
PRELIMINARY
Interrupt Control Register Definitions