ZUSBOPTSC01ZACG datasheet(85/282 Pages) ZILOG

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PS022827-1212

P R E L I M I N A R Y

Interrupt Control Register Definitions

Z8 Encore! XP® F082A Series

Product Specification

Shared Interrupt Select Register

The Shared Interrupt Select (IRQSS) Register, shown in Table 48, 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 48. Shared Interrupt Select Register (IRQSS)

Bit

Field

PA7VS

PA6CS

Reserved

RESET

00000000

R/W

R/WR/W

R/WR/WR/WR/WR/WR/W

Address

FCEH

Bit

Description

[7]



PA7VS

PA7/LVD Selection

0 = PA7 is used for the interrupt for PA7VS interrupt request.



1 = The LVD is used for the interrupt for PA7VS interrupt request.

[6]



PA6CS

PA6/Comparator Selection

0 = PA6 is used for the interrupt for PA6CS interrupt request.



1 = The Comparator is used for the interrupt for PA6CS interrupt request.

[5:0]

Reserved

These bits are reserved and must be programmed to 000000.

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