Siemens EF 88H Series Bedienungsanleitung PDF herunterladen (Seite 61)

Semiconductor Group 6 - 5

3.1 Priority Level Structure

The following tables show the SFR IEN2, the priority level grouping (table 6-1) and the priority within

level (table 6-2). The principle of the priority level selection is identical to the SAB 80C517, i.e. a

pair or triple can be programmed to one of four priority levels.

Special Function Register IEN2

The reset value of IEN2 is XX00 00X0B.

Bit Function

ES1 Enable serial interrupt of interface 1. Enables or disables the interrupt of serial

interface 1. If ES1 = 0, the interrupt is disabled.

ECMP Enables interrupt on compare match in compare registers CM0 - CM7. If

ECMP = 0, the interrupt is disabled.

ECT Enable compare timer interrupt. Enables or disables the interrupt at compare

timer overflow. If ECT = 0, the interrupt is disabled.

ECS Enables interrupt on compare match in compare register COMSET. If ECS = 0,

the interrupt is disabled.

ECR Enabled interrupt on compare match in compare register COMCLR. If ECR = 0,

the interrupt is disabled.

76543210

MSB LSB

Bit No.

IEN209A

ES1–ECMPECTECSECR––

Interrupt System

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