SAMSys MP9320, Руководство пользователя

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Installation
27
Digital (TTL) Input/Output Setup
The MP9320 is equipped with a digital I/O port that provides four
logic-level (TTL) input signals and four output signals. Refer to
the
SAMSys Forth Programming Language Reference Guide for
programming information. The digital inputs are optically
isolated. The outputs are open collector.
Figure 12– Digital Input and Output Port Configuration
Signal Name Pin No. Description
Input 1 a TTL input - optically isolated
Input 2 b TTL input - optically isolated
Input 3 U TTL input - optically isolated
Input 4 D TTL input - optically isolated
Digital input common N input commmon
Output 1 Z TTL output - open collector
Output 2 c TTL output - open collector
Output 3 V TTL utput - open collector
Output 4 E TTL output - open collector
Digital output common M output common