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IO207

IO207 — The IO207 I/O module provides a total of 128 digital TTL lines.

Introduction

The IO207 I/O module provides a total of 128 digital TTL lines, programmable as inputs or outputs in groups of eight channels. Each channel group can be configured to use pull-up resistors (5 V or 3.3 V, ±24 mA), pull-down resistors or floating lines.

The digital channels are accessible in two main groups (front and rear) of 64 channels on two separate connectors. The driver implements the following additional features for each main group:

  • Option to enable only the first half of the channels of a main group (the rest of the channels are then disabled). This reduces the overall latency of the I/O module, because less data is written to the bus

  • Option to enable synchronous read and write operations on all the channels of a main group. This allows all 64 channels to be simultaneously updated, but also increases the overall latency of the I/O module.

Driver Blocks