ESH10000568 - MPIO-96 SPI Module

Product brief

The ESH10000568 is a high-density multi‑purpose I/O module providing 96 bidirectional channels with SPI-based control. Each channel can be configured per use as analog input, analog output, or pseudo-digital I/O. The module is designed for flexible signal routing, dense PCBA test fixtures, and mixed-signal production test systems where channel role may change at runtime.

Typical use cases include:

• PCBA test systems requiring high channel density with mixed analogue and digital behaviour

• NPI and production test setups with dynamic signal direction changes

• Custom instrumentation where pseudo-digital thresholds or open-drain behaviour are required

• Multi-channel analogue acquisition with optional high-speed numeric result aggregation

The module integrates tightly with Accordion systems and exposes all channels through consistent naming and runtime-configurable behaviour.

Datasheet

Manual

Software usage

Channel naming

All channels follow a strict naming convention:

{ModuleIndex}.ESH10000568.MPIO{00–95}

Example: Channel 42 on a module at position 1:

1.ESH10000568.MPIO42

Additional logical channels:

• NumericResult – aggregated numeric acquisition channel

• CALIBRATION – module calibration table (96 channels)

Total user-visible channels: 98

Channel configuration

• All channels default to INPUT mode

• Direction must be explicitly configured before use

• Direction can be changed at runtime when used as pseudo-digital output

• Batch configuration of channel groups is recommended for performance

Each channel can be configured as:

• Analog input

• Analog output

• Pseudo-digital input/output

Pseudo-digital modes

Open-drain emulation:

• Set VH < 0

• Logical HIGH → channel switched to INPUT (high‑impedance)

• Logical LOW → channel drives VL voltage

Floating output emulation:

• Set VL < 0

• Logical LOW → channel switched to INPUT (high‑impedance)

• Logical HIGH → channel drives VH voltage

These modes are intended for interaction with external pull-ups or mixed-signal nodes.

High-speed acquisition

• Supports synchronized multi-channel sampling

• Configurable sample rates

• Optional data reduction

• Results available through the NumericResult channel

Calibration

• Per-channel gain and offset

• Calibration data stored persistently on module

• Automatically applied during operation

Calibration should be re-run after:

• Hardware replacement

• Significant temperature or environmental changes

Pinout

This module exposes 96 user-facing I/O channels. Logical grouping maps directly to internal AD5592R devices: