Emerson / Motorola IPMC761 Multifunction I/O Module

The Emerson/Motorola IPMC761 is a PMC form factor multifunction I/O module engineered for industrial automation and control systems. This card integrates a PCI-to-ISA bridge, ultra-wide SCSI adapter, and Super I/O functionality to support versatile sensor, actuator, and device interfacing. Built on PowerPlus II architecture, it delivers multiple serial ports, parallel port capability, and SCSI connectivity in a single-wide, standard-length package compatible with Motorola Single Board Computers including the MVME5100, MVME5500, and MVME6100, while maintaining backward compatibility with legacy MVME761 and MVME712M modules.

## Technical Specifications

**Form Factor & Architecture**
• PMC (PCI Mezzanine Card), single-wide standard length
• PowerPlus II architecture
• 32-bit PCI interface to IEEE P1386.1 PMC-compliant host boards

**Serial Ports (IPMC761-001)**
• Two asynchronous serial ports (16C550 UART, EIA-574 DTE)
• Two synchronous/asynchronous serial ports (85230/8536 controller)
• Baud rate: up to 38.4K asynchronous, 2.5M synchronous
• Connectors: DB-9 for asynchronous; HD-26 for sync/async ports

**SCSI Interface**
• One single-ended ultra-wide SCSI port
• Synchronous transfer rate: 40 MB/s across 16-bit bus
• Backward compatible with MVME761 and P2 adapter cards

**Parallel Port**
• One 8-bit bidirectional IEEE 1284 compliant port
• Centronics compatible, master-only operation

**Power Consumption**
• +5V: 0.5 A typical
• +12V: 0.2 A typical, 0.5 A maximum
• -12V: 0.1 A typical, 0.3 A maximum
• Powered via +5V and +3.3V through PMC connectors

## Key Features

• Integrated PCI-to-ISA bridge eliminates need for separate expansion logic
• Ultra-wide SCSI with 40 MB/s throughput supports high-speed storage and peripheral connectivity
• Four serial ports provide flexible legacy and modern device integration
• Full IEEE 1284 parallel port for printer and data acquisition equipment

## Typical Applications

Industrial control systems, embedded real-time platforms, legacy device integration, storage subsystem connectivity, multi-port serial communication gateways.

## Compatibility & Integration

Designed for MVME5100, MVME5500, and MVME6100 SBC platforms. Connectors P11, P12, P13 provide 32-bit PCI interface; P14 routes I/O signals including narrow SCSI, parallel, serial, and power; P15 carries remaining SCSI data lines.