Description
1. At-A-Glance Executive Brief
- Model: IPMC761
- Brand: Motorola / Emerson
- Part Type: Multifunction I/O PMC Expansion Module
- Lifecycle Status: Legacy / Extended Support
- System Compatibility: MVME5100, MVME5500, and MVME6100 SBCs
- Form Factor: Single-wide PMC (PCI Mezzanine Card)
2. Technical Introduction
Legacy VMEbus computing nodes often hit a wall when older peripheral interfaces fail to match modern single board computer architectures.
Maintenance teams facing obsolete hardware find themselves unable to interface with legacy rear transition modules or older SCSI peripherals without undergoing expensive, complete system overhauls.
The Motorola IPMC761 module resolves this integration bottleneck by mounting directly onto the host board PCI bus via standard PMC connectors. It bridges the gap by incorporating a PCI-to-ISA bridge, an ultra-wide SCSI adapter, and Super I/O capabilities, enabling older VME systems to maintain full backward compatibility with legacy MVME761 transition setups without sacrificing host slot real estate.
3. Core Technical Specifications
- Bus Interface: 32-bit PCI, IEEE P1386.1 PMC-compliant
- Serial Ports: 2 asynchronous and 2 synchronous/asynchronous ports
- Storage Interface: Single-ended ultra-wide SCSI port
- Parallel Interface: One standard parallel port
- Host Compatibility: MVME5100, MVME5500, MVME6100 Single Board Computers
- Power Requirements: Draws +5V and +3.3V through PMC P11-P15 connectors
- Environmental Tolerance: Standard industrial operating temperature limits
4. Field Engineer’s Tech Notes
- PMC Connector Seating: When mounting the card onto the host single board computer, ensure the P11 through P15 standoffs and blind-mate connectors are perfectly square before applying torque, as misaligned pins will compromise the 32-bit PCI data bus.
- SCSI Bus Termination: If utilizing the onboard ultra-wide SCSI adapter interface with legacy drives, verify that active termination blocks are correctly powered and daisy-chain cable lengths do not exceed specification limits to prevent packet corruption.
5. Adaptive QA & Testing Protocol
Bench verification involves mounting the PMC module onto a test SBC fixture to execute loopback tests across all four serial ports (verifying RS-232/RS-485 transceiver integrity). The ultra-wide SCSI port undergoes data read/write stress testing using a connected diagnostic drive array, while parallel port registers are checked for proper handshaking signals. Complete test reports and verification sign-offs are available upon request prior to fulfillment.
6. Buyer’s FAQ
- What is the standard warranty period for this module? All units include a 12-month operational warranty covering manufacturing defects and hardware performance.
- Is this part supplied as New Surplus or refurbished? We maintain stock of both factory-sealed New Surplus (NSFP) and fully bench-tested refurbished units depending on immediate project requirements.
- How fast can an emergency replacement unit be dispatched? Expedited same-day air shipping is available for all in-stock parts to minimize facility downtime during unexpected hardware failures.
