I. Core Parameters

CPU: MC68040, 32 MHz, 32-bit, FPU/MMU/8KB Cache

DRAM: 8MB FPM (parity check)

SRAM: 512KB battery backup (power-on retention)

Flash: 1MB

Bus: VMEbus A32/D64, master/slave, system controller

Board-mounted I/O (critical)

✅ 10 Mbps Ethernet (with DMA)

✅ Narrowband SCSI (with DMA)

2 × Serial ports: Console (EIA-232-D), EIA-232/422 optional

✅ 4 × IndustryPack (IP) expansion slots (with DMA)

Environment: Industrial grade 0–70°C, shock-resistant, +5V power supply, standard 6U VME

II. 532A vs 530A vs 531A vs 523A (Ultimate Comparison)

530A: ❌ Network port ❌ SCSI ✔️ 4×IP (Basic Expansion Type)

531A: ✔️ Network port ❌ SCSI ✔️ 4×IP (Network Expansion Type)

523A: ✔️ Network port ✔️ SCSI ✔️ 4×IP (Fully Integrated Type, Early Model)

532A: ✔️ Network port ✔️ SCSI ✔️ 4×IP (Fully Integrated Enhanced Type, Later Top-of-the-Line)

Sentence: 532A = 531A + Onboard SCSI = Enhanced Version of 523A.

III. Main Features

Integrated Full Interfaces: Network port + SCSI + Dual Serial Ports + 4IP slots, network/storage/extension can be set up without subcards

Strong Expansion Capability: 4 IP slots (with DMA), can plug analog, digital, communication, motion control IP modules

High-reliability Industrial Design: Wide temperature range, shock-resistant, battery backup SRAM/TOD clock, supports VxWorks/pSOS real-time system

Strong Real-time Performance: MC68040 + VMEbus + DMA, suitable for hard real-time control and data acquisition

IV. Typical Applications

Industrial DCS/PLC, process control (requires network + local storage + multiple I/O)

Embedded real-time control, robots, military / aviation, communication base stations

Test measurement, data acquisition system (SCSI connects hard drives / optical drives, IP connects sensors)

Need complete interfaces + maximum expansion for high-end VME systems

V. Spare Parts and Alternatives

Model: MVME162-532A (Spare Part Number: 01-W3960Bxxx)

Direct Replacement:

Downward: 531A (no SCSI), 530A (no network/no SCSI), 523A (early fully integrated)

Compatible Replacement: Can directly replace all models of the same series (VME/IP slots are compatible)