Curtiss-Wright / VMETRO / Micro Memory MM-6326/32M High Speed VME / VSB Memory Module

The MM-6326/32M is a high-speed VME/VSB memory module delivering 32 MB of capacity with dual-bus support for demanding embedded systems. Engineered for data acquisition, signal processing, and memory-intensive real-time operations, this module combines fast access times with flexible block transfer capabilities to exceed 30 Mbytes/sec throughput. It integrates byte-level parity checking and diagnostic control registers to ensure data integrity in environments.

Technical Specifications Memory Configuration

32 MB capacity (also available in 8 MB, 16 MB, and 64 MB)

Jumper-selectable addressing on 1 Mbyte boundaries for each bus VMEbus Interface (Rev C1)

Address modes: A32, A24, D16, D8 (UAT)

Data width: 8, 16, 32 bits

Sequential block transfer: 256 bytes maximum

Cycle/access time: 125/75 nsec (read), 125/50 nsec (write) VSBbus Interface (Rev C)

Address mode: A32

Data width: 32 bits

Sequential block transfer: 64 Kbytes maximum

Cycle/access time: 125/75 nsec (read), 125/50 nsec (write) Performance

Data throughput: greater than 30 Mbytes/sec

Supports block transfer (BLT), page mode, and bank-interleave operations

Optimized for low-latency real-time operations Error Detection

Byte-level parity generation and checking

Control status register in short I/O address space for parity reporting

Write-wrong parity mode for diagnostics

Key Features

Dual VMEbus and VSBbus compatibility for flexible system integration

High-speed access with sequential block transfers up to 64 Kbytes on VSBbus

Parity-protected data paths for critical applications

Operating temperature range: 0 to +60°C

Environmental rating: up to 95% relative humidity without condensation

Burn-in tested with 48-hour diagnostics including temperature cycling

Compatibility & Integration Fully compatible with VMEbus Rev C1 and VSBbus Rev C systems including MVME130/131, MVME135/136, MVME141, and Delta Series processors.