Curtiss-Wright / DY-4 DMV-177 Single VME Module Computer

The Curtiss-Wright/DY-4 DMV-177 is a single-slot VME module computer engineered for aerospace, defense, and industrial automation applications requiring computing in constrained spaces. Built around a PowerPC 603e RISC processor running at 100 MHz, the DMV-177 integrates up to 64 MB of EDAC-protected DRAM, Flash EPROM storage, and a full suite of I/O interfaces within a conduction-cooled form factor compliant with IEEE 1101.2 standards.

Technical Specifications Processor & Memory

PowerPC 603e RISC processor at 100 MHz

Up to 64 MB DRAM with Error Detection and Correction (EDAC)

Up to 10 MB Flash EPROM (64-bit), 8 MB Boot Flash EPROM

256 KB EEPROM, 512 bytes Serial EEPROM VMEbus Interface

VME64 standard (A32:D32 with A64:D64 MBLT support per ANSI/VITA 1-1994)

Advanced VME Interface Chip (SCV64) with system controller functions

Bus Isolation mode (BI-mode®), Location monitor with FIFO buffer, Auto-ID and Auto-SYSCON Serial Communications

Two EIA-422 channels: asynchronous (75–38.4K bps), synchronous (up to 613K bps); one channel supports DMA at up to 1 M bps

Two EIA-423 channels (asynchronous) SCSI Interface

Single-ended, 8-bit wide SCSI-2 via QLOGIC Fas 216 controller

Peak transfer rates: 5 Mbytes/second (asynchronous), 10 Mbytes/second (synchronous) Expansion & Additional I/O

One MAXPack module interface for flexible I/O expansion

On-board Ethernet (AUI interface), Four 16-bit counter/timers

Real-Time Clock, Tick and Watchdog timers

Key Features

Built-In-Test with 95% fault coverage

Foundation Firmware including debug monitor, diagnostics, Card Support Services, and JTAG/COP™ front-panel interface

Programmable low-power modes for power management

Conduction-cooled per MIL-E-5400/4158 and MIL-STD-2036 standards

Typical Applications systems in aerospace and defense requiring significant processing power and I/O density within minimal space. VME64-based architectures demanding high-speed serial communication, SCSI storage access, and network connectivity with extensive self-test coverage.

Compatibility & Integration Full VME64 compliance with A32:D32 and A64:D64 MBLT addressing. Supports flexible expansion through MAXPack interface. Compatible with systems requiring conduction cooling and enhanced reliability in harsh environments.