Specifications

Chapter 1: Product description

VMEbus extended register set

As an extension to the VMEbus interface, the EPC-8A implements the set of VXIbus

(IEEE 1155-1992) standard multiprocessor support registers in the A16 space.

These registers provide a set of standard identification, status, control and communication

functions that are useful in multiprocessor environments. They allow dynamic system

configuration by providing for board identification, and provide well-defined

multi-processor communications channels and protocols.

The EPC-8A includes a complete set of VXIbus-defined message-based device registers.

These registers, implemented in a proprietary gate array and mapped into the VMEbus

A16 address space, include a device-type identifier register (supporting geographic

addressing), bus status and control registers, and a register-based message passing facility.

Specifications

Table 1-1. EPC-8A Environmental Specifications

Characteristic Value

Temperature Operating 0 – 60°C at point of entry of forced air derated 2°C

per 1000 ft. (300 m) over 6600 ft (2000m)

Storage –40 to 85°C

5°C per hour max excursion gradient

Humidity Operating 5% – 95% noncondensing

Storage 5% – 95% noncondensing

Altitude Operating 0 – 10,000 ft (3000 m)

Storage 0 – 40,000 ft (12,000 m)

Vibration Operating 0.015 inch (0.38 mm) P-P displacement with 2.5 g

peak (max) acceleration over 5–300 Hz

Storage 0.030 inch (0.76 mm) P-P displacement with 5.0 g

peak (max) acceleration over 5–300 Hz

Shock Operating 30 g, 11 mS duration, half-sine shock pulse

Storage 50 g, 11 mS duration, half-sine shock pulse

Airflow 6 Liters/sec. for the dual-slot module

3 Liters/sec. for the single-slot module

Note: Specifications apply to only the EPC-8A CPU.

Table 1-2. Additional EPC-8A Specifications

Characteristic

Value

Electrical

Current +5V 3.9A typical; 4.2A maximum

+12V 100mA typical; 100mA maximum

–12V 100mA typical; 100mA maximum

Other

Weight Without EXMs 2.7 lb. (1.3 kg)