Intel iSBC CSM/001 Central Services Module

The Intel iSBC CSM/001 Central Services Module is a Multibus-compatible support card that provides essential system management functions for industrial and embedded computing platforms. This module generates the system clock for synchronous operation across distributed processors and peripherals, manages bus arbitration logic to prevent access conflicts on the Multibus backplane, and incorporates power-fail detection to enable graceful shutdown and data preservation during unexpected power loss. The CSM/001 conforms to the standard Multibus form factor (6.75 by 12 inches) and interfaces directly with the Multibus backplane per IEEE 796 specifications.

Technical Specifications

Form Factor: 6.75 inch by 12 inch printed circuit board (standard Multibus module)

System Clock Generation: Core timing and synchronization function for Multibus architecture

Power-Fail Detection: Monitors system power status to enable protective shutdown mechanisms

Bus Arbitration Logic: Manages Multibus access arbitration among multiple processors and bus masters

Multibus Interface: Direct backplane connection per IEEE 796 standard

Key Features

Centralized system support functions eliminate the need for distributed timing and arbitration across multiple boards

Power-fail detection prevents data corruption during unexpected power interruptions

Bus arbitration logic enforces deterministic access to the Multibus, critical for real-time industrial applications

Standard Multibus form factor enables drop-in integration with existing CPU and peripheral modules

Typical Applications

Industrial control systems requiring synchronized multi-processor operation

Commercial embedded computing platforms utilizing Multibus architecture

Data acquisition systems where data integrity during power transients is essential

Modular computer systems requiring centralized timing and bus management

Compatibility & Integration The CSM/001 is a member of Intel's iSBC (Intelligent Single Board Computer) product family and operates as a system services provider within Multibus-based platforms. It has foundational support for CPU boards and peripheral modules throughout the 1980s and 1990s Multibus ecosystem.