Glossary

Slot 0 Controller

See Slot 0 Module. Also see Resource Manager.

Slot 0 Module

A VXIbus device that provides the minimum VXIbus slot 0 services to slots 1 through 12 (CLK10 and the module identity lines), but that may provide other services such as CLK100, SYNC100, STARBUS, and trigger control.

SMP

See Shared Memory Protocol.

STARX

Two (2) bi-directional, 50 W, differential ECL lines that provide for inter-module asynchronous communication. These pairs of timed and matched delay lines connect slot 0 and each of slots 1 through 12 in a mainframe. The delay between slots is less than 5 ns, and the lines are well matched for timing skew.

STARY

Two (2) bi-directional, 50 W, differential ECL lines that provide for inter-module asynchronous communication. These pairs of timed and matched delay lines connect slot 0 and each of slots 1 through 12 in a mainframe. The delay between slots is less than 5 ns, and the lines are well matched for timing skew.

STST

STart/STop protocol; used to synchronize modules.

Super CoolerT

This is a IntelliFrame Mainframe with all the features of the VX1410A mainframe, but with higher cooling capacity and very quiet operation.

SYNC100

A Slot 0 signal that is used to synchronize multiple devices with respect to a given rising edge of CLK100. These signals are individually buffered and matched to less than 2 ns of skew.

Synchronous Communications

A communications system that follows the ªcommand-responseº cycle model. In this model, a device issues a command to another device; the second device executes the command; then returns a response. Synchronous commands are executed in the order received.

SYSFAIL*

A signal line on the VMEbus that is used to indicate a failure by a device. The device that fails asserts this line.

System Clock Driver

A functional module that provides a 16 MHz timing signal on the Utility Bus.

VX1410A & VX1420A IntelliFrame Mainframe Instruction Manual

Glossary±7