VME-5510L-XX - VMIC VME-5510L-XX VMEbus - Multimaster Repeater Link

VME-5510L-XX - VMIC VME-5510L-XX VMEbus - Multimaster Repeater Link Simple Type: System

VMIC VME-5510L-XX VMEbus - Multimaster Repeater Link Simple Type: System

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Allows expansion to multiple VMEbus systems in a star con?guration
Any address window in one chassis can be mapped to any window in the other chassis (for example, extended supervisory to short nonprivileged)
Automatic detection of remote chassis power up
Compliant to VMEbus Rev. C.1
In nontransparent mode, link arbiter determines which VMIVME-5510 is master of the link
In nontransparent mode, single cycle or burst access across the link is selected by software
Memory protected by user-selectable access window
Multimaster – allows multiple VMEbus masters in all chassis
Program-controlled attention interrupts allow each chassis to interrupt the other chassis
Software transparent mode – allows direct communication from primary chassis to secondary chassis with no software overhead (unidirectional link control with bidirectional data transfers)
Software-controlled isolation
Supports 16-, 24-, and 32-bit addressing (bidirectional)
Supports 8-, 16-, and 32-bit addressing (bidirectional)
Supports up to 25-foot cables
Switch-controlled isolation for maintenance
Two boards and two cables (in a variety of cable lengths) form a VME-to-VME link
Window sizes are jumper-selected from 256 bytes to 16 Mbyte (power of two sizes, that is, 256, 512, 1 K, 2 K, etc.)

General

Allows expansion to multiple backplanes in a star expansion con?guration (refer to Figure 2.)
Base address and address modi?er in repeated chassis are user selectable
Bidirectional attention interrupts over the cable (level and vector are software selectable)
Data strobe latency in burst mode (no VMEbus arbitration) is typically 731 ns for 25-foot cables
Double Eurocard form factor
High threshold logic provides high-noise immunity for all control signals
Meets VMEbus speci?cation - Rev. C. (for fully loaded chassis)
Memory protected by user-selectable access window. When VMEbus access is within window, it is repeated across the cable.
Simultaneous accesses can be handled three ways: BERR, interrupt, or status check after transfer(s)
Software isolation control mode for unlinked operation (multiprocessing)
Supports 16-, 24-, and 32-bit bidirectional addressing
Switch-controlled isolation for maintenance
Typical DTACK latency for a write is 170 ns (496 ns for read) with 25-foot cables