Curtiss-Wright GT200 VME, Справочник по аппаратуре

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GLOSSARY
2eVME -----------------------------An asynchronous VME protocol. This protocol used both edges of the
DA0*, DA1*, and DTACK* to qualify data thereby doubling
throughput.
2eSST------------------------------
A source synchronous VME protocol. This protocol sends the data and
strobe and does not wait for any acknowledgments, allowing data to be
sent at much higher bandwidth. Both strobe edges are used; falling
edges are used for odd data beats and rising edge for even data beats.
This protocol increases the VME bandwidth to 320MBps.
block write cycle ----------------- A DTB cycle used to transfer a block of 1 to 256 bytes from a master to a
slave. The block write cycle is very similar to the block read cycle. It
uses a string of 1-, 2-, or 4-byte data transfers and the master does not
release the DTB until all of the bytes have been transferred. It differs
from a string of write cycles in that the master broadcasts only one
address and address modifier (at the beginning of the cycle). Then the
slave increments this address on each transfer so that the next transfer is
stored in the next higher location.
bus timer--------------------------- A functional module that measures the time each data transfer takes on
the DTB and terminates the DTB cycle if a transfer takes too long.
Without this module, it could wait forever for a slave to respond if the
master tries to transfer data to or from a nonexistent slave location. The
bus timer prevents this by terminating the cycle.
CSR -------------------------------- Control/Status Register. These registers are used for configuration and
control.
CTS-------------------------------- Rs-232 line indicating, Clear To Send data.
daisy chain topology------------- A configuration in which devices are connected to each other in
sequence
DCD------------------------------- RS-232 line indicating. Data Carrier Detect
deterministic ---------------------- Completely predictable message transit time from application to
application.
DHCP------------------------------ Dynamic Host Configuration Protocol. A protocol for assigning
dynamic IP addresses to devices connected to the network.
Copyright 2005 GLOSSARY-1 GT200 VME Hardware Reference