wait state


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wait state

[′wāt ‚stāt]
(computer science)
The state of a computer program in which it cannot use the central processing unit normally because the unit is waiting to complete an input/output operation.

wait state

(architecture)
A delay of one or more clock cycles added to a processor's instruction execution time to allow it to communicate with slow external devices. The number and duration of wait states may be pre-configured or they may be controlled dynamically via certain control lines.

wait state

The time spent waiting for an operation to take place. Wait states are often idle computer cycles, because a computer's CPU is much faster than main memory. Wait states are introduced between the time the CPU requests data from the RAM (an address is placed on the address bus) until the content has been delivered to the CPU. See address bus.
References in periodicals archive ?
Supports random wait states on address, data, and response channels and programmable response behavior using transaction-level request matching
This allows tuning of design performance to eliminate wait states and other performance-eroding workarounds for interface mismatches.
In addition, nvSRAM devices emulate and replace fast SRAM in high-speed processor systems to reduce wait states and optimize performance, while also delivering the added benefit of backup protection for critical state information.
GSI Technology (Nasdaq:GSIT) today announced the availability of its 144Mb NBT[TM] (No Bus Turnaround) SRAM that supports back-to-back Read/Write operation with no wait states.
The new RSC-4x Demo/Evaluation Toolkit V2 includes an RSC-4x-based evaluation board with upgrades such as a USB interface, 0 wait states for improved quality synthesis, and 32MBytes of serial flash memory for storing synthesized speech.
The 6x5 Smart Speed crossbar switch nearly eliminates wait states.