SK0-003 · Question #228
Which of the following is the definition of CAS latency?
The correct answer is A. CAS latency is the ratio between the column access time and the clock cycle time. CAS latency defines the delay, measured in clock cycles, between a memory controller requesting data and the data becoming available at the memory module's output.
Question
Which of the following is the definition of CAS latency?
Options
- ACAS latency is the ratio between the column access time and the clock cycle time.
- BCAS latency is the ratio between the row access time and the clock cycle time.
- CCAS latency is the ratio between the column access time and the data burst transfer time.
- DCAS latency is the ratio between the row access time and the data burst transfer time.
How the community answered
(24 responses)- A88% (21)
- C8% (2)
- D4% (1)
Why each option
CAS latency defines the delay, measured in clock cycles, between a memory controller requesting data and the data becoming available at the memory module's output.
CAS (Column Access Strobe) latency is the number of clock cycles required for the memory controller to access a specific column of data within a RAM module after the column address has been provided.
CAS latency specifically relates to column access time, not row access time; row access is associated with RAS (Row Access Strobe).
CAS latency is measured in clock cycles, not directly as a ratio to the data burst transfer time, although it influences overall transfer speed.
CAS latency is related to column access, not row access, and is measured in clock cycles rather than as a ratio to data burst transfer time.
Concept tested: RAM CAS latency
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