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Pls answer my question!

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stocking

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Pls tell me the question:
In synchronous dual-port sram, must both clka and clkb be same?
What is synchronous dual-port sram.
 

ami

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Hi,
In synchronous dual port SRAM, clocka(portA) and clockb(portB) can be different ( in frequency or phase).
but the problem is when portA and portB access to 1 location( and violate the timing of RAM), the data in that location may be corrupted
---> you need a control method between clocka and clockb
+ clocka and clockb is different in frequency but have a fixed-phase-relationship(divided clocks) ---> satisfy timing between portA/portB access at same location
+ clocka and clockb is different in frequency and phase ----> need a control method to avoid same address access.
Rgrds
 

AlexWan

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stocking said:
What is synchronous dual-port sram.

Here, "synchronous" or "asynchronous" is for access mode, not clock relationship.
 

stocking

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thanks! AlexWan. Now know the difference between synchronous" or "asynchronous. synchronous means that clka and dataa is synchronous, right?
 

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