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About the terminator of DDR3L memory of LS1020A.

Question asked by masaaki uno on Jan 18, 2016
Latest reply on Jan 19, 2016 by ufedor

Hello,

 

I am watching a connection diagram of LS1021A-twr.

 

A terminating resistance of CLK of DDR3 of P1010RDB is just between± 100 Ω.

LS1021A-twr adds a condenser to 72 Ω of resistance, and is connected to GVDD.

 

Is this circuit the specification of LS102xA? Or is there a different reason?

In particular, I can't understand the reason that a condenser exists by this circuit.

 

Best Regards,

Maaski.Uno

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