Isolation in DDR
jebin , 11-25-2020, 07:00 AM
Hi,
What is the meaning of "Isolation : DQ/CA/DM/CS/CK/DQS to any aggressor : -40 dB" and how to implement in Layout?.
Jebin
What is the meaning of "Isolation : DQ/CA/DM/CS/CK/DQS to any aggressor : -40 dB" and how to implement in Layout?.
Jebin
robertferanec , 11-30-2020, 04:01 AM
This can help (there are numbers also in dB): https://youtu.be/bzDheVwJZDM?t=1077
jebin , 11-30-2020, 09:30 PM
Hi Robert,
Thanks for replay, You have explained nicely Thanks a Lot.
What is meaning of "Tandem Layer clearance: >0.5xW" ?
Jebin
Thanks for replay, You have explained nicely Thanks a Lot.
What is meaning of "Tandem Layer clearance: >0.5xW" ?
Jebin
robertferanec , 12-02-2020, 02:31 AM
Where exactly it is used?
jebin , 12-02-2020, 05:45 AM
Hi Robert,
Its used in LPDDR Routing. Guidelines enclosed for your reference.
Jebin
Its used in LPDDR Routing. Guidelines enclosed for your reference.
Jebin
jebin , 12-02-2020, 05:46 AM
Actually DDR2
Jebin
Jebin
robertferanec , 12-04-2020, 02:41 AM
I believe, they mean when the tracks are routed in paralel on neighbor layers (on the top of each other).
jebin , 12-05-2020, 02:05 AM
Hi Robert,
Thanks.
Thanks.
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