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Contributor
Contributor
2,384 Views
Registered: ‎06-02-2014

About Reset pin in PS DDR dedicated pins

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Hi. In PS DDR controller pins I have one called "PS_DDR_DRST_B". So I look for the corresponding pin on my memory chip device. The problem is that my chip doen't hace such pin. This memory is DDR2 and the part number is MT47H64M8CF-25E IT . Is importan to me to know if this situation is normal in DDR2 chips and where I have to connect this pin in case. Pull up to VCCO_DDR? If someone can clarify me about this...

 

Regards

 

Santi

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Xilinx Employee
Xilinx Employee
3,142 Views
Registered: ‎07-11-2011

Re: About Reset pin in PS DDR dedicated pins

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Hi,

 

DDR2 do not have reset pin for the chip so you can leave it unconnected.

Please refer Table named "DDR unused Pins" of UG933 for more details

http://www.xilinx.com/support/documentation/user_guides/ug933-Zynq-7000-PCB.pdf

 

 

Hope this helps

 

 

Regards,

Vanitha

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Xilinx Employee
Xilinx Employee
3,143 Views
Registered: ‎07-11-2011

Re: About Reset pin in PS DDR dedicated pins

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Hi,

 

DDR2 do not have reset pin for the chip so you can leave it unconnected.

Please refer Table named "DDR unused Pins" of UG933 for more details

http://www.xilinx.com/support/documentation/user_guides/ug933-Zynq-7000-PCB.pdf

 

 

Hope this helps

 

 

Regards,

Vanitha

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Please do google search before posting, you may find relavant information.
Mark the post - "Accept as solution" and give kudos if information provided is helpful and reply oriented

View solution in original post

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Contributor
Contributor
2,355 Views
Registered: ‎06-02-2014

Re: About Reset pin in PS DDR dedicated pins

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Thanks, it helps.

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