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How to route High-speed SDRAM

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I will layout one PCB  that contains one ARM soc(AT91SAM9261) & one SDRAM(MT48LC16M16A2).
SDARM will connect with ARM soc.

from SDRAM's datasheet, its max clock frequecy is about 133MHz.

for it is the first time for me to layout high-speed board.

how should i do when placing parts and routing?

how to confirm the address/data/clock trace width/length?

thanks


Originally posted in cdnusers.org by watchdog1976
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    In my knowledge the SDRAM should be as close as possible to the processor. Here that is AT91SAM9261 microcontroller. And the address/data traces should be length matched. Make sure about high frequency clock signal. You can refer the data sheet of microcontroller. And also see this link:
    http://www.idt.com/products/getDoc.cfm?docID=6728316
    http://www.cdnusers.org/InterviewDesigninginDDR2memoriesonPCBs/tabid/401/Default.aspx

    Thanks.


    Originally posted in cdnusers.org by shiva
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  • archive


    In my knowledge the SDRAM should be as close as possible to the processor. Here that is AT91SAM9261 microcontroller. And the address/data traces should be length matched. Make sure about high frequency clock signal. You can refer the data sheet of microcontroller. And also see this link:
    http://www.idt.com/products/getDoc.cfm?docID=6728316
    http://www.cdnusers.org/InterviewDesigninginDDR2memoriesonPCBs/tabid/401/Default.aspx

    Thanks.


    Originally posted in cdnusers.org by shiva
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