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IMX6Q the clk of DDR3 when using fly-by topology (Very Urgent)

Question asked by wei vivien on Jan 29, 2018
Latest reply on Jan 29, 2018 by wei vivien

hello,

We have a very urgent problem about iMX6Q and DDR3.

According to the design of IMX6Q reference design, it use four DDR chips with T-topology and use two pair of CLK(CLK0 CLK0# and CLK1 CLK1#) and one cs signal.

In our design, we have a special cross section of PCB, so we can't use T-topology, so we decide to use fly-by topology.

BUT, we have question ahout CLK and CS.

Could we still use 2 pair of clk and  ONE CS signal to monitor 4 chips of DDR3(just like the schematic of reference design in T-topology and add termination res).or we have to use 1 pair of clk and 1CS signal to control 4 DDR chips

 

thank you very much!

 

vivien

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