Hello,
I checked the circuit of c6678 evaluation board. There are five DDR3 memories on eva board, but I will use three DDR3.
I don't have any experience about DDR3, so I need some advice relating below.
Q1> Please check my design plan
The DDR3 I will use is 2Gbit with 16bit data lines. I will use three DDR3 - two is for data and one is for ECC.
Data line: I will connect only 32bit(DDRD00~DDRD31] to DDR3 and let DDRD32~DDRD63 floating.
Address line: I will connect DDRA00~DDRA13 to DDR3 and let DDRA14~DDRA15 floating.
ECC: I will connect DDRCB00~DDRCB03 to DDR3 and let DDRCB04~DDRCB07 floating
Data strobe: I will connect DQS0/1 to first data DDR3, DQS2/3 to second DDR3 and DQS8 to ECC
Q2> On the eva b'd circuit, there is comment about fly-by routing order. The order is '0, 1, 2, 3, ECC, 4, 5, 6, 7'
I don't understand what the number(0 ~ 7) mean.
There are three DDR3 on my application. Let me know the order for my application.