Regarding DDR3 for iMX6 Quad

[SreedharNair]

Hi Guys,

I have few more doubts regarding ddr3 for imx6,

1, Is it possible to design the imx6 with only one ddr3 chip (512 MB) ? The imx6 design guide shows 2 Gbyte and 4 Gbyte configurations which has 4 and 8 chips respectively. If we can design with one chip then does it mean the layout is in flyby topology and we need to include termination resistors?

2, Is there any difference between layout requirements for ddr3 and ddr3L other than the voltage requirement for imx6 ?

Regards,
Sreedhar

[igorpadykov · Accepted solution]

Hi SreedharNair

1.> Is it possible to design the imx6 with only one ddr3 chip (512 MB) ?

yes

> If we can design with one chip then does it mean the layout is in flyby

>topology and we need to include termination resistors?

no need for flyby and termination.

2. no differencies

Best regards
igor

[SreedharNair]

@igorpadykov  Thanks so much for your reply.

I have one more query if we are using byte group 1 and 2 for the single memory chip, What is to be done with the remaining byte group pads? Do we leave then not connected or do we have to ground then?

Thanks in Advance,

Sreedhar

[igorpadykov]

Hi SreedharNair

they can be left unconnected.

Best regards
igor

[igorpadykov]

Hi SreedharNair

they can be left unconnected.

Best regards
igor