Is 1066 Mhz DDR3 devices supported in P1010 processor ?

[ismailkk]

Hi,  I use P1010 in my project. On the current evaluation board i have DDR3 1333 MHZ 9-9-9. but for our design we prefer 1066 Mhz 7-7-7 instead.

Will this be okay with this class of processor? Any way the processor seems to support maximum frequency of 800Mhz. Request an emergency reply.

Regards  Ismail k k

[r8070z · Accepted solution]

DDR3 1066MHz can operate using clock up to 533 MHz . A DDR3 RAM should operate down to 300 MHz (minimal clock frequency supported by DDR3 internal PLL) . Check the prefered DDR3 data sheet for the minimal supported clock frequency. If it supports 400 MHz  then you can use it.

7-7-7-7 or 9-9-9-9 is question to the DDR3 hardware specs, I do not expect that DDR3 1066 noticably faster then DDR3 1333  at same clock of 400MHz.

[addiyi]

According with the P1010 Reference Manual, DDR memory controller operating a maximum 800 Mbps data rate (this means 400 MHz).

Adrian

[Wlodek_D_]

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