P3041 DDR3

[hammadnayeem]

For a project, We need support for DDR3 connectivity (with register functionality) for following cases for P3041 Processor -

Case (1) How would we connect DDR3 Memory chip (without ECC Functionality) to P3041 Processor (using ECC Functionality of Processor) , and

Case (2) How would we connect DDR3 Memory (with ECC Functionality) to P3041 Processor (without using ECC Functionality of Processor).

We would not be using DIMM connectivity in either of the cases . Pls elaborate direct pin to pin connectivity.

We would be using16 bit memories for both cases.

In Case(1), we will use 72 bit (64 + 8 ECC Bits) interface of the P3041 ,thus requiring 5 memory chips (without ECC functionality). Only 8 bits of 5th memory chip shall be used (4x16+8)

In Case (2) we will use 64 bit interface of processor , thus requiring 4 memory chips (with ECC Functionality)

[hwrobel]

Follow AN3940 and AN4039. To do that, pick DDR3 chips from a reputable manufacturer that comply to the supported memory organizations in the CPUs Reference Manual. U-Boot sources and AN3532 can be helpful for bringup.

[hammadnayeem]

Ok So the 5 chip configuration and 4 chip configuration as in cases(1) and (2) respectively are feasible ?