Part Number:AM3352
Tool/software: Linux
DDR3 Part: H5TQ4G63EFR-RDC (256M x 16)
Trace Lengths (inches):
DDR_CK trace - Byte 0 : 0.635335 Byte 1 : 0.635335
DDR_DQSx trace - Byte 0 : 1.100645 Byte 1 : 1.09342
Received Seed values from RatioSeed excel sheet:
RD_DQS : 40
FIFO_WE : F4
WR_DQS : 77
With above mentioned seed values, DDR3 software leveling is not working, we are getting all the optimum values as 0x0.
But if we use below mentioned different seed values then we are getting the optimum values.
Seed values: RD_DQS - 0x20, FIFO_WE - 0xE0, WR_DQS - 0xAF
Can anyone please help why the seed values calculated from RatioSeed excel sheet are not working?