Article Details

ID: 5505
Case Type: faq
Category: Lattice IP/Reference Design
Related To: DDR3 SDRAM Controller
Family: LatticeECP5

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Is it possible to connect ECP5 and two modules of MT16JTF1G64HZ-1G1?

The LFE5U-85F-7BG756 device has only 14 DQS groups which are not enough for two 64 bit controller.The user can check if 1 DIMM with dual rank of 64 bit is good for the application. If not , the one 64 bit DDR3 IP and one with less data width bit DDR3 IP may be an option.The max number of DQS shouldn't overflow. Make sure to have enough DQS pins to handle two DDR memories.For the max number of DQS, customer cannot overflow. They need to make sure they have enough DQS pins to handle 2 DDR memories.
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