DDR3 controller: After Pin Selection with the xdc file ,the sys_clk_p/n doesn't have the option of W11/W12(CC_P/N).(xem7310 board)


#1

Dear all,

I have a question about the ddr3 controller on xem7310.

I want to generate this memory controller using the MIG IP in Vivado. After Pin Selection with the xdc file, the sys_clk_p/n doesn’t have the option of W11/W12(CC_P/N).

the part about sys_clk_p/n in xdc file:

set_property IOSTANDARD LVDS_25 [get_ports {sys_clk_p}]
set_property PACKAGE_PIN W11 [get_ports {sys_clk_p}]

set_property IOSTANDARD LVDS_25 [get_ports {sys_clk_n}]
set_property PACKAGE_PIN W12 [get_ports {sys_clk_n}]

I want to know how to solve this problem?

PS: Vivado 2016.3

Thanks


#2

Note that to select the correct pins for sys_clk_p/n, you must first
select the bank number that the pins are on. For the XEM7310 this is
Bank 13. Once you’ve selected this the W11/W12 should be an option in
the “Pin Number” box for sys_clk_p/n on the “System Signals Selection”
page of the MIG configuration.