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AD9082 FMCA EBZ external clock

Category: Hardware


I have an AD9082 FMCA EBZ evaluation board driven by a Xilinx ZCU102 FPGA board.

I'm just wondering how it's possible to feed the board with an external clock.

The clock architecture in Figure 14 of the user guide suggests using EXT_CLK and EXT_SYS connectors to feed the chip itself. 

But then how to feed the FPGA board with the related external clock?

Of course, I can use other FPGA pins (from the other FMC for example) to get MGT clocks from an external source, but my concern is that those clocks are not in the same bank as the AD9082 JESD pins are connected to.

Does it make a problem?

Top Replies

    •  Analog Employees 
    Nov 4, 2022 in reply to SAH +1 verified

    Hello  ,

    I think you can use the USER_SMA_MGT_CLOCK_C as an external ref clock which is connected to BANK 129. In the current design BANK 229 and 228 are used for the transceivers logic through FMC0.