ZCU102 Digilent USB-to-JTAG Module, Circuit, Pictures and Diagram

Updated: Sep 11, 2018

This post contains details about the ZCU102's USB-to-JTAG Digilent module, the circuit its used in, a picture of the components on the board and a diagram of the resultant JTAG chain.


The ZCU102 allows JTAG to be used over USB with a Digilent USB JTAG-to-USB module.

The module is available at [link].

Info from the ZCU102 BOM:

  • Reference designation on board: U21

  • Device: USB Module


  • Manufactured and distributed by Digilent

  • Manufacturer part number: JTAG-SMT2-NC

  • Distributor part number: 410-308P



JTAG_TDI, JTAG_TMS and JTAG_TCK also route to J6, U48 and the Zynq UltraScale+ MPSoC as seen at [link].

When used without FMC cards, the JTAG chain from the DIGILENT_USB_JTAG_2_NC looks like:

Diagram available at [link].


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