JTAG-SMT3 and JTAG-SMT4 Vivado Support

[rpatel]

What vivado versions do JTAG-SMT3-NC and JTAG-SMT4 support? Do they support the latest versions up to 23.2? Do both support JTAG to Virtex Ultrascale+ FPGAs?

Thanks.

[JColvin]

Hi @rpatel,

The JTAG SMT3 is natively supported by Vivado from version 2014.1 onwards, and the JTAG SMT4 is supported by Vivado 2020.1 onwards, as per the comparison chart here: https://digilent.com/reference/programmers/start.

In terms of product support, both devices should support Virtex Ultrascale+ devices. The list of supported target devices, as provided to Digilent by Xilinx, is listed in their respective reference manuals, https://digilent.com/reference/programmers/jtag-smt3/reference-manual#supported_target_devices and https://digilent.com/reference/programmers/jtag-smt4/reference-manual#supported_target_devices.

Let me know if you have any questions.

Thanks,
JColvin

[rpatel]

Thanks for the support. Is there any difference between JTAG SMT3 and SMT4? The number of UART channels and the version of vivado are two but are there any others?

[JColvin]

Hi @rpatel,

The other differences between the JTAG SMT3 and the JTAG SMT4 besides the two extra UART channels on the SMT4 compared to the SMT3 and the difference in AMD software suite compatibility that I am aware of are as follows:

• SMT3 has separate variable voltage support for its UART channel (1.8 V to 5.5 V)
  • SMT4 does not have variable voltage support for its 3 UART channels, instead using the 3.3 V Vdd supply
• SMT3 variable JTAG reference voltage ranges from 1.8 V to 5.5 V
  • SMT4 variable JTAG reference voltage ranges from 1.8 V to 3.3 V
• SMT4 has both a PS_SRST_B pin and a PS_POR_B pin to perform software resets for Zynq platforms
  • SMT3 only has PS_SRST_B
• Related to the above three, the DC Operating Characteristics (see the named section in each of their Reference Manuals) are correspondingly different
  • A less expected change is that VBus_Detect on the SMT4 has a higher minimum voltage
• While the outside dimensions of the two modules are the same, the landing pattern and dimensions of the individual pads are, of course, different

Thanks,
JColvin