Data Sheet

10/3/2018 JTAG-SMT3-NC Reference Manual [Reference.Digilentinc]
https://reference.digilentinc.com/reference/programmers/jtag-smt3/reference-manual 13/16
Symbol Parameter Min Typ Max Unit
TA Operating Temperature -40 85 ºC
The JTAG-SMT3-NC’s JTAG signals operate according to the timing diagram in Fig. 7. The SMT3-NC () supports JTAG/TCK
frequencies from 30 MHz () to 8 KHz at integer divisions of 30 MHz () from 1 to 3750. Common frequencies include 30 MHz (), 15 MHz
(), 10 Mhz, 7.5 MHz (), and 6 MHz () (see Table 2). The JTAG/TCK operating frequency can be set within the Xilinx tools.
Note: Please refer to Xilinx’s iMPACT documentation for more information.
The JTAG-SMT3-NC () module has a moisture sensitivity level (MSL) of 6. Prior to reflow, the JTAG-SMT3-NC () module must be dried
by baking it at 125° C for 17 hours. Once this process has been completed, the module has a MSL of 3 and is suitable for reflow for up to
168 hours without additional drying.
The factory finishes the JTAG-SMT3-NC () signal pads with the ENIG process using 2u” gold over 150u” electroless nickel. This makes
the SMT3-NC () compatible with most mounting and reflow processes (see Fig. 8). The binding force of the solder is sufficient to hold the
SMT3-NC () firmly in place, so mounting should require no additional adhesives.
AC Operating Characteristics
Mounting to Host PCBs