Digilent JTAG-SMT3-NC: Surface-Mount Programming Module

The Joint Test Action Group (JTAG) -SMT3-NC is a compact, complete, andfully self-contained surface-mount programming module for Xilinxfield-programmable gate arrays (FPGAs). The module can be accessed directlyfrom all Xilinx Tools, including iMPACT, ChipScope, Vivado, and EDK. Userscan load the module directly onto a target board and reflow it like anyother component. The JTAG-SMT3-NC uses a 3.3V main power supply andindependent Vref supplies to drive the JTAG and UART signals. All JTAGsignals use high speed 24mA three-state buffers that allow signal voltagesfrom 1.8V to 5.5V, and bus speeds up to 30MBit/sec.

All UART signals usehigh speed 24mA buffers that allow signal voltages from 1.8V to 5.5V andbus speeds up to 12Mbaud. The JTAG bus can be shared with other devices asthe SMT3-NC signals are held at high impedance, except when actively drivenduring programming. The SMT3-NC module is CE certified and fully compliantwith EU RoHS and REACH directives. The module routes the USB D+ (DP) and D- (DM) signals out to pads, providing the system designer with the ability tochoose the type of USB connector and its location on the system board.