Sundance SMT784 - Manual (Page 11)

User Manual SMT784 Page 11 of 31 Last Edited: 19/03/2009 14:12:00
5 System Overview
5.1 FPGA
The SMT784 uses a Xilinx Virtex 5 LXT or SXT to implement in firmware the
interfaces the board provides.
Configuration of the FPGA is from one of two sources: on-board flash memory or a
Xilinx JTAG header.
A connector is specifically dedicated for FPGA and CPLD detection and
programming. Both the CPLD and the FPGA are part of the JTAG chain. A 14-
position (2x7) connector (2mm) is available and shows TDI, TDO, TCK and TMS
lines, as well as a ground and a reference voltage, as shown below:
Figure 3 JTAG pin-out
This connector has been chosen because it can connect easily to a Xilinx Parallel IV
cable using the ribbon cable provided by Xilinx.