Note that the header is positioned on the board rotated 180 degrees from the position in which it is shown in the Xilinx documentation. Care must be taken when connecting the flying leads to ensure they are connected to the right pins. Connecting the flying leads to the wrong side of the header will cause all of the leads to short on the digital board's ground plane. This will certainly cause undesired operation, and may or may not cause damage. Improper wiring is most likely to cause damage if one of the flying leads is connected to an odd numbered pin. '''Note from the pinout table below that no flying lead connections should ever be made to the odd numbered pins on the JTAG header.'''
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Note that the header is positioned on the board rotated 180 degrees from the position in which it is shown in the Xilinx documentation. Care must be taken when connecting the flying leads to ensure they are connected to the right pins. Improper wiring will certainly cause undesired operation, and may cause damage as well. Damage is most likely to occur if one of the flying leads is connected to an odd numbered pin, since it will short to the PCB's ground plane. '''Note from the pinout table below that no flying lead connections should ever be made to the odd numbered pins on the JTAG header.'''