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Jumpers

ULINK has only two sets of jumpers: Gnd and VCC.

ULINK Adapter Board Jumper
ULINK Adapter - Jumpers (cover off)

The Gnd jumper (Txd/Gnd/Rxd) pins are currently unused. Do not install jumpers on these pins.

The VCC jumper determines the source of VCC power for the JTAG interface.

  • If the target hardware provides VCC to the JTAG interface, set the jumper at VCC to the Ext. position.
  • If the target hardware does not provide VCC to the JTAG interface, set the jumper at VCC to the 3.3V position.

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