Set Up KCU105 Board - Set Up KCU105 Board - XAPP1280

UltraScale FPGA Post-Configuration Access of SPI Flash Memory using STARTUPE3 (XAPP1280)

Document ID
XAPP1280
Release Date
2026-01-23
Revision
2.1.3 English
Referring to the following figure:
Figure 1. Connection Diagram for Preliminary Setup

  1. Place switch SW1 to the OFF position and connect the power supply to J15.
  2. Connect the USB cables between the computer and the UART connector (J4) and JTAG connector (J87) on the KCU105 board and the computer.
  3. Set the FPGA M2 pin to 0 by setting DIP switch SW15-6, to OFF as shown in the preceding figure. This selects the FPGA SPI configuration mode (M[2:0] = 001) because the FPGA M[1:0] pins are hard-wired to 01. Ensure DIP switch SW15-5 is in OFF position to disable the SYSCTLR_ENABLE.