X21976-112818
See the VCU128 System Controller Tutorial (XTP534) and the VCU128 Software Install and Board
Setup Tutorial (XTP535) for more information on installing and using the System Controller utility.
Configuration Options
, callout 36]
The VCU128 board supports two of the seven UltraScale™ FPGA configuration modes.
• Master SPI using the onboard 2 Gbit Quad SPI flash memory
• JTAG using:
○
USB JTAG configuration port J2 (FTDI FT4232H bridge U8)
○
Xilinx
®
platform cable 2 mm, keyed flat cable header (J4)
Each configuration interface corresponds to one or more configuration modes and bus widths as
listed in the following table. The mode switches M2, M1, and M0 are on 4-pole DIP SW1
positions 2, 3, and 4, respectively. The FPGA default mode setting M[2:0] = 001, selecting the
master SPI configuration mode.
Table 34: Board FPGA Configuration Modes
Configuration Mode
SW16 DIP Switch
Settings (M[2:0])
Bus Width
CCLK Direction
Master SPI
1
x1, x2, x4
Output
JTAG
101
x1
Not applicable
The following figure shows mode switch SW1.
Chapter 3: Board Component Descriptions
UG1302 (v1.1) April 21, 2021
VCU128 Board User Guide
91