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Using SPI-Flash for configuration
How to store configuration data in SPI-Flash
To allow configuration of the FPGA via onboard SPI-Flash on power-up first an appropriate
configuration file has to be stored in the SPI-Flash. There are several ways to accomplish
this.
Loading SPI-Flash via USB
The easiest way to get data into SPI-Flash surely is to use CESYS software UDK-Lab.
With the help of this easy to use tiny tool binary FPGA configuration bitstreams (*.bin) can
be downloaded to onboard SPI-Flash via USB.
SPI-Flash Indirect Programming Using FPGA JTAG Chain
Since XILINX
TM
ISE-WebPACK version 10.1 it is possible to configure SPI-Flashes
attached to the FPGA via JTAG interface. Before starting to download a design to SPI-
Flash with iMPACT programming software it is necessary to prepare the required *.mcs
SPI PROM file. With xapp951 XILINX
TM
provides an application note how to accomplish
that using iMPACT or PROMGen software tools. Select 16M SPI PROM Density when
asked. Thereafter connect JTAG adapter and power-up USBS6, either by connecting USB
cable or via external 5V power supply. With XILINX
TM
parallel cable IV the led lights green if
FPGA is powered on. Now start XILINX
TM
iMPACT, select Boundary Scan mode and follow
the manual provided by XILINX
TM
in xapp951. Select M25P16 SPI-Flash PROM Type
when asked.
SPI-Flash
M25P16 Signal Name FPGA IO FPGA Direction Comment
D MOSI T13 Output Master SPI Serial Data Output.
Q MISO R13 Input Master SPI Serial Data Input.
S CSO_B V3 Output Master SPI Chip Select Output.
C CCLK R15 Output Configuration Clock.
W WP# -- Externally pulled HIGH via 4,7kOhm resistor.
HOLD HOLD# -- Externally pulled HIGH via 4,7kOhm resistor.
SPI-Flash Direct Programming using iMPACT
Out of the box Direct SPI Programming via XILINX
TM
download cable and iMPACT
USBS6 / C1030-5510 http://www.cesys.com/
User Doc V0.3 -60- preliminary