Additional information
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 XILINXTM 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 XILINXTM 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 XILINXTM parallel cable IV the led lights green if FPGA is powered on. Now start XILINXTM iMPACT, select Boundary Scan mode and follow the manual provided by XILINXTM 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. |
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SPI-Flash Direct Programming using iMPACT
Out of the box Direct SPI Programming via XILINXTM download cable and iMPACT
USBS6 / C1030-5510 | | http://www.cesys.com/ |
User Doc V0.3 | -60- | preliminary |
