6
XCM-305 Series v1.2
3.
Configuration Switch
The specification of configuration switch is below. “ON” means “Low (Ground)”.
Position No.
1
2
3
4
5
6
7
8
Net Label
X_PROG
X_M0
X_M1
X_M2
VS2
VS1
VS0
X_SUSPEND
Default
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
Function
Target select
Mode Select Pin
SPI Configuration Mode
Suspend Mode
Configuration Mode
X_M0
X_M1
X_M2
Master SPI
OFF
ON
ON
JTAG
OFF
ON
OFF
1 : Target select
OFF : JTAG (FPGA)
ON : Configuration Device (SPI-PROM)
2 - 4 : Configuration Mode Select
Master SPI Mode : Configuration device access
JTAG Mode : FPGA access
5 - 7 : SPI Configuration Mode
It instructs the FPGA how to communicate with the configuration device.
Please use it in default setting.
8 : Suspend Mode
It controls suspend mode of the FPGA. Please see a Spartan-3A data sheet for
more detail.
