Digilent 410-087P-KIT User Manual
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Spartan-3E Start Kit Board User Guide
UG230 (v1.0) March 9, 2006
Appendix B: Example User Constraints File (UCF)
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NET "SF_OE" LOC = "C18" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW ;
NET "SF_STS" LOC = "B18" | IOSTANDARD = LVCMOS33 ;
NET "SF_WE" LOC = "D17" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW ;
# ==== STMicro SPI serial Flash (SPI) ====
# some connections shared with SPI Flash, DAC, ADC, and AMP
NET "SPI_MISO" LOC = "N10" | IOSTANDARD = LVCMOS33 ;
NET "SPI_MOSI" LOC = "T4" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6 ;
NET "SPI_SCK" LOC = "U16" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6 ;
NET "SPI_SS_B" LOC = "U3" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6 ;
NET "SPI_ALT_CS_JP11" LOC = "R12" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6 ;
# ==== Slide Switches (SW) ====
NET "SW<0>" LOC = "L13" | IOSTANDARD = LVTTL | PULLUP ;
NET "SW<1>" LOC = "L14" | IOSTANDARD = LVTTL | PULLUP ;
NET "SW<2>" LOC = "H18" | IOSTANDARD = LVTTL | PULLUP ;
NET "SW<3>" LOC = "N17" | IOSTANDARD = LVTTL | PULLUP ;
# ==== VGA Port (VGA) ====
NET "VGA_BLUE" LOC = "G15" | IOSTANDARD = LVTTL | DRIVE = 8 | SLEW = FAST ;
NET "VGA_GREEN" LOC = "H15" | IOSTANDARD = LVTTL | DRIVE = 8 | SLEW = FAST ;
NET "VGA_HSYNC" LOC = "F15" | IOSTANDARD = LVTTL | DRIVE = 8 | SLEW = FAST ;
NET "VGA_RED" LOC = "H14" | IOSTANDARD = LVTTL | DRIVE = 8 | SLEW = FAST ;
NET "VGA_VSYNC" LOC = "F14" | IOSTANDARD = LVTTL | DRIVE = 8 | SLEW = FAST ;
# ==== Xilinx CPLD (XC) ====
NET "XC_CMD<0>" LOC = "P18" | IOSTANDARD = LVTTL | DRIVE = 4 | SLEW = SLOW ;
NET "XC_CMD<1>" LOC = "N18" | IOSTANDARD = LVTTL | DRIVE = 4 | SLEW = SLOW ;
NET "XC_CPLD_EN" LOC = "B10" | IOSTANDARD = LVTTL ;
NET "XC_D<0>" LOC = "G16" | IOSTANDARD = LVTTL | DRIVE = 4 | SLEW = SLOW ;
NET "XC_D<1>" LOC = "F18" | IOSTANDARD = LVTTL | DRIVE = 4 | SLEW = SLOW ;
NET "XC_D<2>" LOC = "F17" | IOSTANDARD = LVTTL | DRIVE = 4 | SLEW = SLOW ;
NET "XC_TRIG" LOC = "R17" | IOSTANDARD = LVCMOS33 ;
NET "XC_GCK0" LOC = "H16" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW ;
NET "GCLK10" LOC = "C9" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW ;