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Appendix B: Example User Constraints File (UCF)
NET "E_MDIO"
LOC = "U5"
NET "E_RX_CLK" LOC = "V3"
NET "E_RX_DV"
LOC = "V2"
NET "E_RXD<0>" LOC = "V8"
NET "E_RXD<1>" LOC = "T11" | IOSTANDARD = LVCMOS33 ;
NET "E_RXD<2>" LOC = "U11" | IOSTANDARD = LVCMOS33 ;
NET "E_RXD<3>" LOC = "V14" | IOSTANDARD = LVCMOS33 ;
NET "E_RXD<4>" LOC = "U14" | IOSTANDARD = LVCMOS33 ;
NET "E_TX_CLK" LOC = "T7"
NET "E_TX_EN"
LOC = "P15" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
NET "E_TXD<0>" LOC = "R11" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
NET "E_TXD<1>" LOC = "T15" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
NET "E_TXD<2>" LOC = "R5"
NET "E_TXD<3>" LOC = "T5"
NET "E_TXD<4>" LOC = "R6"
# ==== FPGA Configuration Mode, INIT_B Pins (FPGA) ====
NET "FPGA_M0"
NET "FPGA_M1"
NET "FPGA_M2"
NET "FPGA_INIT_B" LOC = "T3"
NET "FPGA_RDWR_B" LOC = "U10" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
NET "FPGA_HSWAP"
# ==== FX2 Connector (FX2) ====
NET "FX2_CLKIN"
LOC = "E10" | IOSTANDARD = LVCMOS33 ;
NET "FX2_CLKIO"
LOC = "D9"
NET "FX2_CLKOUT" LOC = "D10" | IOSTANDARD = LVCMOS33
# These four connections are shared with the J1 6-pin accessory header
NET "FX2_IO<1>"
LOC = "B4"
NET "FX2_IO<2>"
LOC = "A4"
NET "FX2_IO<3>"
LOC = "D5"
NET "FX2_IO<4>"
LOC = "C5"
# These four connections are shared with the J2 6-pin accessory header
NET "FX2_IO<5>"
LOC = "A6"
NET "FX2_IO<6>"
LOC = "B6"
NET "FX2_IO<7>"
LOC = "E7"
NET "FX2_IO<8>"
LOC = "F7"
# These four connections are shared with the J4 6-pin accessory header
NET "FX2_IO<9>"
LOC = "D7"
NET "FX2_IO<10>" LOC = "C7"
NET "FX2_IO<11>" LOC = "F8"
NET "FX2_IO<12>" LOC = "E8"
# The discrete LEDs are shared with the following 8 FX2 connections
#NET "FX2_IO<13>" LOC = "F9"
#NET "FX2_IO<14>" LOC = "E9"
#NET "FX2_IO<15>" LOC = "D11" | IOSTANDARD = LVCMOS33
#NET "FX2_IO<16>" LOC = "C11" | IOSTANDARD = LVCMOS33
#NET "FX2_IO<17>" LOC = "F11" | IOSTANDARD = LVCMOS33
#NET "FX2_IO<18>" LOC = "E11" | IOSTANDARD = LVCMOS33
#NET "FX2_IO<19>" LOC = "E12" | IOSTANDARD = LVCMOS33
#NET "FX2_IO<20>" LOC = "F12" | IOSTANDARD = LVCMOS33
NET "FX2_IO<21>" LOC = "A13" | IOSTANDARD = LVCMOS33
NET "FX2_IO<22>" LOC = "B13" | IOSTANDARD = LVCMOS33
NET "FX2_IO<23>" LOC = "A14" | IOSTANDARD = LVCMOS33
NET "FX2_IO<24>" LOC = "B14" | IOSTANDARD = LVCMOS33
NET "FX2_IO<25>" LOC = "C14" | IOSTANDARD = LVCMOS33
NET "FX2_IO<26>" LOC = "D14" | IOSTANDARD = LVCMOS33
160
| IOSTANDARD = LVCMOS33 | SLEW = SLOW
| IOSTANDARD = LVCMOS33 ;
| IOSTANDARD = LVCMOS33 ;
| IOSTANDARD = LVCMOS33 ;
| IOSTANDARD = LVCMOS33 ;
| IOSTANDARD = LVCMOS33 | SLEW = SLOW
| IOSTANDARD = LVCMOS33 | SLEW = SLOW
| IOSTANDARD = LVCMOS33 | SLEW = SLOW
LOC = "M10" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
LOC = "V11" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
LOC = "T10" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
| IOSTANDARD = LVCMOS33 | SLEW = SLOW
LOC = "B3"
| IOSTANDARD = LVCMOS33 ;
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
| IOSTANDARD = LVCMOS33
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| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 8 ;
| DRIVE = 4 ;
| DRIVE = 4 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
| SLEW = FAST
| DRIVE = 8 ;
Spartan-3E Start Kit Board User Guide
UG230 (v1.0) March 9, 2006
R
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