Ucf Location Constraints; Address - Xilinx Spartan-3A User Manual

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Table 11-2: Possible Potential Competing Devices on SPI_MISO (NF_D<0>) Data

UCF Location Constraints

Address

Figure 11-2
assignment and the I/O standard used.
Spartan-3A/3AN Starter Kit Board User Guide
UG334 (v1.0) May 28, 2007
Signal or
Disabled Device
Jumper
Jumper J46 Platform Flash PROM.
FPGA_INIT_B
SPI_SS_B SPI Flash PROM selected by
Jumper J1, as shown in
Table 12-2, page
ALT_SS_B SPI Flash PROM selected by
Jumper J1, as shown in
Table 12-2, page
provides the UCF constraints for the Flash address pins, including the I/O pin
NET "NF_A<24>" LOC = "A11" |
NET "NF_A<23>" LOC = "N11" |
NET "NF_A<22>" LOC = "V12" |
NET "NF_A<21>" LOC = "C21" |
NET "NF_A<20>" LOC = "C22" |
NET "NF_A<19>" LOC = "F21" |
NET "NF_A<18>" LOC = "F22" |
NET "NF_A<17>" LOC = "H20" |
NET "NF_A<16>" LOC = "H21" |
NET "NF_A<15>" LOC = "G22" |
NET "NF_A<14>" LOC = "H22" |
NET "NF_A<13>" LOC = "J20" |
NET "NF_A<12>" LOC = "J21" |
NET "NF_A<11>" LOC = "J22" |
NET "NF_A<10>" LOC = "K22" |
NET "NF_A<9>" LOC = "N17" |
NET "NF_A<8>" LOC = "N18" |
NET "NF_A<7>" LOC = "N19" |
NET "NF_A<6>" LOC = "N20" |
NET "NF_A<5>" LOC = "N21" |
NET "NF_A<4>" LOC = "N22" |
NET "NF_A<3>" LOC = "P18" |
NET "NF_A<2>" LOC = "R19" |
NET "NF_A<1>" LOC = "T18" |
NET "NF_A<0>" LOC = "T17" |
# Upper four address lines, NF_A<25:22>, are unconnected using a 32Mbit Flash
# They are available as user I/Os but do not connect to anything on the board
CONFIG PROHIBIT = B22;
CONFIG PROHIBIT = B21;
CONFIG PROHIBIT = G18;
CONFIG PROHIBIT = G17;
Figure 11-2: UCF Location Constraints for Flash Address Signals
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Disable Value
Set to "Disabled" or "Enable
during Configuration" as
shown in
FPGA_INIT_B has no effect.
If set to "Always Enabled," then
FPGA_INIT_B must be 1
93.
93.
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 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
IOSTANDARD = LVCMOS33 |
UCF Location Constraints
Table 4-2, page 40.
1
1
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
DRIVE = 4 | SLEW = SLOW ;
87