Ucf Location Constraints; Address; Data - Xilinx MIcroBlaze Development Spartan-3E 1600E Kit User Manual

Chapter 13: DDR SDRAM

UCF Location Constraints

Address

Figure 13-2
address pins, including the I/O pin assignment and the I/O standard used.

Data

Figure 13-3
pins, including the I/O pin assignment and I/O standard used.
108
www.xilinx.com
provides the User Constraint File (UCF) constraints for the DDR SDRAM
NET "SD_A<12>"
NET "SD_A<11>"
NET "SD_A<10>"
NET "SD_A<9>"
NET "SD_A<8>"
NET "SD_A<7>"
NET "SD_A<6>"
NET "SD_A<5>"
NET "SD_A<4>"
NET "SD_A<3>"
NET "SD_A<2>"
NET "SD_A<1>"
NET "SD_A<0>"
Figure 13-2: UCF Location Constraints for DDR SDRAM Address Inputs
provides the User Constraint File (UCF) constraints for the DDR SDRAM data
NET "SD_DQ<15>" LOC = "H5" | IOSTANDARD = SSTL2_I ;
NET "SD_DQ<14>" LOC = "H6" | IOSTANDARD = SSTL2_I ;
NET "SD_DQ<13>" LOC = "G5" | IOSTANDARD = SSTL2_I ;
NET "SD_DQ<12>" LOC = "G6" | IOSTANDARD = SSTL2_I ;
NET "SD_DQ<11>" LOC = "F2" | IOSTANDARD = SSTL2_I ;
NET "SD_DQ<10>" LOC = "F1" | IOSTANDARD = SSTL2_I ;
NET "SD_DQ<9>"
NET "SD_DQ<8>"
NET "SD_DQ<7>"
NET "SD_DQ<6>"
NET "SD_DQ<5>"
NET "SD_DQ<4>"
NET "SD_DQ<3>"
NET "SD_DQ<2>"
NET "SD_DQ<1>"
NET "SD_DQ<0>"
Figure 13-3: UCF Location Constraints for DDR SDRAM Data I/Os
MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
LOC = "P2" | IOSTANDARD = SSTL2_I ;
LOC = "N5" | IOSTANDARD = SSTL2_I ;
LOC = "T2" | IOSTANDARD = SSTL2_I ;
LOC = "N4" | IOSTANDARD = SSTL2_I ;
LOC = "H2" | IOSTANDARD = SSTL2_I ;
LOC = "H1" | IOSTANDARD = SSTL2_I ;
LOC = "H3" | IOSTANDARD = SSTL2_I ;
LOC = "H4" | IOSTANDARD = SSTL2_I ;
LOC = "E4" | IOSTANDARD = SSTL2_I ;
LOC = "P1" | IOSTANDARD = SSTL2_I ;
LOC = "R2" | IOSTANDARD = SSTL2_I ;
LOC = "R3" | IOSTANDARD = SSTL2_I ;
LOC = "T1" | IOSTANDARD = SSTL2_I ;
LOC = "E1" | IOSTANDARD = SSTL2_I ;
LOC = "E2" | IOSTANDARD = SSTL2_I ;
LOC = "M6" | IOSTANDARD = SSTL2_I ;
LOC = "M5" | IOSTANDARD = SSTL2_I ;
LOC = "M4" | IOSTANDARD = SSTL2_I ;
LOC = "M3" | IOSTANDARD = SSTL2_I ;
LOC = "L4" | IOSTANDARD = SSTL2_I ;
LOC = "L3" | IOSTANDARD = SSTL2_I ;
LOC = "L1" | IOSTANDARD = SSTL2_I ;
LOC = "L2" | IOSTANDARD = SSTL2_I ;
UG257_13_02_060806
UG257_13_03_060806
UG257 (v1.1) December 5, 2007
R