Ucf Location Constraints; Related Resources - Xilinx MIcroBlaze Development Spartan-3E 1600E Kit User Manual

R
DS2432 1-Wire SHA-1 EEPROM
The MicroBlaze Development Kit board includes a Maxim DS2432 serial EEPROM with an
integrated SHA-1 engine. As shown in
1-Wire interface, which uses a single wire for power and serial communication.
The DS2432 EEPROM offers one of many possible means to copy and protect the FPGA
configuration bitstream, thereby making cloning difficult. Xilinx application note
XAPP780, listed under
method.

UCF Location Constraints

Figure 17-2
EEPROM, including the I/O pin assignment and the I/O standard used.

Related Resources

MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
UG257 (v1.1) December 5, 2007
"Related Resources"
Spartan-3E FPGA
provides the UCF constraints for the FPGA connections to the DS2432 SHA-1
NET "DS_WIRE" LOC = "U4" | IOSTANDARD = LVCMOS33 | SLEW = SLOW
Figure 17-2: UCF Location Constraints for DS2432 SHA-1 EEPROM
Maxim DS2432 1-Wire EEPROM with SHA-1 Engine
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2914
XAPP780: FPGA IFF Copy Protection Using Dallas Semiconductor/Maxim DS2432 Secure
EEPROMs
http://www.xilinx.com/bvdocs/appnotes/xapp780.pdf
Figure 17-1, the DS2432 EEPROM uses the Maxim
provides one possible implementation
3.3v
Maxim DS2432
SHA-1 EEPROM
(U4)
DS_WIRE
Figure 17-1: SHA-1 EEPROM
Chapter 17
GND
UG257_16_01_060806
| DRIVE = 8 ;
UG257_17_02_061606
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