User constraint files (ucf), Appendix e: user constraint files (ucf), Appendix e – Digilent 6003-410-000P-KIT User Manual
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XUP Virtex-II Pro Development System
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UG069 (v1.0) March 8, 2005
1-800-255-7778
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Appendix E
User Constraint Files (UCF)
This appendix outlines the User Constraint Files (UCF) that are required to properly define
the signal pinout of the Virtex-II Pro FPGA, as well as the input-output switching levels,
drive strengths, and slew rates. The UCF file information is broken down by function and
only the sections required for the user design need to be included in the UCF file for the
actual design.
Any updates to this information is available on the XUP Virtex-II Pro Development System
support Web site
## PINOUT AND IO DRIVE CHARACTERISTICS FOR THE AUDIO PROCESSING
## SECTION OF THE XUP-V2PRO DEVELOPMENT SYSTEM
## REVISION C PRINTED CIRCUIT BOARD DEC 8 2004
NET "AC97_SDATA_OUT" LOC = "E8";
NET "AC97_SDATA_IN" LOC = "E9";
NET "AC97_SYNCH" LOC = "F7";
NET "AC97_BIT_CLOCK" LOC = "F8";
NET "AUDIO_RESET_Z" LOC = "E6";
NET "BEEP_TONE_IN" LOC = "E7";
NET "AC97_SDATA_OUT" IOSTANDARD = LVTTL;
NET "AC97_SDATA_IN" IOSTANDARD = LVTTL;
NET "AC97_SYNCH" IOSTANDARD = LVTTL;
NET "AC97_BIT_CLOCK" IOSTANDARD = LVTTL;
NET "AUDIO_RESET_Z" IOSTANDARD = LVTTL;
NET "BEEP_TONE_IN" IOSTANDARD = LVTTL;
NET "AC97_SDATA_OUT" DRIVE = 8;
NET "AC97_SYNCH" DRIVE = 8;
NET "AUDIO_RESET_Z" DRIVE = 8;
NET "BEEP_TONE_IN" DRIVE = 8;
NET "AC97_SDATA_OUT" SLEW = SLOW;
NET "AC97_SYNCH" SLEW = SLOW;
NET "AUDIO_RESET_Z" SLEW = SLOW;
NET "BEEP_TONE_IN" SLEW = SLOW;