#======================================================================
#
# alpha_fmc.ucf
# -------------------
# Constraint file for implementing the Cryptech Alpha base
# for the Xilinx Artix-7 200T on the Alpha.
#
#
# Author: Pavel Shatov
# Copyright (c) 2016, NORDUnet A/S All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# - Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# - Neither the name of the NORDUnet nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
#======================================================================
#--------------------------------------------------------------------------------
# GCLK Timing (fixed at 50 MHz)
#--------------------------------------------------------------------------------
NET "gclk_pin" TNM_NET = TNM_gclk;
TIMESPEC TS_gclk = PERIOD TNM_gclk 20 ns HIGH 50%;
#-------------------------------------------------------------------------------
# FMC_CLK Timing (can be up to 90 MHz)
#-------------------------------------------------------------------------------
NET "fmc_clk" TNM_NET = TNM_fmc_clk;
TIMESPEC TS_fmc_clk = PERIOD TNM_fmc_clk 90 MHz HIGH 50%;
#-------------------------------------------------------------------------------
# FPGA Pinout
#-------------------------------------------------------------------------------
#
NET "led_pins<0>" LOC = "U3";
NET "led_pins<1>" LOC = "T1";
NET "led_pins<2>" LOC = "W22";
NET "led_pins<3>" LOC = "AA20";
#
NET "led_pins<*>" IOSTANDARD = "LVCMOS33";
NET "led_pins<*>" SLEW = SLOW;
NET "led_pins<*>" DRIVE = 8;
#
NET "gclk_pin" LOC = "D17" | IOSTANDARD = "LVCMOS33" ;
#
NET "fmc_clk" LOC = "W11" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_ne1" LOC = "V5" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_noe" LOC = "W16" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_nwe" LOC = "AA6" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_nl" LOC = "W17" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_nwait" LOC = "Y6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
#
NET "fmc_a<0>" LOC = "Y17" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<1>" LOC = "AB16" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<2>" LOC = "AA16" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<3>" LOC = "Y16" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<4>" LOC = "AB17" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<5>" LOC = "AA13" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<6>" LOC = "AB13" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<7>" LOC = "AA15" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<8>" LOC = "AB15" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<9>" LOC = "Y13" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<10>" LOC = "AA14" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<11>" LOC = "Y14" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<12>" LOC = "AB10" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<13>" LOC = "V2" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<14>" LOC = "AB12" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<15>" LOC = "AB8" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<16>" LOC = "AA9" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<17>" LOC = "AA8" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<18>" LOC = "Y7" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<19>" LOC = "AB21" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<20>" LOC = "AB22" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<21>" LOC = "AB20" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<22>" LOC = "Y21" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<23>" LOC = "Y22" | IOSTANDARD = "LVCMOS33" ;
#NET "fmc_a<24>" LOC = "AB18" | IOSTANDARD = "LVCMOS33" ;
#NET "fmc_a<25>" LOC = "AA19" | IOSTANDARD = "LVCMOS33" ;
#
NET "fmc_d<0>" LOC = "AB7" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<1>" LOC = "AB6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<2>" LOC = "U1" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<3>" LOC = "U2" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<4>" LOC = "AB11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<5>" LOC = "AA11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<6>" LOC = "Y11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<7>" LOC = "Y12" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<8>" LOC = "Y18" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<9>" LOC = "AA21" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<10>" LOC = "W20" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<11>" LOC = "N15" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<12>" LOC = "U20" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<13>" LOC = "AA1" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<14>" LOC = "AB1" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<15>" LOC = "AB2" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<16>" LOC = "AB3" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<17>" LOC = "Y3" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<18>" LOC = "AA3" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<19>" LOC = "AA5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<20>" LOC = "AB5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<21>" LOC = "Y4" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<22>" LOC = "AA4" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<23>" LOC = "V4" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<24>" LOC = "W10" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<25>" LOC = "R4" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<26>" LOC = "W12" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<27>" LOC = "W14" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<28>" LOC = "V20" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<29>" LOC = "V18" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<30>" LOC = "R21" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<31>" LOC = "P21" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "ct_noise" LOC = "W19" | IOSTANDARD = "LVCMOS33" ;
#-------------------------------------------------------------------------------
# FMC Input Timing
#-------------------------------------------------------------------------------
#
# The following timing values were derived from pages 173-175 of the STM32F429
# datasheet. Control signals NE1, NL and NWE all have different timing values.
# Instead of writing individual constraints for every control signal, the most
# strict constraint is applied to all control signals. This should not cause
# any P&R issues, since Spartan-6 (and Artix-7) can handle 90 MHz easily.
#
# NOE signal is not constrained, since it drives "T" input of IOBUF primitive.
#
# Data and Address buses also have different timings, with Data bus timing being
# more strict. The same approach is used here, i.e. timing for Data bus is
# applied to Address bus too.
#
# Oh, and stupid datasheet doesn't explicitly specify hold time for the data bus!
#
NET "fmc_d<*>" TNM = "TNM_FMC_IN_DATA" ;
NET "fmc_a<*>" TNM = "TNM_FMC_IN_ADDR" ;
NET "fmc_ne1" TNM = "TNM_FMC_IN_CONTROL" ;
NET "fmc_nl" TNM = "TNM_FMC_IN_CONTROL" ;
NET "fmc_nwe" TNM = "TNM_FMC_IN_CONTROL" ;
TIMEGRP "TNM_FMC_IN_DATA" OFFSET = IN 3.0 ns VALID 6.0 ns BEFORE "fmc_clk" RISING ;
TIMEGRP "TNM_FMC_IN_ADDR" OFFSET = IN 3.0 ns VALID 6.0 ns BEFORE "fmc_clk" RISING ;
TIMEGRP "TNM_FMC_IN_CONTROL" OFFSET = IN 5.0 ns VALID 10.0 ns BEFORE "fmc_clk" RISING ;
#-------------------------------------------------------------------------------
# FMC Output Timing
#-------------------------------------------------------------------------------
#
# NWAIT signal is not constrained, since it is polled by STM32.
#
NET "fmc_d<*>" TNM = "TNM_FMC_OUT_DATA" ;
TIMEGRP "TNM_FMC_OUT_DATA" OFFSET = OUT 16.7 ns AFTER "fmc_clk" FALLING;
#-------------------------------------------------------------------------------
# CDC Paths
#-------------------------------------------------------------------------------
INST "fmc/fmc_cdc/cdc_fmc_sys/src_ff" TNM = "TNM_from_fmc_clk";
INST "fmc/fmc_cdc/cdc_fmc_sys/src_latch*" TNM = "TNM_from_fmc_clk";
INST "fmc/fmc_cdc/cdc_fmc_sys/ff_sync*" TNM = "TNM_to_sys_clk";
INST "fmc/fmc_cdc/cdc_fmc_sys/dst_latch*" TNM = "TNM_to_sys_clk";
INST "fmc/fmc_cdc/cdc_sys_fmc/src_ff" TNM = "TNM_from_sys_clk";
INST "fmc/fmc_cdc/cdc_sys_fmc/src_latch*" TNM = "TNM_from_sys_clk";
INST "fmc/fmc_cdc/cdc_sys_fmc/ff_sync*" TNM = "TNM_to_fmc_clk";
INST "fmc/fmc_cdc/cdc_sys_fmc/dst_latch*" TNM = "TNM_to_fmc_clk";
TIMESPEC "TS_fmc_clk_2_sys_clk" = FROM "TNM_from_fmc_clk" TO "TNM_to_sys_clk" TIG;
TIMESPEC "TS_sys_clk_2_fmc_clk" = FROM "TNM_from_sys_clk" TO "TNM_to_fmc_clk" TIG;
#======================================================================
# EOF alpha_fmc.ucf
#======================================================================
