#======================================================================
#
# alpha_fmc.ucf
# -------------------
# Constraint file for implementing the Cryptech Alpha base
# for the Xilinx Spartan6 LX45 on the Alpha.
#
#
# Author: Pavel Shatov
# Copyright (c) 2014, 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.
#
#======================================================================
#-------------------------------------------------------------------------------
CONFIG VCCAUX = 3.3;
#-------------------------------------------------------------------------------
#--------------------------------------------------------------------------------
# GCLK Timing (fixed at 50 MHz)
#--------------------------------------------------------------------------------
NET "gclk_p_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_pin" LOC = "A16" | IOSTANDARD = "LVCMOS33" | SLEW = "SLOW" | DRIVE = 8;
NET "apoptosis_pin" LOC = "K1" | IOSTANDARD = "LVCMOS33" | SLEW = "SLOW" | DRIVE = 8;
NET "reset_mcu_b_pin" LOC = "F1" | IOSTANDARD = "LVCMOS33" | PULLUP;
#
NET "gclk_p_pin" LOC = "H2" | IOSTANDARD = "LVDS_25" | DIFF_TERM = "TRUE";
NET "gclk_n_pin" LOC = "H1" | IOSTANDARD = "LVDS_25" | DIFF_TERM = "TRUE";
#
NET "fmc_clk" LOC = "T8" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_ne1" LOC = "R7" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_noe" LOC = "R8" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_nwe" LOC = "V11" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_nl" LOC = "T7" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_nwait" LOC = "V8" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
#
NET "fmc_a<0>" LOC = "V7" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<1>" LOC = "M5" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<2>" LOC = "L4" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<3>" LOC = "M3" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<4>" LOC = "L3" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<5>" LOC = "P2" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<6>" LOC = "K3" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<7>" LOC = "K4" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<8>" LOC = "R3" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<9>" LOC = "T3" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<10>" LOC = "V4" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<11>" LOC = "T4" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<12>" LOC = "J3" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<13>" LOC = "J1" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<14>" LOC = "J6" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<15>" LOC = "U16" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<16>" LOC = "M1" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<17>" LOC = "F2" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<18>" LOC = "R11" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<19>" LOC = "V5" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<20>" LOC = "G1" | IOSTANDARD = "LVCMOS33" ;
NET "fmc_a<21>" LOC = "T2" | IOSTANDARD = "LVCMOS33" ;
#NET "fmc_a<22>" LOC = " " | IOSTANDARD = "LVCMOS33" ;
#NET "fmc_a<23>" LOC = " " | IOSTANDARD = "LVCMOS33" ;
#NET "fmc_a<24>" LOC = " " | IOSTANDARD = "LVCMOS33" ;
#NET "fmc_a<25>" LOC = " " | IOSTANDARD = "LVCMOS33" ;
#
NET "fmc_d<0>" LOC = "K2" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<1>" LOC = "V16" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<2>" LOC = "V9" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<3>" LOC = "T9" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<4>" LOC = "T5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<5>" LOC = "R5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<6>" LOC = "T10" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<7>" LOC = "R10" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<8>" LOC = "P6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<9>" LOC = "N5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<10>" LOC = "V10" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<11>" LOC = "U10" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<12>" LOC = "L5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<13>" LOC = "K6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<14>" LOC = "H4" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<15>" LOC = "H3" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<16>" LOC = "K5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<17>" LOC = "L2" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<18>" LOC = "L1" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<19>" LOC = "L7" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<20>" LOC = "T11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<21>" LOC = "T14" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<22>" LOC = "V14" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<23>" LOC = "L6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<24>" LOC = "U13" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<25>" LOC = "V13" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<26>" LOC = "U11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<27>" LOC = "U8" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<28>" LOC = "V6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<29>" LOC = "T6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<30>" LOC = "U5" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "fmc_d<31>" LOC = "U7" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 8;
NET "ct_noise" LOC = "H7" | 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 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 11.5 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
#======================================================================
