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#======================================================================
#
# novena_eim.ucf
# -------------------
# Constraint file for implementing the Cryptech Novena base
# for the Xilinx Spartan6 LX45 on the Novena.
#
#
# 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.
#
#======================================================================
#
# The dev-bridge board uses a different pin of the Novena high-speed
# expansion connector to sample the avalanche noise source.
# And Xilinx does not provide an ifdef mechanism for UCF files.
#
#-------------------------------------------------------------------------------
CONFIG VCCAUX = 3.3;
#-------------------------------------------------------------------------------
#--------------------------------------------------------------------------------
# GCLK Timing
#--------------------------------------------------------------------------------
NET "gclk_p_pin" TNM_NET = TNM_gclk;
TIMESPEC TS_gclk = PERIOD TNM_gclk 20 ns HIGH 50%;
#-------------------------------------------------------------------------------
# BCLK Timing
#-------------------------------------------------------------------------------
NET "eim_bclk" TNM_NET = TNM_bclk;
TIMESPEC TS_bclk = PERIOD TNM_bclk 30 ns HIGH 50%;
#-------------------------------------------------------------------------------
# FPGA Pinout
#-------------------------------------------------------------------------------
NET "led_pin" LOC = "A16" | IOSTANDARD = "LVCMOS33" | SLEW = "SLOW" | DRIVE = 12;
NET "apoptosis_pin" LOC = "K1" | IOSTANDARD = "LVCMOS33" | SLEW = "SLOW" | DRIVE = 12;
NET "reset_mcu_b_pin" LOC = "F1" | IOSTANDARD = "LVCMOS33" | PULLUP;
NET "gclk_p_pin" LOC = "H2" | IOSTANDARD = "LVDS_33" | DIFF_TERM = "TRUE";
NET "gclk_n_pin" LOC = "H1" | IOSTANDARD = "LVDS_33" | DIFF_TERM = "TRUE";
NET "eim_bclk" LOC = "C9" | IOSTANDARD = "LVCMOS33";
NET "eim_cs0_n" LOC = "B11" | IOSTANDARD = "LVCMOS33";
NET "eim_da<0>" LOC = "G9" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<1>" LOC = "A10" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<2>" LOC = "F9" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<3>" LOC = "B9" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<4>" LOC = "E13" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<5>" LOC = "F13" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<6>" LOC = "A9" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<7>" LOC = "A8" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<8>" LOC = "B8" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<9>" LOC = "D8" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<10>" LOC = "D11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<11>" LOC = "C8" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<12>" LOC = "C7" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<13>" LOC = "C11" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<14>" LOC = "C4" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_da<15>" LOC = "B6" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
NET "eim_a<16>" LOC = "A11" | IOSTANDARD = "LVCMOS33";
NET "eim_a<17>" LOC = "B12" | IOSTANDARD = "LVCMOS33";
NET "eim_a<18>" LOC = "D14" | IOSTANDARD = "LVCMOS33";
NET "eim_lba_n" LOC = "B14" | IOSTANDARD = "LVCMOS33";
NET "eim_wr_n" LOC = "C14" | IOSTANDARD = "LVCMOS33";
NET "eim_oe_n" LOC = "C10" | IOSTANDARD = "LVCMOS33";
NET "eim_wait_n" LOC = "A7" | IOSTANDARD = "LVCMOS33" | SLEW = "FAST" | DRIVE = 12;
# Pins to the header where the noise sources on the
# Cryptech dev-bridge board are connected.
NET "ct_noise" LOC = "H7" | IOSTANDARD = "LVCMOS33" ;
#-------------------------------------------------------------------------------
# EIM Input Timing
#-------------------------------------------------------------------------------
NET "eim_cs0_n" TNM = "TNM_EIM_IN";
NET "eim_da<*>" TNM = "TNM_EIM_IN";
NET "eim_lba_n" TNM = "TNM_EIM_IN";
NET "eim_wr_n" TNM = "TNM_EIM_IN";
NET "eim_oe_n" TNM = "TNM_EIM_IN";
TIMEGRP "TNM_EIM_IN" OFFSET = IN 9.75 ns VALID 16.0 ns BEFORE "eim_bclk" RISING;
#-------------------------------------------------------------------------------
# EIM Output Timing
#-------------------------------------------------------------------------------
NET "eim_da<*>" TNM = "TNM_EIM_OUT";
NET "eim_wait_n" TNM = "TNM_EIM_OUT";
TIMEGRP "TNM_EIM_OUT" OFFSET = OUT 13.0 ns AFTER "eim_bclk" FALLING;
#-------------------------------------------------------------------------------
# CDC Paths
#-------------------------------------------------------------------------------
INST "eim/eim/eim_cdc/cdc_eim_sys/src_ff" TNM = "TNM_from_bclk";
INST "eim/eim/eim_cdc/cdc_eim_sys/src_latch*" TNM = "TNM_from_bclk";
INST "eim/eim/eim_cdc/cdc_eim_sys/ff_sync*" TNM = "TNM_to_sys_clk";
INST "eim/eim/eim_cdc/cdc_eim_sys/dst_latch*" TNM = "TNM_to_sys_clk";
INST "eim/eim/eim_cdc/cdc_sys_eim/src_ff" TNM = "TNM_from_sys_clk";
INST "eim/eim/eim_cdc/cdc_sys_eim/src_latch*" TNM = "TNM_from_sys_clk";
INST "eim/eim/eim_cdc/cdc_sys_eim/ff_sync*" TNM = "TNM_to_bclk";
INST "eim/eim/eim_cdc/cdc_sys_eim/dst_latch*" TNM = "TNM_to_bclk";
TIMESPEC "TS_bclk_2_sys_clk" = FROM "TNM_from_bclk" TO "TNM_to_sys_clk" TIG;
TIMESPEC "TS_sys_clk_2_bclk" = FROM "TNM_from_sys_clk" TO "TNM_to_bclk" TIG;
#======================================================================
# EOF novena_eim.ucf
#======================================================================
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