diff options
Diffstat (limited to 'ucf')
| -rw-r--r-- | ucf/alpha_fmc.ucf | 49 |
1 files changed, 15 insertions, 34 deletions
diff --git a/ucf/alpha_fmc.ucf b/ucf/alpha_fmc.ucf index 5e71c64..efefa76 100644 --- a/ucf/alpha_fmc.ucf +++ b/ucf/alpha_fmc.ucf @@ -7,7 +7,7 @@ # # # Author: Pavel Shatov -# Copyright (c) 2016, NORDUnet A/S All rights reserved. +# Copyright (c) 2016, 2018 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 @@ -39,23 +39,23 @@ #-------------------------------------------------------------------------------- -# GCLK Timing (fixed at 50 MHz) +# GCLK Timing (fixed at 50 MHz) - NOT USED #-------------------------------------------------------------------------------- -NET "gclk_pin" TNM_NET = TNM_gclk; -TIMESPEC TS_gclk = PERIOD TNM_gclk 20 ns HIGH 50%; +#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%; +TIMESPEC TS_fmc_clk = PERIOD TNM_fmc_clk 11.111 ns HIGH 50%; #------------------------------------------------------------------------------- # FPGA Pinout #------------------------------------------------------------------------------- -#
+# NET "led_pins<0>" LOC = "U3"; NET "led_pins<1>" LOC = "T1"; NET "led_pins<2>" LOC = "W22"; @@ -145,8 +145,9 @@ NET "mkm_do" LOC = "Y1" | IOSTANDARD = "LVCMOS33" ; # MKM_FPGA_MISO # 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. +# The following timing values were derived from Figures 61-62 and Tables 96-97 +# (pages 180-182) of the STM32F429 datasheet ("DocID024030 Rev 10"). +# 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. @@ -154,10 +155,9 @@ NET "mkm_do" LOC = "Y1" | IOSTANDARD = "LVCMOS33" ; # MKM_FPGA_MISO # 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. +# more strict. # -# Oh, and stupid datasheet doesn't explicitly specify hold time for the data bus! +# Oh, and the datasheet doesn't explicitly specify hold time for the data bus. # NET "fmc_d<*>" TNM = "TNM_FMC_IN_DATA" ; @@ -167,37 +167,18 @@ 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_DATA" OFFSET = IN 3.0 ns VALID 8.5 ns BEFORE "fmc_clk" RISING ; +TIMEGRP "TNM_FMC_IN_ADDR" OFFSET = IN 5.5 ns VALID 5.5 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; - +TIMEGRP "TNM_FMC_OUT_DATA" OFFSET = OUT 6.0 ns AFTER "fmc_clk" RISING; -#------------------------------------------------------------------------------- -# 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 |