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timings-related fixes

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This commit is contained in:
Eugene Lozovoy
2024-09-10 11:19:14 +03:00
parent b575eed412
commit a335568fb0
7 changed files with 572 additions and 535 deletions
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11
TSConf.sdc
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@ -12,19 +12,20 @@ derive_clock_uncertainty
# Clock groups
set_clock_groups -asynchronous -group [get_clocks {SPI_SCK}] -group [get_clocks {pll|altpll_component|auto_generated|pll1|clk[*]}]
# SDRAM delays
# SDRAM
set_input_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -reference_pin [get_ports SDRAM_CLK] -max 6.4 [get_ports SDRAM_DQ[*]]
set_input_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -reference_pin [get_ports SDRAM_CLK] -min 3.2 [get_ports SDRAM_DQ[*]]
# SDRAM: max(tCMS, tAS, tDS) = 1.5ns ; max(tCMH, tAH, tDH) = 0.8ns
set_output_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -reference_pin [get_ports SDRAM_CLK] -max 1.5 [get_ports {SDRAM_D* SDRAM_A* SDRAM_BA* SDRAM_n* SDRAM_CKE}]
set_output_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -reference_pin [get_ports SDRAM_CLK] -min -0.8 [get_ports {SDRAM_D* SDRAM_A* SDRAM_BA* SDRAM_n* SDRAM_CKE}]
#SDRAM_CLK to internal memory clock
#set_multicycle_path -from [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -to [get_clocks {pll|altpll_component|auto_generated|pll1|clk[1]}] -setup 2
# SDRAM_CLK to internal memory clock
set_multicycle_path -from [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -to [get_clocks {pll|altpll_component|auto_generated|pll1|clk[1]}] -setup 2
# Some relaxed constrain to the VGA pins. The signals should arrive together, the delay is not really important.
set_output_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -max 0 [get_ports {VGA_*}]
set_output_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[0]}] -min -5 [get_ports {VGA_*}]
set_output_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[1]}] -max 0 [get_ports {VGA_*}]
set_output_delay -clock [get_clocks {pll|altpll_component|auto_generated|pll1|clk[1]}] -min -5 [get_ports {VGA_*}]
set_multicycle_path -to [get_ports {VGA_*}] -setup 5
set_multicycle_path -to [get_ports {VGA_*}] -hold 4