18 lines
911 B
Tcl
18 lines
911 B
Tcl
derive_pll_clocks
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create_generated_clock -source [get_pins -compatibility_mode {*|pll|pll_inst|altera_pll_i|general[1].gpll~PLL_OUTPUT_COUNTER|divclk}] \
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-name SDRAM_CLK [get_ports {SDRAM_CLK}]
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derive_clock_uncertainty
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# Set acceptable delays for SDRAM chip (See correspondent chip datasheet)
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set_input_delay -max -clock SDRAM_CLK 6.4ns [get_ports SDRAM_DQ[*]]
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set_input_delay -min -clock SDRAM_CLK 3.7ns [get_ports SDRAM_DQ[*]]
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set_multicycle_path -from [get_clocks {SDRAM_CLK}] \
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-to [get_clocks {*|pll|pll_inst|altera_pll_i|general[0].gpll~PLL_OUTPUT_COUNTER|divclk}] \
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-setup 2
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set_output_delay -max -clock SDRAM_CLK 1.6ns [get_ports {SDRAM_D* SDRAM_A* SDRAM_BA* SDRAM_n* SDRAM_CKE}]
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set_output_delay -min -clock SDRAM_CLK -0.9ns [get_ports {SDRAM_D* SDRAM_A* SDRAM_BA* SDRAM_n* SDRAM_CKE}]
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