74 lines
2.4 KiB
Plaintext
74 lines
2.4 KiB
Plaintext
## blink.ccf
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#
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# Date: 2024-07-18
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#
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# Syntax:
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# NET "<pin-name>" Loc = "<pin-location>" | <opt.-constraints>;
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#
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# Backward compatible legacy syntax:
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# <pin-direction> "<pin-name>" Loc = "<pin-location>" | <opt.-constraints>;
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#
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# Additional constraints can be appended using the pipe symbol.
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# Files are read line by line. Text after the hash symbol is ignored.
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#
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# Available legacy pin directions:
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#
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# Pin_in
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# defines an input pin
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# Pin_out
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# defines an output pin
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# Pin_triout
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# defines a tristate output pin
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# Pin_inout
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# defines a bidirectional pin
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#
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# Available pin constraints:
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#
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# SCHMITT_TRIGGER={true,false}
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# enables or disables schmitt trigger (hysteresis) option
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# PULLUP={true,false}
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# enables or disables I/O pullup resistor of nominal 50kOhm
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# PULLDOWN={true,false}
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# enables or disables I/O pulldown resistor of nominal 50kOhm
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# KEEPER={true,false}
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# enables or disables I/O keeper option
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# SLEW={slow,fast}
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# sets slew rate to slow or fast
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# DRIVE={3,6,9,12}
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# sets output drive strength to 3mA..12mA
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# DELAY_OBF={0..15}
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# adds an additional delay of n * nominal 50ps to output signal
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# DELAY_IBF={0..15}
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# adds an additional delay of n * nominal 50ps to input signal
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# FF_IBF={true,false}
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# enables or disables placing of FF in input buffer, if possible
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# FF_OBF={true,false}
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# enables or disables placing of FF in output buffer, if possible
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# LVDS_BOOST={true,false}
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# enables increased LVDS output current of 6.4mA (default: 3.2mA)
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# LVDS_RTERM={true,false}
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# enables on-chip LVDS termination resistor of nominal 100Ohm, in input mode only
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#
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# Global IO constraints can be set with the default_GPIO statement. It can be
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# overwritten by individual settings for specific GPIOs, e.g.:
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# default_GPIO | DRIVE=3; # sets all output strengths to 3mA, unless overwritten
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#
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Net "clk" Loc = "IO_SB_A8" | SCHMITT_TRIGGER=true;
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Net "rst" Loc = "IO_SB_B7"; # SW3
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Net "led" Loc = "IO_SB_B6"; # D1
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Net "h_sync" Loc = "IO_WB_A1";
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Net "v_sync" Loc = "IO_WB_B1";
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Net "red[3]" Loc = "IO_WB_A2";
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Net "red[2]" Loc = "IO_WB_B2";
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Net "red[1]" Loc = "IO_WB_A3";
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Net "red[0]" Loc = "IO_WB_B3";
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Net "green[3]" Loc = "IO_WB_A4";
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Net "green[2]" Loc = "IO_WB_B4";
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Net "green[1]" Loc = "IO_WB_A5";
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Net "green[0]" Loc = "IO_WB_B5";
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Net "blue[3]" Loc = "IO_WB_A6";
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Net "blue[2]" Loc = "IO_WB_B6";
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Net "blue[1]" Loc = "IO_WB_A7";
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Net "blue[0]" Loc = "IO_WB_B7";
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