mirror of https://github.com/zxdos/zxuno.git
68 lines
3.1 KiB
Plaintext
68 lines
3.1 KiB
Plaintext
# Spartan-3E starter kit constraints
|
|
|
|
# Analog-to-Digital Converter (ADC)
|
|
# some connections shared with SPI Flash, DAC, ADC, and AMP
|
|
NET "AD_CONV" LOC = "P11" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6;
|
|
|
|
# Programmable Gain Amplifier (AMP)
|
|
# some connections shared with SPI Flash, DAC, ADC, and AMP
|
|
NET "AMP_CS" LOC = "N7" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6;
|
|
|
|
# Pushbuttons (BTN)
|
|
##NET "BTN_EAST" LOC = "H13" | IOSTANDARD = LVTTL | PULLDOWN;
|
|
##NET "BTN_NORTH" LOC = "V4" | IOSTANDARD = LVTTL | PULLDOWN;
|
|
NET "BTN_SOUTH" LOC = "K17" | IOSTANDARD = LVTTL | PULLDOWN;
|
|
##NET "BTN_WEST" LOC = "D18" | IOSTANDARD = LVTTL | PULLDOWN;
|
|
|
|
# Clock inputs (CLK)
|
|
NET "CLK_50MHZ" LOC = "C9" | IOSTANDARD = LVCMOS33;
|
|
|
|
# Define clock period for 50 MHz oscillator (40%/60% duty-cycle)
|
|
NET "CLK_50MHZ" PERIOD = 20.0ns HIGH 40%;
|
|
|
|
# Digital-to-Analog Converter (DAC)
|
|
# some connections shared with SPI Flash, DAC, ADC, and AMP
|
|
NET "DAC_CLR" LOC = "P8" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8;
|
|
NET "DAC_CS" LOC = "N8" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8;
|
|
|
|
# FPGA Configuration Mode, INIT_B Pins (FPGA)
|
|
NET "FPGA_INIT_B" LOC = "T3" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 4; # platformflash_oe
|
|
|
|
# Discrete LEDs (LED)
|
|
NET "LED<0>" LOC = "F12" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<1>" LOC = "E12" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<2>" LOC = "E11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<3>" LOC = "F11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<4>" LOC = "C11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<5>" LOC = "D11" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<6>" LOC = "E9" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
NET "LED<7>" LOC = "F9" | IOSTANDARD = LVTTL | SLEW = SLOW | DRIVE = 4;
|
|
|
|
# Rotary Pushbutton Switch (ROT)
|
|
##NET "ROT_A" LOC = "K18" | IOSTANDARD = LVTTL | PULLUP;
|
|
##NET "ROT_B" LOC = "G18" | IOSTANDARD = LVTTL | PULLUP;
|
|
|
|
# Intel StrataFlash Parallel NOR Flash (SF)
|
|
NET "SF_CE0" LOC = "D16" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW; # strataflash_ce
|
|
NET "SF_OE" LOC = "C18" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW; # strataflash_oe
|
|
NET "SF_WE" LOC = "D17" | IOSTANDARD = LVCMOS33 | DRIVE = 4 | SLEW = SLOW; # strataflash_we
|
|
|
|
# STMicro SPI serial Flash (SPI)
|
|
# some connections shared with SPI Flash, DAC, ADC, and AMP
|
|
##NET "SPI_MISO" LOC = "N10" | IOSTANDARD = LVCMOS33;
|
|
NET "SPI_MOSI" LOC = "T4" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6;
|
|
NET "SPI_SCK" LOC = "U16" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6;
|
|
NET "SPI_SS_B" LOC = "U3" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 6; # spi_rom_cs
|
|
|
|
# Slide Switches (SW)
|
|
NET "SW<0>" LOC = "L13" | IOSTANDARD = LVTTL | PULLUP;
|
|
NET "SW<1>" LOC = "L14" | IOSTANDARD = LVTTL | PULLUP;
|
|
NET "SW<2>" LOC = "H18" | IOSTANDARD = LVTTL | PULLUP;
|
|
NET "SW<3>" LOC = "N17" | IOSTANDARD = LVTTL | PULLUP;
|
|
|
|
NET clk_phi PERIOD = 20.0ns;
|
|
|
|
#
|
|
# End of File
|
|
#
|