# This file is Copyright (c) 2017 Sergiusz Bazanski <q3k@q3k.org> # This file is Copyright (c) 2018-2019 Florent Kermarrec <florent@enjoy-digital.fr> # License: BSD from litex.build.generic_platform import * from litex.build.lattice import LatticePlatform from litex.build.lattice.programmer import OpenOCDJTAGProgrammer # IOs ---------------------------------------------------------------------------------------------- _io = [ ("clk100", 0, Pins("P3"), IOStandard("LVDS")), ("rst_n", 0, Pins("T1"), IOStandard("LVCMOS33")), ("user_led", 0, Pins("E16"), IOStandard("LVCMOS25")), ("user_led", 1, Pins("D17"), IOStandard("LVCMOS25")), ("user_led", 2, Pins("D18"), IOStandard("LVCMOS25")), ("user_led", 3, Pins("E18"), IOStandard("LVCMOS25")), ("user_led", 4, Pins("F17"), IOStandard("LVCMOS25")), ("user_led", 5, Pins("F18"), IOStandard("LVCMOS25")), ("user_led", 6, Pins("E17"), IOStandard("LVCMOS25")), ("user_led", 7, Pins("F16"), IOStandard("LVCMOS25")), ("user_dip_btn", 0, Pins("H2"), IOStandard("LVCMOS15")), ("user_dip_btn", 1, Pins("K3"), IOStandard("LVCMOS15")), ("user_dip_btn", 2, Pins("G3"), IOStandard("LVCMOS15")), ("user_dip_btn", 3, Pins("F2"), IOStandard("LVCMOS15")), ("user_dip_btn", 4, Pins("J18"), IOStandard("LVCMOS25")), ("user_dip_btn", 5, Pins("K18"), IOStandard("LVCMOS25")), ("user_dip_btn", 6, Pins("K19"), IOStandard("LVCMOS25")), ("user_dip_btn", 7, Pins("K20"), IOStandard("LVCMOS25")), ("serial", 0, Subsignal("rx", Pins("C11"), IOStandard("LVCMOS33")), Subsignal("tx", Pins("A11"), IOStandard("LVCMOS33")), ), ("spiflash", 0, # clock needs to be accessed through USRMCLK Subsignal("cs_n", Pins("R2")), Subsignal("mosi", Pins("W2")), Subsignal("miso", Pins("V2")), Subsignal("wp", Pins("Y2")), Subsignal("hold", Pins("W1")), IOStandard("LVCMOS33"), ), ("spiflash4x", 0, # clock needs to be accessed through USRMCLK Subsignal("cs_n", Pins("R2")), Subsignal("dq", Pins("W2 V2 Y2 W1")), IOStandard("LVCMOS33") ), ("ddram", 0, Subsignal("a", Pins( "P2 C4 E5 F5 B3 F4 B5 E4", "C5 E3 D5 B4 C3"), IOStandard("SSTL135_I")), Subsignal("ba", Pins("P5 N3 M3"), IOStandard("SSTL135_I")), Subsignal("ras_n", Pins("P1"), IOStandard("SSTL135_I")), Subsignal("cas_n", Pins("L1"), IOStandard("SSTL135_I")), Subsignal("we_n", Pins("M1"), IOStandard("SSTL135_I")), Subsignal("cs_n", Pins("K1"), IOStandard("SSTL135_I")), Subsignal("dm", Pins("J4 H5"), IOStandard("SSTL135_I")), Subsignal("dq", Pins( "L5 F1 K4 G1 L4 H1 G2 J3", "D1 C1 E2 C2 F3 A2 E1 B1"), IOStandard("SSTL135_I"), Misc("TERMINATION=75")), Subsignal("dqs_p", Pins("K2 H4"), IOStandard("SSTL135D_I"), Misc("TERMINATION=OFF"), Misc("DIFFRESISTOR=100")), Subsignal("clk_p", Pins("M4"), IOStandard("SSTL135D_I")), Subsignal("cke", Pins("N2"), IOStandard("SSTL135_I")), Subsignal("odt", Pins("L2"), IOStandard("SSTL135_I")), Subsignal("reset_n", Pins("N4"), IOStandard("SSTL135_I")), Misc("SLEWRATE=FAST"), ), ("eth_clocks", 0, Subsignal("tx", Pins("P19")), Subsignal("rx", Pins("L20")), IOStandard("LVCMOS25") ), ("eth", 0, Subsignal("rst_n", Pins("U17")), Subsignal("mdio", Pins("U18")), Subsignal("mdc", Pins("T18")), Subsignal("rx_ctl", Pins("U19")), Subsignal("rx_data", Pins("T20 U20 T19 R18")), Subsignal("tx_ctl", Pins("R20")), Subsignal("tx_data", Pins("N19 N20 P18 P20")), IOStandard("LVCMOS25") ), ("eth_clocks", 1, Subsignal("tx", Pins("C20")), Subsignal("rx", Pins("J19")), IOStandard("LVCMOS25") ), ("eth", 1, Subsignal("rst_n", Pins("F20")), Subsignal("mdio", Pins("H20")), Subsignal("mdc", Pins("G19")), Subsignal("rx_ctl", Pins("F19")), Subsignal("rx_data", Pins("G18 G16 H18 H17")), Subsignal("tx_ctl", Pins("E19")), Subsignal("tx_data", Pins("J17 J16 D19 D20")), IOStandard("LVCMOS25") ), ("ext_clk", 0, Subsignal("p", Pins("A4")), Subsignal("n", Pins("A5")), IOStandard("LVDS") ), ("pcie_x1", 0, Subsignal("clk_p", Pins("Y11")), Subsignal("clk_n", Pins("Y12")), Subsignal("rx_p", Pins("Y5")), Subsignal("rx_n", Pins("Y6")), Subsignal("tx_p", Pins("W4")), Subsignal("tx_n", Pins("W5")), Subsignal("perst", Pins("A6"), IOStandard("LVCMOS33")), ), ("refclk_en", 0, Pins("C12"), IOStandard("LVCMOS33")), ("refclk_rst_n", 0, Pins("R1"), IOStandard("LVCMOS33")), ("refclk", 0, Subsignal("p", Pins("Y11")), Subsignal("n", Pins("Y12")), ), ("refclk", 1, Subsignal("p", Pins("Y19")), Subsignal("n", Pins("W20")), ), ("sma_tx", 0, Subsignal("p", Pins("W8")), Subsignal("n", Pins("W9")), ), ("sma_rx", 0, Subsignal("p", Pins("Y7")), Subsignal("n", Pins("Y8")), ), ] _ecp5_soc_hat_io = [ ("sdram_clock", 0, Pins("E14"), IOStandard("LVCMOS33")), ("sdram", 0, Subsignal("a", Pins( "C6 E15 A16 B16 D15 C15 B15 E12", "D12 B10 C7 A9 C10")), Subsignal("dq", Pins( "B19 B12 B9 E6 D6 E7 D7 B11", "C14 A14 E13 D13 C13 B13 A13 A12")), Subsignal("we_n", Pins("E9")), Subsignal("ras_n", Pins("B8")), Subsignal("cas_n", Pins("D9")), Subsignal("cs_n", Pins("C8")), Subsignal("cke", Pins("D11")), Subsignal("ba", Pins("D8 E8")), Subsignal("dm", Pins("B6 D14")), Misc("SLEWRATE=FAST"), IOStandard("LVCMOS33"), ), ] # Connectors --------------------------------------------------------------------------------------- _connectors = [ ("X3", "None", # (no pin 0) "None", # 1 GND "None", # 2 N/C "None", # 3 +2V5 "B19", # 4 EXPCON_IO29 "B12", # 5 EXPCON_IO30 "B9", # 6 EXPCON_IO31 "E6", # 7 EXPCON_IO32 "D6", # 8 EXPCON_IO33 "E7", # 9 EXPCON_IO34 "D7", # 10 EXPCON_IO35 "B11", # 11 EXPCON_IO36 "B6", # 12 EXPCON_IO37 "E9", # 13 EXPCON_IO38 "D9", # 14 EXPCON_IO39 "B8", # 15 EXPCON_IO40 "C8", # 16 EXPCON_IO41 "D8", # 17 EXPCON_IO42 "E8", # 18 EXPCON_IO43 "C7", # 19 EXPCON_IO44 "C6", # 20 EXPCON_IO45 "None", # 21 +5V "None", # 22 GND "None", # 23 +2V5 "None", # 24 GND "None", # 25 +3V3 "None", # 26 GND "None", # 27 +3V3 "None", # 28 GND "None", # 29 EXPCON_OSC "None", # 30 GND "None", # 31 EXPCON_CLKIN "None", # 32 GND "None", # 33 EXPCON_CLKOUT "None", # 34 GND "None", # 35 +3V3 "None", # 36 GND "None", # 37 +3V3 "None", # 38 GND "None", # 39 +3V3 "None", # 40 GND ), ] # Platform ----------------------------------------------------------------------------------------- class Platform(LatticePlatform): default_clk_name = "clk100" default_clk_period = 1e9/100e6 def __init__(self, device="LFE5UM5G-45F-8BG381C", **kwargs): LatticePlatform.__init__(self, device, _io, _connectors, **kwargs) def create_programmer(self): return OpenOCDJTAGProgrammer("openocd_versa_ecp5.cfg") def do_finalize(self, fragment): self.add_period_constraint(self.lookup_request("clk100", loose=True), 1e9/100e6) self.add_period_constraint(self.lookup_request("eth_clocks:rx", 0, loose=True), 1e9/125e6) self.add_period_constraint(self.lookup_request("eth_clocks:rx", 1, loose=True), 1e9/125e6)