litex-boards/litex_boards/platforms/scarabhardware_minispartan6.py

168 lines
6.2 KiB
Python

#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2015 Matt O'Gorman <mog@rldn.net>
# SPDX-License-Identifier: BSD-2-Clause
from litex.build.generic_platform import *
from litex.build.xilinx import XilinxSpartan6Platform
from litex.build.xilinx.programmer import XC3SProg
# IOs ----------------------------------------------------------------------------------------------
_io = [
# Clk / Rst
("clk32", 0, Pins("J4"), IOStandard("LVCMOS33")),
("clk50", 0, Pins("K3"), IOStandard("LVCMOS33")),
# Leds
("user_led", 0, Pins("P11"), IOStandard("LVCMOS33")),
("user_led", 1, Pins("N9"), IOStandard("LVCMOS33")),
("user_led", 2, Pins("M9"), IOStandard("LVCMOS33")),
("user_led", 3, Pins("P9"), IOStandard("LVCMOS33")),
("user_led", 4, Pins("T8"), IOStandard("LVCMOS33")),
("user_led", 5, Pins("N8"), IOStandard("LVCMOS33")),
("user_led", 6, Pins("P8"), IOStandard("LVCMOS33")),
("user_led", 7, Pins("P7"), IOStandard("LVCMOS33")),
# Switches
("user_sw", 0, Pins("L1"), IOStandard("LVCMOS33"), Misc("PULLUP")),
("user_sw", 1, Pins("L3"), IOStandard("LVCMOS33"), Misc("PULLUP")),
("user_sw", 2, Pins("L4"), IOStandard("LVCMOS33"), Misc("PULLUP")),
("user_sw", 3, Pins("L5"), IOStandard("LVCMOS33"), Misc("PULLUP")),
# SPIFlash
("spiflash", 0,
Subsignal("cs_n", Pins("T3"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("R11"), IOStandard("LVCMOS33")),
Subsignal("mosi", Pins("T10"), IOStandard("LVCMOS33")),
Subsignal("miso", Pins("P10"), IOStandard("LVCMOS33"))
),
# Serial
("serial", 0,
Subsignal("tx", Pins("N6"), IOStandard("LVCMOS33")), # FTDI D1
Subsignal("rx", Pins("M7"), IOStandard("LVCMOS33")) # FTDI D0
),
# USB FIFO
("usb_fifo", 0,
Subsignal("data", Pins("M7 N6 M6 P5 N5 P4 P2 P1")),
Subsignal("rxf_n", Pins("N3")),
Subsignal("txe_n", Pins("N1")),
Subsignal("rd_n", Pins("M1")),
Subsignal("wr_n", Pins("M2")),
Subsignal("siwua", Pins("M3")),
Misc("SLEW=FAST"),
Drive(8),
IOStandard("LVCMOS33"),
),
# ADC
("adc", 0,
Subsignal("cs_n", Pins("F6"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("G6"), IOStandard("LVCMOS33")),
Subsignal("mosi", Pins("H4"), IOStandard("LVCMOS33")),
Subsignal("miso", Pins("H5"), IOStandard("LVCMOS33"))
),
# Audio
("audio", 0,
Subsignal("a0", Pins("B8"), IOStandard("LVCMOS33")),
Subsignal("a1", Pins("A8"), IOStandard("LVCMOS33"))
),
# SDR SDRAM
("sdram_clock", 0, Pins("G16"), IOStandard("LVCMOS33"), Misc("SLEW=FAST")),
("sdram", 0,
Subsignal("a", Pins(
"T15 R16 P15 P16 N16 M15 M16 L16",
"K15 K16 R15 J16 H15")),
Subsignal("dq", Pins(
"T13 T12 R12 T9 R9 T7 R7 T6",
"F16 E15 E16 D16 B16 B15 C16 C15")),
Subsignal("we_n", Pins("R5")),
Subsignal("ras_n", Pins("R2")),
Subsignal("cas_n", Pins("T4")),
Subsignal("cs_n", Pins("R1")),
Subsignal("cke", Pins("H16")),
Subsignal("ba", Pins("R14 T14")),
Subsignal("dm", Pins("T5 F15")),
Misc("SLEW=FAST"),
IOStandard("LVCMOS33"),
),
# SDCard
("spisdcard", 0,
Subsignal("clk", Pins("L12")),
Subsignal("mosi", Pins("K11"), Misc("PULLUP")),
Subsignal("cs_n", Pins("K12"), Misc("PULLUP")),
Subsignal("miso", Pins("M10"), Misc("PULLUP")),
Misc("SLEW=FAST"),
IOStandard("LVCMOS33"),
),
("sdcard", 0,
Subsignal("data", Pins("M10 L10 J11 K12"), Misc("PULLUP")),
Subsignal("cmd", Pins("K11"), Misc("PULLUP")),
Subsignal("clk", Pins("L12")),
Misc("SLEW=FAST"),
IOStandard("LVCMOS33"),
),
# HDMI In
("hdmi_in", 0,
Subsignal("clk_p", Pins("C9"), IOStandard("TMDS_33")),
Subsignal("clk_n", Pins("A9"), IOStandard("TMDS_33")),
Subsignal("data0_p", Pins("C7"), IOStandard("TMDS_33")),
Subsignal("data0_n", Pins("A7"), IOStandard("TMDS_33")),
Subsignal("data1_p", Pins("B6"), IOStandard("TMDS_33")),
Subsignal("data1_n", Pins("A6"), IOStandard("TMDS_33")),
Subsignal("data2_p", Pins("B5"), IOStandard("TMDS_33")),
Subsignal("data2_n", Pins("A5"), IOStandard("TMDS_33")),
Subsignal("scl", Pins("C1"), IOStandard("LVCMOS33")),
Subsignal("sda", Pins("B1"), IOStandard("LVCMOS33"))
),
# HDMI Out
("hdmi_out", 0,
Subsignal("clk_p", Pins("B14"), IOStandard("TMDS_33")),
Subsignal("clk_n", Pins("A14"), IOStandard("TMDS_33")),
Subsignal("data0_p", Pins("C13"), IOStandard("TMDS_33")),
Subsignal("data0_n", Pins("A13"), IOStandard("TMDS_33")),
Subsignal("data1_p", Pins("B12"), IOStandard("TMDS_33")),
Subsignal("data1_n", Pins("A12"), IOStandard("TMDS_33")),
Subsignal("data2_p", Pins("C11"), IOStandard("TMDS_33")),
Subsignal("data2_n", Pins("A11"), IOStandard("TMDS_33")),
)
]
# Connectors ---------------------------------------------------------------------------------------
_connectors = [
("A", "E7 C8 D8 E8 D9 A10 B10 C10 E10 F9 F10 D11"),
("B", "E11 D14 D12 E12 E13 F13 F12 F14 G12 H14 J14"),
("C", "J13 J12 K14 L14 L13 M14 M13 N14 M12 N12 P12 M11"),
("D", "D6 C6 E6 C5"),
("E", "D5 A4 G5 A3 B3 A2 B2 C3 C2 D3 D1 E3"),
("F", "E2 E1 E4 F4 F5 G3 F3 G1 H3 H1 H2 J1")
]
# Platform -----------------------------------------------------------------------------------------
class Platform(XilinxSpartan6Platform):
default_clk_name = "clk32"
default_clk_period = 1e9/32e6
def __init__(self, device="xc6slx25", toolchain="ise"):
assert device in ["xc6slx9", "xc6slx25"]
XilinxSpartan6Platform.__init__(self, device+"-3-ftg256", _io, _connectors, toolchain=toolchain)
def create_programmer(self):
return XC3SProg(cable="ftdi")
def do_finalize(self, fragment):
XilinxSpartan6Platform.do_finalize(self, fragment)
self.add_period_constraint(self.lookup_request("clk32", loose=True), 1e9/32e6)
self.add_period_constraint(self.lookup_request("clk50", loose=True), 1e9/50e6)