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litex-boards/litex_boards/platforms/qmtech_xc7k325t.py

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#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2023 Kazumoto Kojima
# Copyright (c) 2023 Hans Baier <hansfbaier@gmail.com>
#
# SPDX-License-Identifier: BSD-2-Clause
from litex.build.generic_platform import Pins, Subsignal, IOStandard, Misc
from litex.build.xilinx import XilinxPlatform
from litex.build.openocd import OpenOCD
# IOs ----------------------------------------------------------------------------------------------
_io = [
# Clk / Rst
("clk50", 0, Pins("F22"), IOStandard("LVCMOS33")),
# Buttons
("user_btn_n", 0, Pins("AF9"), IOStandard("LVCMOS33")),
("user_btn_n", 1, Pins("AF10"), IOStandard("LVCMOS33")),
# The core board does not have a USB serial on it,
# so you will have to attach an USB to serial adapter
# on these pins
("gpio_serial", 0,
Subsignal("tx", Pins("J2:7")),
Subsignal("rx", Pins("J2:8")),
IOStandard("LVCMOS33")
),
# SPIFlash
# S25FL256L
("spiflash4x", 0, # clock needs to be accessed through STARTUPE2
Subsignal("cs_n", Pins("C23")),
Subsignal("clk", Pins("C8")),
Subsignal("dq", Pins("B24", "A25", "B22", "A22")),
IOStandard("LVCMOS33")
),
# DDR3 SDRAM
# MT41J128M16JT-125K
("ddram", 0,
Subsignal("a", Pins("AF5 AF2 AD6 AC6 AD4 AB6 AE2 Y5 AA4 AE6 AE3 AD5 AB4 Y6"),
IOStandard("SSTL15")),
Subsignal("ba", Pins("AD3 AE1 AE5"), IOStandard("SSTL15")),
Subsignal("ras_n", Pins("AC3"), IOStandard("SSTL15")),
Subsignal("cas_n", Pins("AC4"), IOStandard("SSTL15")),
Subsignal("we_n", Pins("AF4"), IOStandard("SSTL15")),
#Subsignal("cs_n", Pins("--"), IOStandard("SSTL15")),
Subsignal("dm", Pins("V1 V3"), IOStandard("SSTL15")),
Subsignal("dq", Pins(
"W1 V2 Y1 Y3 AC2 Y2 AB2 AA3",
"U1 V4 U6 W3 V6 U2 U7 U5"),
IOStandard("SSTL15")), # _T_DCI")),
Subsignal("dqs_p", Pins("AB1 W6"), IOStandard("DIFF_SSTL15")), # _T_DCI")),
Subsignal("dqs_n", Pins("AC1 W5"), IOStandard("DIFF_SSTL15")), # _T_DCI")),
Subsignal("clk_p", Pins("AA5"), IOStandard("DIFF_SSTL15")),
Subsignal("clk_n", Pins("AB5"), IOStandard("DIFF_SSTL15")),
Subsignal("cke", Pins("AD1"), IOStandard("SSTL15")),
Subsignal("odt", Pins("AF3"), IOStandard("SSTL15")),
Subsignal("reset_n", Pins("W4"), IOStandard("LVCMOS15")),
Misc("SLEW=FAST"),
),
]
# The connectors are named after the daughterboard, not the core board
# because on the different core boards the names vary, but on the
# daughterboard they stay the same, which we need to connect the
# daughterboard peripherals to the core board.
# On this board J2 is U5 and J3 is U4
_connectors = [
("J2", {
# odd row even row
7: "A8", 8: "A9",
9: "B9", 10: "C9",
11: "A10", 12: "B10",
13: "D10", 14: "E10",
15: "B11", 16: "B12",
17: "C11", 18: "C12",
19: "A12", 20: "A13",
21: "D13", 22: "D14",
23: "A14", 24: "B14",
25: "C13", 26: "C14",
27: "A15", 28: "B15",
29: "D16", 30: "D15",
31: "B16", 32: "C16",
33: "A17", 34: "B17",
35: "D18", 36: "E18",
37: "C18", 38: "C17",
39: "A19", 40: "A18",
41: "B19", 42: "C19",
43: "A20", 44: "B20",
45: "D20", 46: "D19",
47: "A24", 48: "A23",
49: "E22", 50: "E21",
51: "D24", 52: "D23",
53: "D25", 54: "E25",
55: "E26", 56: "F25",
57: "B26", 58: "B25",
59: "C26", 60: "D26",
}),
("J3", {
# odd row even row
7: "AD21", 8: "AE21",
9: "AE22", 10: "AF22",
11: "AE23", 12: "AF23",
13: "V21", 14: "W21",
15: "Y22", 16: "AA22",
17: "AF24", 18: "AF25",
19: "AB21", 20: "AC21",
21: "AB22", 22: "AC22",
23: "AD23", 24: "AD24",
25: "AC23", 26: "AC24",
27: "AD25", 28: "AE25",
29: "AA23", 30: "AB24",
31: "AA25", 32: "AB25",
33: "Y23", 34: "AA24",
35: "AD26", 36: "AE26",
37: "AB26", 38: "AC26",
39: "W23", 40: "W24",
41: "Y25", 42: "Y26",
43: "W25", 44: "W26",
45: "U26", 46: "V26",
47: "V23", 48: "V24",
49: "U24", 50: "U25",
51: "T22", 52: "T23",
53: "R22", 54: "R23",
55: "R25", 56: "P25",
57: "P23", 58: "N23",
59: "N26", 60: "M26",
})
]
# Platform -----------------------------------------------------------------------------------------
class Platform(XilinxPlatform):
default_clk_name = "clk50"
default_clk_period = 1e9/50e6
core_resources_daughterboard = [
("onboard_led_1", 0, Pins("J26"), IOStandard("LVCMOS33")),
("onboard_led_2", 0, Pins("H26"), IOStandard("LVCMOS33")),
]
core_resources_standalone = [
("user_led", 0, Pins("J26"), IOStandard("LVCMOS33")),
("user_led", 1, Pins("H26"), IOStandard("LVCMOS33")),
]
def __init__(self, toolchain="vivado", with_daughterboard=False, with_core_resources=True):
device = "xc7k325tffg676-1"
io = _io
connectors = _connectors
if with_daughterboard:
io += self.core_resources_daughterboard
from litex_boards.platforms.qmtech_daughterboard import QMTechDaughterboard
daughterboard = QMTechDaughterboard(IOStandard("LVCMOS33"))
io += daughterboard.io
connectors += daughterboard.connectors
elif with_core_resources:
io += self.core_resources_standalone
XilinxPlatform.__init__(self, device, io, connectors, toolchain=toolchain)
self.toolchain.bitstream_commands = \
["set_property BITSTREAM.CONFIG.SPI_BUSWIDTH 4 [current_design]",
"set_property BITSTREAM.GENERAL.COMPRESS TRUE [current_design]"]
self.toolchain.additional_commands = \
["write_cfgmem -force -format bin -interface spix4 -size 16 "
"-loadbit \"up 0x0 {build_name}.bit\" -file {build_name}.bin"]
self.add_platform_command("set_property INTERNAL_VREF 0.750 [get_iobanks 34]")
self.add_platform_command("set_property INTERNAL_VREF 0.90 [get_iobanks 33]")
def create_programmer(self):
bscan_spi = "bscan_spi_xc7k325t.bit"
return OpenOCD("openocd_xc7_ft2232.cfg", bscan_spi)
def do_finalize(self, fragment):
XilinxPlatform.do_finalize(self, fragment)
self.add_period_constraint(self.lookup_request("clk50", loose=True), 1e9/50e6)
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