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litex-boards/litex_boards/platforms/alinx_axau15.py

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#
# This file is part of LiteX-Boards.
#
# Copyright (c) 2023 John Simons <jammsimons@gmail.com>
# SPDX-License-Identifier: BSD-2-Clause
from litex.build.generic_platform import *
from litex.build.xilinx import XilinxUSPPlatform, VivadoProgrammer
# IOs ----------------------------------------------------------------------------------------------
_io = [
# Clk / Rst.
("clk200", 0,
Subsignal("p", Pins("T24"), IOStandard("LVDS")),
Subsignal("n", Pins("U24"), IOStandard("LVDS"))
),
("clk156", 0,
Subsignal("p", Pins("T7"), IOStandard("LVDS")),
Subsignal("n", Pins("T6"), IOStandard("LVDS"))
),
# Buttons.
("user_btn", 0, Pins("N26"), IOStandard("LVCMOS33")),
("user_btn", 1, Pins("AA23"), IOStandard("LVCMOS33")),
# Leds.
("user_led", 0, Pins("W21"), IOStandard("LVCMOS18")),
("user_led", 1, Pins("AC16"), IOStandard("LVCMOS18")),
# Serial.
("serial", 0,
Subsignal("tx", Pins("A13")),
Subsignal("rx", Pins("A12")),
IOStandard("LVCMOS33")
),
# SDCard.
("sdcard", 0,
Subsignal("data", Pins("Y22 Y23 W20 W19"), Misc("PULLUP True")),
Subsignal("cmd", Pins("AA24"), Misc("PULLUP True")),
Subsignal("clk", Pins("AA25")),
Subsignal("cd", Pins("Y25")),
Misc("SLEW=FAST"),
IOStandard("LVCMOS18"),
),
# DDR4 SDRAM MT40A512M16.
("ddram", 0,
Subsignal("a", Pins(
"G25 M26 L25 E26 M25 F22 H26 F24",
"G26 J23 J25 J24 F25 H24"),
IOStandard("SSTL12_DCI")),
Subsignal("ba", Pins("J26 G22"), IOStandard("SSTL12_DCI")),
Subsignal("bg", Pins("L22"), IOStandard("SSTL12_DCI")),
Subsignal("ras_n", Pins("H21"), IOStandard("SSTL12_DCI")),
Subsignal("cas_n", Pins("H22"), IOStandard("SSTL12_DCI")),
Subsignal("we_n", Pins("K26"), IOStandard("SSTL12_DCI")),
Subsignal("cs_n", Pins("H23"), IOStandard("SSTL12_DCI")),
Subsignal("act_n", Pins("K25"), IOStandard("SSTL12_DCI")),
#Subsignal("par", Pins("L24"), IOStandard("SSTL12_DCI")),
Subsignal("dm", Pins("E25 L18"),
IOStandard("POD12_DCI")),
Subsignal("dq", Pins(
"F23 D25 E23 B26 D24 D26 B25 C26",
"M20 J20 J19 M21 L20 J21 K20 K21"),
IOStandard("POD12_DCI"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_p", Pins("D23 M19"),
IOStandard("DIFF_POD12_DCI"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_n", Pins("C24 L19"),
IOStandard("DIFF_POD12_DCI"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("clk_p", Pins("K22"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("clk_n", Pins("K23"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("cke", Pins("L23"), IOStandard("SSTL12_DCI")),
Subsignal("odt", Pins("M24"), IOStandard("SSTL12_DCI")),
Subsignal("reset_n", Pins("G24"), IOStandard("LVCMOS12")),
Misc("SLEW=FAST"),
),
# SPIFlash.
("spiflash4x", 0,
Subsignal("cs_n", Pins("AA12")),
Subsignal("clk", Pins("Y11")),
Subsignal("dq", Pins("AD11 AC12 AC11 AE11")),
IOStandard("LVCMOS18")
),
# RGMII Ethernet.
("eth_clocks", 0,
Subsignal("tx", Pins("AE16")),
Subsignal("rx", Pins("AD21")),
IOStandard("LVCMOS18")
),
("eth", 0,
Subsignal("rst_n", Pins("AF23"), IOStandard("LVCMOS18")),
Subsignal("int_n", Pins("AK16"), IOStandard("LVCMOS18")),
Subsignal("mdio", Pins("AE18"), IOStandard("LVCMOS18")),
Subsignal("mdc", Pins("AF20"), IOStandard("LVCMOS18")),
Subsignal("rx_ctl", Pins("AE21"), IOStandard("LVCMOS18")),
Subsignal("rx_data", Pins("AC22 AC23 AD23 AE23"), IOStandard("LVCMOS18")),
Subsignal("tx_ctl", Pins("AD16"), IOStandard("LVCMOS18")),
Subsignal("tx_data", Pins("Y18 AA18 AB24 AC24"), IOStandard("LVCMOS18")),
),
# PCIe.
("pcie_x1", 0,
Subsignal("rst_n", Pins("T19"), IOStandard("LVCMOS18")),
Subsignal("clk_p", Pins("AB7")),
Subsignal("clk_n", Pins("AB6")),
Subsignal("rx_p", Pins("AB2")),
Subsignal("rx_n", Pins("AB1")),
Subsignal("tx_p", Pins("AC5")),
Subsignal("tx_n", Pins("AC4"))
),
("pcie_x2", 0,
Subsignal("rst_n", Pins("T19"), IOStandard("LVCMOS18")),
Subsignal("clk_p", Pins("AB7")),
Subsignal("clk_n", Pins("AB6")),
Subsignal("rx_p", Pins("AB2 AD2")),
Subsignal("rx_n", Pins("AB1 AD1")),
Subsignal("tx_p", Pins("AC5 AD7")),
Subsignal("tx_n", Pins("AC4 AD6"))
),
("pcie_x4", 0,
Subsignal("rst_n", Pins("T19"), IOStandard("LVCMOS18")),
Subsignal("clk_p", Pins("AB7")),
Subsignal("clk_n", Pins("AB6")),
Subsignal("rx_p", Pins("AB2 AD2 AE4 AF2")),
Subsignal("rx_n", Pins("AB1 AD1 AE3 AF1")),
Subsignal("tx_p", Pins("AC5 AD7 AE9 AF7")),
Subsignal("tx_n", Pins("AC4 AD6 AE8 AF6"))
),
]
# Connectors ---------------------------------------------------------------------------------------
_connectors = [
("HPC", {
"SCL" : "V26",
"SDA" : "U26",
"CLK0_N" : "U25",
"CLK0_P" : "T25",
"CLK1_N" : "AC21",
"CLK1_P" : "AB21",
"DP1_M2C_P" : "V2",
"DP1_M2C_N" : "V1",
"DP2_M2C_P" : "T2",
"DP2_M2C_N" : "T1",
"DP3_M2C_P" : "P2",
"DP3_M2C_N" : "P1",
"DP1_C2M_P" : "W5",
"DP1_C2M_N" : "W4",
"DP2_C2M_P" : "U5",
"DP2_C2M_N" : "U4",
"DP3_C2M_P" : "R5",
"DP3_C2M_N" : "R4",
"DP0_C2M_P" : "AA5",
"DP0_C2M_N" : "AA4",
"DP0_M2C_P" : "Y2",
"DP0_M2C_N" : "Y1",
"LA06_P" : "N23",
"LA06_N" : "P23",
"LA10_P" : "W25",
"LA10_N" : "W26",
"LA14_P" : "U19",
"LA14_N" : "V19",
"LA18_CC_P" : "AD20",
"LA18_CC_N" : "AE20",
"LA27_P" : "AA19",
"LA27_N" : "AB19",
"CLK1_M2C_P" : "P7",
"CLK1_M2C_N" : "P6",
"LA00_CC_P" : "V23",
"LA00_CC_N" : "W23",
"LA03_P" : "N21",
"LA03_N" : "N22",
"LA08_P" : "R20",
"LA08_N" : "R21",
"LA12_P" : "R22",
"LA12_N" : "R23",
"LA16_P" : "U21",
"LA16_N" : "U22",
"LA20_P" : "AE17",
"LA20_N" : "AF17",
"LA22_P" : "AB17",
"LA22_N" : "AC17",
"LA25_P" : "AA22",
"LA25_N" : "AB22",
"LA29_P" : "AE25",
"LA29_N" : "AE26",
"LA31_P" : "AD24",
"LA31_N" : "AD26",
"LA33_P" : "AB25",
"LA33_N" : "AB26",
"GBTCLK1_M2C_P" : "P7",
"GBTCLK1_M2C_N" : "P6",
"GBTCLK0_M2C_P" : "V7",
"GBTCLK0_M2C_N" : "V6",
"LA01_CC_P" : "V24",
"LA01_CC_N" : "W24",
"LA05_P" : "P25",
"LA05_N" : "P26",
"LA09_P" : "N19",
"LA09_N" : "P19",
"LA13_P" : "T20",
"LA13_N" : "U20",
"LA17_CC_P" : "AC19",
"LA17_CC_N" : "AD19",
"LA23_P" : "AA20",
"LA23_N" : "AB20",
"LA26_P" : "Y20",
"LA26_N" : "Y21",
"PRSNT_M2C_B" : "Y26",
"CLK0_M2C_P" : "V7",
"CLK0_M2C_N" : "V6",
"LA02_P" : "N24",
"LA02_N" : "P24",
"LA04_P" : "R25",
"LA04_N" : "R26",
"LA07_P" : "P20",
"LA07_N" : "P21",
"LA11_P" : "T22",
"LA11_N" : "T23",
"LA15_P" : "V21",
"LA15_N" : "V22",
"LA19_P" : "AE22",
"LA19_N" : "AF22",
"LA21_P" : "Y17",
"LA21_N" : "AA17",
"LA24_P" : "AC18",
"LA24_N" : "AD18",
"LA28_P" : "AF18",
"LA28_N" : "AF19",
"LA30_P" : "AF24",
"LA30_N" : "AF25",
"LA32_P" : "AC26",
"LA32_N" : "AD26",
}
),
("XADC", {
"GPIO0" : "AB25",
"GPIO1" : "AA25",
"GPIO2" : "AB28",
"GPIO3" : "AA27",
"VAUX0_N" : "J24",
"VAUX0_P" : "J23",
"VAUX8_N" : "L23",
"VAUX8_P" : "L22",
}
),
]
# Platform -----------------------------------------------------------------------------------------
class Platform(XilinxUSPPlatform):
default_clk_name = "clk200"
default_clk_period = 1e9/200e6
def __init__(self, toolchain="vivado"):
XilinxUSPPlatform.__init__(self, "xcau15p-ffvb676-2-i", _io, _connectors, toolchain=toolchain)
def create_programmer(self):
return VivadoProgrammer()
def do_finalize(self, fragment):
XilinxUSPPlatform.do_finalize(self, fragment)
self.add_period_constraint(self.lookup_request("clk200", loose=True), 1e9/200e6)
self.add_period_constraint(self.lookup_request("clk156", loose=True), 1e9/156e6)
self.add_platform_command("set_property INTERNAL_VREF 0.84 [get_iobanks 66]")
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