microwatt/litedram/gen-src/genesys2.yml

# This file is Copyright (c) 2018-2019 Florent Kermarrec <florent@enjoy-digital.fr>
# License: BSD

{
    # General ------------------------------------------------------------------
    "cpu":        "None",  # CPU type (ex vexriscv, serv, None)
    "speedgrade": -2,          # FPGA speedgrade
    "memtype":    "DDR3",      # DRAM type

    # PHY ----------------------------------------------------------------------
    "cmd_latency":     1,             # Command additional latency
    "sdram_module":    "MT41J256M16", # SDRAM modules of the board or SO-DIMM
    "sdram_module_nb": 4,             # Number of byte groups
    "sdram_rank_nb":   1,             # Number of ranks
    "sdram_phy":       "K7DDRPHY",    # Type of FPGA PHY

    # Electrical ---------------------------------------------------------------
    "rtt_nom": "60ohm",  # Nominal termination
    "rtt_wr":  "60ohm",  # Write termination
    "ron":     "34ohm",  # Output driver impedance

    # Frequency ----------------------------------------------------------------
    "input_clk_freq":   200e6, # Input clock frequency
    "sys_clk_freq":     100e6, # System clock frequency (DDR_clk = 4 x sys_clk)
    "iodelay_clk_freq": 200e6, # IODELAYs reference clock frequency

    # Core ---------------------------------------------------------------------
    "cmd_buffer_depth": 16,    # Depth of the command buffer

    # User Ports ---------------------------------------------------------------
    "user_ports": {
        "native_0": {
            "type": "native",
        },
    },
}