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microwatt/litedram/gen-src/nexys-video.yml

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YAML

# This file is Copyright (c) 2018-2019 Florent Kermarrec <florent@enjoy-digital.fr>
# License: BSD
{
# General ------------------------------------------------------------------
"cpu": "vexriscv", # Type of CPU used for init/calib (vexriscv, lm32)
"cpu_variant":"minimal",
"speedgrade": -1, # FPGA speedgrade
"memtype": "DDR3", # DRAM type
# PHY ----------------------------------------------------------------------
"cmd_delay": 0, # Command additional delay (in taps)
"cmd_latency": 0, # Command additional latency
"sdram_module": "MT41K256M16", # SDRAM modules of the board or SO-DIMM
"sdram_module_nb": 2, # Number of byte groups
"sdram_rank_nb": 1, # Number of ranks
"sdram_phy": "A7DDRPHY", # Type of FPGA PHY
# Electrical ---------------------------------------------------------------
"rtt_nom": "60ohm", # Nominal termination
"rtt_wr": "60ohm", # Write termination
"ron": "34ohm", # Output driver impedance
# Frequency ----------------------------------------------------------------
"input_clk_freq": 100e6, # 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",
},
},
# CSR Port -----------------------------------------------------------------
"csr_base" : 0xc0100000, # For cpu=None only
}