OpenHBMC is an open-source AXI4-based high performance HyperBus memory controller for Xilinx 7-series FPGAs. IP-core is packed for easy Vivado 2020.2 block design integration.

• Supports HyperRAM 1.0 and HyperRAM 2.0
• Supports 3.3V & 1.8V power modes
• Supports AXI4 data width of 16/32/64-bit
• Supports AXI4 address width up to 64-bit
• Supports all AXI4 burst types and sizes:
  • AXI4 INCR burst sizes up to 256 data beats (long transfers are automatically splitted into parts to meet maximum CS# low limitation)
  • AXI4 FIXED bursts are treated as INCR burst type
  • AXI4 WRAP bursts of 2, 4, 8, 16 data beats
• Supports HyperBUS frequency up to 200MHz
• No need to make any kind of calibration with new DRU (data recovery module)
• Resource utilization: 781-LUT, 975-FF, 1-RAMB36E1 (RAMB36E1 = 2 x RAMB18E1)

1. Download and copy the OpenHBMC folder with all entire files to your local IP-repo directory.
2. Open Vivado and click Tools - Settings - IP - Repository, click "+" to add a path to your IP-repo directory, click "Refresh All".
3. Now OpenHBMC will appear in IP-catalog and may be avaliable both for standalone or block design integration.

• Successfully passes memory test at 200MHz (i.e. < 400MB/s) on a real hardware (Spartan-7 + W956D8MBYA5I)
• Running heavy load tests, using several AXI traffic generators.

• Achieve 200MHz HyperBus clock frequency. DONE.
• Add advanced RWDS strobe delay calibration procedure. DONE. No more calibration needed.
• Helloworld example project. DONE.
• Add command queuing to maximize HyperRAM bus utilization.
• Replace Xilinx FIFOs IP cores with custom FIFOs.
• Add AXI4-Lite slave port for configuration registers access.
• Add multi-bank (commom data bus) modes to increase memory bandwidth. Dual or Quad rank modes?
• Add HyperFlash support.
• Formal verification.

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