Hardware Specification

The Cosmos+ OpenSSD platform consists of the following components:

• HYU Tiger4 SSD controller
  • Implemented by XC7Z045-FFG900-3 Zynq-7000 FPGA
  • Dual 1GHz ARM Cortex-A9 core
  • Neon DSP Co-processor for each core
  • 350K LCs
• Memory
  • 1GByte DDR3 SDRAM
  • Dual QSPI Flash Memory
  • 1 SD Card Slot
• Host interface
  • Dual PCIe Gen2 x8 End-Points (Cabled PCIe Interface)
  • Support for a subset of NVMe command set
• Connectivity
  • 1 Gigabit Ethernet Interface
  • 1 USB 2.0 (configurable to Host or Device)
• Console Debug Interface
  • 1 USB-UART Port
  • 1 ARM JTAG
  • 1 PL JTAG
  • 1 Digilent USB-JTAG
• Indicators and Switches
  • LEDs and Tactile Switches
• NAND Flash Interface
  • Max 2TB (MLC) capacity (1TB/module)
  • Up to 8-channel, 8-way
  • Support for Toggle NAND

Software/Firmware/RTL

The Cosmos+ OpenSSD platform will include the following software/firmware/RTL packages. The latest version can be downloaded from https://github.com/Cosmos-OpenSSD/Cosmos-plus-OpenSSD.

• Basic firmware source code for interfacing with PCIe controller and Flash controller
• Source codes of three sample FTLs (TutorialFTL, GreedyFTL, and DummyFTL)
• Source code of the sample host-side device drivers (Linux and Windows)
• RTL source code of the sample Tiger4 controller hardware