The VPX-D16A4 is CommAgility’s first board in the rugged VPX form factor, and is available as either conduction-cooled or air-cooled versions. For flexibility in interfacing, it supports SRIO, Ethernet, CPRI and Multi-Gigabit Transceiver (MGT) to the backplane plus links to RF or analogue I/O.
The board is based around a Texas Instruments (TI) TCI6638K2K KeyStone-based System-on-Chip (SoC) and a TI TMS320C6678 SoC, which between them contain sixteen C66x DSP cores and four ARM Cortex-A15 cores, as well as baseband and networking accelerators. The two SoCs are closely coupled with TI’s HyperLink bus as well as Gigabit Ethernet. Each device has its own 2 Gbytes DDR3 memory bank and a 20 Gbaud SRIO link to the VPX backplane.
For additional I/O or co-processing, the main DSP is connected via PCI Express and the AIF2 CPRI interface to a Xilinx Kintex-7 K325T FPGA, which also has Gigabit Ethernet and its own backplane MGT connections. The FPGA has multiple LVDS, GPIO and serial connections to the P2 connector to enable interfacing to an RTM with specialised I/O such as multi-channel RF or high speed ADC/DAC interfaces. It also has a PLL for flexible generation of RF clocks from a standard reference clock input.
The main DSP and FPGA both have a large bank of flash memory for application and data storage, with FLASH upgrades and boot selection managed in conjunction with the Board Management Controller for maximum security.
A full Linux BSP and example software support is provided to accelerate customer development, based on TI’s Multicore Software Development Kit (MCSDK) for Linux and the Xilinx Vivado FPGA development suite. MIMOon’s mi!SmallCellPHY-TI is available fully integrated and tested, providing a complete LTE physical layer.