rocketio

Tutorial Overview In the last tutorial we implemented the embedded Tri-mode Ethernet MAC and tested it by looping back Ethernet packets and monitoring them with Wireshark. In this tutorial, we will again implement the EMAC but this time we will link it to an Aurora core, to implement an Aurora to Ethernet Bridge. With the bridge, we can link two PCs as shown in the diagram below. To connect the EMAC and Aurora cores we have to use two FIFOs to cross clock domains. [Read More]

Overview In this tutorial we will create a peripheral containing the Aurora core to implement a high speed serial transceiver with a RocketIO MGT. It will be an improved version of the Aurora transceiver developed in the tutorial titled Create an Aurora Transceiver. The improvement is achieved by connecting the peripheral to the PLB rather than the OPB, which allows much faster data transfer by virtue of a wider bus and Direct Memory Access capability. [Read More]

Overview In this tutorial we will create a peripheral containing the Aurora core to implement a high speed serial transceiver with a RocketIO MGT. The peripheral can be used to connect two XUPV2P boards using the SATA connectors and transfer data between them at 1.5Gbps. To test the design using only one XUPV2P board, we will instantiate two Aurora peripherals, assign them to different RocketIO MGTs and place a SATA cable between them to create a loop-back connection. [Read More]

Overview In this tutorial we will use a RocketIO MGT for possibly its simplest application, a programmable oscillator. This can be achieved by feeding the MGT with a repetitive data pattern (e.g. “10101010101010101010”). By changing the data pattern we can adjust the output frequency and duty cycle. Figure: The Oscillator peripheral --> The diagram above illustrates the oscillator peripheral. In it we use 4 registers to store a 4 x 32 bit repeating pattern to be fed to the RocketIO primitive (GT_CUSTOM). [Read More]