To demonstrate the effectiveness of the SYZYGY standard for rapid prototyping, we gave our summer intern a task to build an open source signal generator design using the new XEM7320 and the SYZYGY DAC peripheral.

In under a month, our intern was able to implement a signal generator with full AM and FM support. The carrier signal is generated internally on the FPGA, with a configurable frequency set through FrontPanel. Audio used to modulate the carrier can be sourced through FrontPanel transfers over USB or from a SYZYGY PMOD4 adapter with an attached PMOD I2S2 audio ADC.

Read more about this project at the Opal Kelly Blog.

The source code for the demo can be found on the SYZYGY Github.