OZYmandias - interface module
About the OZY Module
The OZY module is an FPGA based interface controller card that provides the input and output connections to the real world. The use of an Altera Cyclone II FPGA provides numerous control lines for interfacing the various boards connected to the Atlas backplane.
OZY also provides a high speed USB 2.0 interface to the controlling PC. The USB interface will use a Cypress FX2 chip which greatly simplifies the design, development time and effort. The FX2 supports full duplex USB communications at a measured 35MB/s, which should allow sufficient bandwidth for current and future requirements.
The FPGA also provides the necessary control logic and data formatting for the Janus board as well serial and parallel interfaces for user defined I/O.
The software interface to the Janus module is being written in Verilog by Phil, VK6APH and Bill, KD5TFD.
One highly desirable feature of the OZY board will be the ability to measure the various high frequency crystal oscillators used by the HPSDR by using the 1 pps clock from a GPS receiver. The GPS clock will be used to gate the various oscillators and report the count to the PC via the USB interface. Since the PC will have prior knowledge of exactly what these frequencies should be, then any errors can be corrected in software. The result will be a radio with extremely high frequency accuracy and stability -- a boon for microwave operators.
The project leader for OZY is Phil, N8VB.
OZYMANDIAS??? See http://en.wikipedia.org/wiki/Ozymandias
Link to Wiki
Our HPSDR Wiki will contain the latest news, links, files, etc. for Ozy. Here is the direct link to the HPSDR Wiki: http://hpsdr.org/wiki/index.php?title=OZY
