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Logic Analyzer With the ever increasing performance of microelectronics, the home user and small entrepreneur cannot afford to keep pace with the need for special test equipment. Getting all of today’s new microcontrollers to operate and execute code often requires a means of being able to view the relative timing of different signals in a system to get it going. With the requirement for high-speed clocking and configurable settings, the heart of this eight-channel serial interface analyzer is a CPLD from Lattice Semiconductor. These devices are extremely fast, which results in a system that can sample a high-speed bus. All signal acquisition is achieved by hardware and thus the microcontroller is free to handle the interfacing, setup, and control functions.
FPGA
on a USB Cable The FPGA on a Rope board and device driver provide a simple method to quickly configure and control a user-definable FPGA connected to a Windows 98 PC through a USB port. The design consists of the USBFPGA hardware (printed circuit board), and a Windows 98 compatible WDM device driver. An example application and FPGA template design are included to demonstrate the control and status functions of the USBFPGA device. These functions allow you to develop custom applications that communicate with your defined FPGA hardware via the USB port.
SatPoint
SatPoint is a portable satellite tracking device with an illuminated pointer that gives specific location information. By connecting the unit to a PC via RS-232, it can download up to 100 satellite passes and data that may span several days. The data is stored in nonvolatile memory so the unit can be turned on and off as needed without having to reload the tracking data. The PC sends the current date and time to SatPoint at the beginning of the data set. SatPoint sets its internal date and time and maintains that information automatically so that it is ready to track real-time at any time. Pushbuttons and a two-line by 20-character LCD interact with the operator and allow the selection of various modes of operation.
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