Hevday’s Logic Module, together with the TCP/IP Communications Card (Comms Card), makes up the hardware component of the Interactive Logic System. The Hevday Logic Module uses real logic circuit hardware configured in an FPGA, and is not a simulator, although if you need a fast hardware-assisted behavioral simulator, try Interactive Logic with a Logic Module. Interactive Logic is designed to save Customers time, and as such provides all the necessary circuitry for FPGA voltage regulation, decoupling and power distribution, clock generation and frequency selection, circuit configuration, writing the configuration to the flash ROM, power-on reset, time-base, and circuit data access. If you supply a Logic Module and Comms Card with 5 Volt power, and connect them to a PC via a network or crossover cable, you will have an operational Interactive Logic System.
Comms Cards come in two kinds. Both are full microcomputer systems with embedded TCP/IP stacks and special software for controlling the Logic Module. The Development Comms Card supports all features of Interactive Logic required for circuit development. The lower cost Monitor Comms Card supports restricted features designed for monitoring systems in operation. You need at least one Development Comms Card for circuit development. Once your circuit is developed, the Logic Module itself may be used with or without a Comms Card. Without the Comms card it can load your circuit from flash ROM and run it at a designated clock frequency at power-up. The Logic Module has 96 user I/O pins, provided on six 20-pin headers. Each header has 16 I/O plus 4 ground pins. Each I/O pin is usable as an input, output or bidirectional connection. I/O levels suit LVTTL and 3V3 CMOS. For 5 Volt tolerance, see the Xilinx Answers Database entry Are Spartan-IIE I/Os 5V-tolerant? and the quoted Xilinx 5 Volt tolerance documents. Suitable cables can be supplied to match the I/O headers on request. The 20-way 0.05 inch pitch flat cables are terminated on one end only, allowing you to choose the termination type for the end that connects to your equipment, and to adjust the length to exactly suit your application. Sources of Information This web-site has a variety of information to help you evaluate and use Hevday Interactive Logic and the Logic Module. The Precautions document is particularly applicable to the hardware. Other general descriptive documents are listed under About Interactive Logic and the software help documentation, also available here provides detailed specific information. |