XC3100L

 Complete line of four related Field Programmable Gate Array product families
   XC3000A, XC3000L, XC3100A, XC3100L
 Ideal for a wide range of custom VLSI design tasks
   Replaces TTL, MSI, and other PLD logic
   Integrates complete sub-systems into a single package
    Avoids the NRE, time delay, and risk of conventional masked gate arrays
 High-performance CMOS static memory technology
    Guaranteed toggle rates of 70 to 370 MHz, logic delays from 7 to 1.5 ns
    System clock speeds over 85 MHz
    Low quiescent and active power consumption
 Flexible FPGA architecture
   Compatible arrays ranging from 1,000 to 7,500 gate complexity
   Extensive register, combinatorial, and I/O capabilities
   High fan-out signal distribution, low-skew clock nets
   Internal 3-state bus capabilities
   TTL or CMOS input thresholds
   On-chip crystal oscillator amplifier
 Unlimited reprogrammability
   Easy design iteration
   In-system logic changes
 Extensive packaging options
   Over 20 different packages
   Plastic and ceramic surface-mount and pin-grid- array packages
   Thin and Very Thin Quad Flat Pack (TQFP and VQFP) options
 Ready for volume production 
   Standard, off-the-shelf product availability
   100% factory pre-tested devices
   Excellent reliability record

 Complete Development System
    Schematic capture, automatic place and route
    Logic and timing simulation
    Interactive design editor for design optimization
    Timing calculator
    Interfaces to popular design environments like
Viewlogic, Cadence, Mentor Graphics, and others

  The perimeter of configurable Input/Output Blocks (IOBs) XC3100L provides a programmable interface between the internal logic array and the device package pins. The array of Con-figurable Logic Blocks (CLBs) performs user-specified logic functions. The interconnect resources are programmed to form networks, carrying logic signals among blocks, analo gous to printed circuit board traces connecting MSI/SSI packages.

  The XC3100L block logic functions are implemented by programmed look-up tables. Functional options are implemented by pro-gram-controlled multiplexers. Interconnecting networks between blocks are implemented with metal segments  joined by program-controlled pass transistors.

  These FPGA XC3100L functions are established by a configuration program which is loaded into an internal, distributed array of configuration memory cells. The configuration program is loaded into the device at power-up and may be reloaded on command. The FPGA includes logic and control signals to implement automatic or passive configuration. Program data may be either bit serial or byte parallel. The develop-ment system generates the configuration program bit stream used to configure the device. The memory loading process is independent of the user logic functions.