Title :
Shumbler: a 155 Mb/s BiCMOS synchronous multiplexer chip for a broad-band customer premises network
Author :
Gonzalez, José Luís Merino ; Sáenz, Fernando Ortiz ; Miranda, Gabriel Valencia
Author_Institution :
Alcatel Stand. Electr., S.A., Madrid, Spain
fDate :
9/1/1991 12:00:00 AM
Abstract :
The shumbler (shuffler/scrambler) is a circuit designed and fabricated to form part of a broadband customer premises network. The circuit is implemented in 1.2-μm BiCMOS double-metal technology. The circuit is bidirectional, and can perform the functions of scrambling and shuffling or descrambling and unshuffling by means of control signals to three integrated multiplexers. The shumbler also includes a programmable multiplexer that allows the selection of one out of the 16 output channels of the shuffler through a serial output for local system test purposes. The shumbler circuit interfaces emitter-coupled-logic (ECL) and transistor-transistor-logic (TTL) logic levels using a single power supply of -5 V, dissipating 1.5 W, and encapsulated in a 68-pin LCC package with a flat heat spreader which ensures a thermal resistivity of about 10°C/W
Keywords :
BIMOS integrated circuits; broadband networks; digital communication systems; digital integrated circuits; frequency division multiplexing; multiplexing equipment; optical communication equipment; optical links; time division multiplexing; -5 V; 1.2 micron; 1.5 W; 155 Mbit/s; 68-pin LCC package; BiCMOS; TDM; WDM; broadband customer premises network; descrambling; double-metal technology; flat heat spreader; integrated multiplexers; programmable multiplexer; scrambling; shuffling; shumbler; single power supply; synchronous multiplexer chip; unshuffling; BiCMOS integrated circuits; Circuit testing; Conductivity; Integrated circuit technology; Logic circuits; Multiplexing; Packaging; Power supplies; System testing; Thermal resistance;
Journal_Title :
Solid-State Circuits, IEEE Journal of
