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A 9.02-mm×9.02-mm chip built in 1-μm CMOS with two levels of metal and an addition mask level for fabricating capacitors is described. It contains both analog and digital circuits and has provisions for self-test. The functions include the transmitter, receiver, protocol handler, and microprocessor, as well as interfaces for RAM/ROM storage, IBM PC bus, IBM PS/2 bus, IBM 3174 bus,...
An adaptor chip is described which is the result of a cost-reduction and function-enhancement project that yielded a single CMOS VLSI module capable of performing all major LAN (local area network) adapter functions and supporting a 16-Mb/s data rate. The chip when combined with external PROM and RAM modules, bus drivers, and discrete line interface components, forms a complete token-ring adapter...
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