Method of transferring data between subsystems of a computer sys

Details Method of transferring data between subsystems of a computer sys Method of transferring data between subsystems of a computer sys

1997-01-13

1998-08-11

Chin, Stephen

Pulse or digital communications

Multilevel

375259, 326 59, H04L 2534, H04L 2549

Patent

active

057938164

ABSTRACT:
Data transmission arrangement for transmitting data between integrated circuit chips in a computer comprises a driver circuit having inputs connected to two discrete data bits. The driver circuit converts the states of the two data bits to one of four possible output voltage levels on each of two data transmission conductors. A receiver circuit connected to the data transmission conductors converge the multi-level signals on the pair of transmission conductors into binary output signals for use in a receiving circuit chip. The driver circuit and receiver circuit are balanced circuits and symmetrically arranged such that essentially the same magnitude of current is drawn from the power bus independent of the value of the signal being transmitted, thereby eliminating Delta-I noise typically occurring on a power bus when binary data is transmitted.

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Riishoj et al. 4 GB/s Two-level to 2 GSYMBOL/s Four Level Converter GaAs IC for Semiconductor Optical Amplifier Modulators, GaAs IC Symposium, Oct. 1993.
Riishoj et al. A 4 GB/s Two-Level to GSYMBOL/s 4-Level Converter GaAs IC for Semiconductor Optical Amplifier QPSK Modulators, IEEE Journal of Solid-State Circuits, vol. 29, No. 10, Oct. 1993.

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