The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 1997
Filed:
Jun. 05, 1995
Lawrence P Andrews, Boca Raton, FL (US);
Gordon T Davis, Raleigh, NC (US);
Lee H House, Durham, NC (US);
Baiju D Mandalia, Boca Raton, FL (US);
Laurence V Marks, Raleigh, NC (US);
William R Robinson, Jr, West Palm Beach, FL (US);
John C Sinibaldi, Pompano Beach, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multi-mode time division multiplexing (TDM) interface circuit for interfacing between a serial data port and a data buffer is provided. The TDM interface circuit contains a transmitter and a receiver section. The circuit is programmable to operate in a variety of modes and is capable of supporting various multi-channel TDM interfaces as well as single channel analog interfaces. The circuit is programmable by writing a control word to a control register. In operation the circuit receives a frame synchronization signal, a gated bit clock signal, and a bit clock signal from the circuit with which it is interfacing on the serial data port. A base address input to a base address register provides up to 9 of the most significant bits of a data buffer address. A 12-bit counter is used to generate the remaining (least significant) bits of the data buffer address according to the control word in the control register.