Alan R Clark

US Patent:

47363622, Apr 5, 1988

Filed:

Jul 26, 1985

Appl. No.:

6/759624

Inventors:

Alan T. Clark - Austin TX
Arthur F. Lange - Sunnyvale CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H04Q 1104

US Classification:

370 58

Abstract:

A multiplexer for use in a digital subscriber controller having a number of analog ports and digital ports which can be programmed via an external microprocessor to establish time-division multiplexed bidirectional data paths between three subscriber-selected ports designated as "sources" and three subscriber-selected ports designated as "destinations". Among the ports is a line-interface port having two 64 kilobit-per-second channels on which analog/digital data is received from and transmitted onto the network transmission line. Among the digital ports is a three-channel serial port and a two-channel microprocessor interface port. An analog port is also provided at which a variety of audio transducers may be connected. The data-routing multiplexer consists of three sections, each comprising a plurality of registers connected to a single internal bus on which time-division-multiplexed signals are generated and received by particular subscriber-selected registers, each register within a section serving as either a generator or a receiver for the internal bus for a particular digital channel. An extension of the internal bus is connected to the analog port.

US Patent:

46352554, Jan 6, 1987

Filed:

Jul 26, 1985

Appl. No.:

6/759622

Inventors:

Alan T. Clark - Austin TX
Hadi Ibrahim - Sunnyvale CA
Arthur F. Lange - Sunnyvale CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H04J 300

US Classification:

3701101

Abstract:

A digital subscriber controller having a number of analog ports and digital ports which can be programmed via an external microprocessor to establish time-division multiplexed bidirectional data paths between three subscriber-selected ports designated as "sources" and three subscriber-selected ports designated as "destinations". Among the ports is a line-interface port having two 64 kilobit-per-second voice/data channels and a 16 kilobit-per-second data control channel. Among the digital ports is a three-channel serial interface port and a two-channel microprocessor interface port. An analog port is also provided at which a variety of audio transducers may be connected. The controller includes a line interface unit, a data link controller which processes data channel information present at the line interface unit, a main audio processor, a microprocessor interface, and a multiplexer which establishes the data paths selected by the subscriber.

Address:

834 Crofton Cir, Reynoldsburg, OH 43068

VIN:

YV1RS592082694721

Make:

VOLVO

Model:

S60

Year:

2008