Raed M Hafez

US Patent:

57520488, May 12, 1998

Filed:

Feb 12, 1996

Appl. No.:

8/600390

Inventors:

Shawn Richard Antol - Hanover Park IL
Raed Mouaffac Hafez - Lake in the Hills IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04M 1100
H04L 2710
G06F 132

US Classification:

39575005

Abstract:

The invention prevents an operating system from freezing operation of computer peripherals such as a PCMCIA modem card constructed using an AT&T HSM PID2 Chipset when a suspend mode is activated by the computer. The invention provides a simulation (device: 100, 200; method: 300, 600, 700) of an idle Universal Asynchronous Receiver Transmitter, UART, in a computer peripheral operably coupled to the computer wherein the simulation provides a logic one in a least significant bit position for the PCMCIA data bus, thereby indicating that no data remains to be sent on the PCMCIA data bus.