Patent ID: 7990196
Filing Date: 2011-08-02
Classification: H03K,H04L

Abstract:
1. A driver boost signaling circuit comprising: a signal generator circuit configured to generate a signal including a series of pulses on an associated signal load line; a determining circuit including a first portion configured to determine a high impedance condition of the associated signal load line, and a second portion configured to determine a first set of one or more pulses of the series of pulses applied to the associated signal load line a predetermined time following the high impedance condition; a receiving circuit configured to receive a control signal; a logic circuit configured to generate a first logical signal responsive to the control signal and to the determining circuit determining the first set of one or more pulses of the series of pulses applied to the associated signal load line following the high impedance condition, and to generate a second logical signal different than the first logical signal responsive to the control signal and to the determining circuit determining pulses of the series of pulses other than the first set of one or more pulses; and, a switchable impedance circuit operatively coupling the signal generator with the associated signal load line, the switchable impedance circuit being responsive to the first logical signal of the logic circuit to provide a first impedance level between the signal generator circuit and the associated signal load line, and being responsive to the second logical signal of the logic circuit to provide a second impedance level larger than the first impedance between the signal generator circuit and the associated signal load line.