Patent ID: 6320444
Filing Date: 2001-11-20
Classification: H03K,H03L

Abstract:
An initial phase control for a delay cell, comprising:a current source circuit coupled to a first node of the delay cell;a current provider; andan initial phase controller including at least one switch coupled to said current source circuit and to said current provider to set an initial phase of the delay cell output such that the current source circuit and current provider are selectively and synchronously in an on or off state such that when the current source circuit and current provider are in an on state, the current source circuit draws a current through the first node of the delay cell and the current provider provides current through a second node of the delay cell and such that the phase of the delay cell output of the is started in a predetermined initial phase,wherein the initial phase controller includes a reset switch and a transistor, the reset switch is coupled between a power supply and the transistor, the transistor having collector, base, and emitter nodes coupled to said power supply, the reset switch, and the second node of the delay cell, respectively.