Patent ID: 7256611
Filing Date: 2007-08-14
Classification: H03K

Abstract:
1. A circuit for assigning digital resources and a liquid crystal display (LCD) driver to pins of an integrated circuit, comprising: a plurality of pins of said integrated circuit; a microprocessor formed in said integrated circuit; a plurality of digital resources formed in said integrated circuit having a plurality of digital resource outputs, one or more thereof uniquely associated with each of said digital resources; an LCD driver formed in said integrated circuit and having a plurality of LCD driver outputs; and a cross-bar matrix having a plurality of cross-bar matrix signal inputs coupled respectively to said digital resource outputs and said LCD driver outputs, and a plurality of cross-bar matrix signal outputs coupled to said integrated circuit pins, said cross-bar matrix controlled by said microprocessor for coupling said ones of said cross-bar matrix signal inputs to different ones of said cross-bar matrix signal outputs, whereby said digital resource outputs and said LCD driver outputs can be coupled selectively to different pins under control of said microprocessor and with said cross-bar matrix configured to uniquely associate each of said LCD driver outputs with only one of said cross-bar matrix outputs and, when the functionality of said LCD driver is coupled to said pins, said digital resources are restricted from being coupled to any cross-bar matrix signal outputs coupled to said LCD driver outputs; and wherein said digital resource outputs and said LCD driver outputs occupy a sum total of said cross-bar matrix inputs to said cross-bar matrix that exceeds the number of said cross-bar matrix signal outputs thereof.