Design of portable infrared business card exchange system on chip

To be different from the universal asynchronous design in multichip, a new-style design of the synchronous system on monolithic chip is presented to apply to exchange and management of business cards in this paper. Every part is accomplished and some improvement is made in the circuits to decrease power consumption. In addition, we adopt SOC (system on chip) design to reduce fabrication and system test costs, introduce a controllable high-speed infrared driver to enhance the security and quality of communication, and design reduced instruction set to enhance the quality and efficiency of business cards management and depress systematic redundancy. This chip is fabricated in 0.6 μm mixed-signal CMOS process (double poly, double metal), packaged as well as tested primarily.