PORTABLE DEVICE AND MULTI-CENTER PROCESSING UNIT TESTING SYSTEM AND TESTING METHOD USING THE SAME

摘要

A portable device, and a system and a method for testing plural multi-center processing unit of the portable device are provided to disperse a connecting line of JTAG(Joint Test Action Group) ports of multi CPUs and interface connectors by using more than two interface connectors of a portable device having multi CPUs, and test a number of CPUs simultaneously. When K, N are integers more than zero and satisfy the condition of 1KN, the portable device(100) includes the followings: an ear jack terminal and one to N of JTAG(Joint Test Action Group) ports formed on one to N of CPUs; the first interface connector(30) to connect with the outside the ear jack and the first to the Kth JTAG ports; the first switch to individually connect the ear jack and the first to the Kth JTAG ports to the first interface connector; the second interface connector(40) to connect with the outside the (K+1)th to the Nth JTAG ports; and the second switch(50) to individually connect to the second interface connector the (K+1)th to the Nth JTAG ports.