CONTROL APPARATUS OF MULTICORE CPU FOR MOBILE OBJECT, MICROCOMPUTER FOR MOBILE OBJECT AND MOBILE OBJECT OPERATION SUPPORTING APPARATUS

摘要

PPROBLEM TO BE SOLVED: To provide a technique relating to CPU control for continuing processing of high priority even when abnormality occurs in a CPU. PSOLUTION: The temperatures of four CPU cores 50, 52, 54, 56 constituting a multicore CPU 12 for a mobile object are detected by temperature sensors 80, 82, 84, 86. When the detected temperatures of the CPU cores 50 to 56 increase and arrive at a prescribed temperature, a clock setting register 92 in a CPU clock generation part 90 is set to maximum magnification and the CPU clock magnification values of the other clock setting registers 94, 96, 98 are reduced lower than the maximum magnification. Consequently, the operation clock frequencies of the CPU cores 52 to 56 other than the CPU core 50 can be reduced and the temperature of the multicore CPU 12 can be reduced while keeping the operation clock frequency of the CPU core 50 stored in a processing priority storage part 32 at a maximum frequency, even when processing of the highest priority is allocated to the CPU core 50. PCOPYRIGHT: (C)2008,JPO&INPIT