Patent ID: 9047262
Filing Date: 2015-06-02
Classification: G06F

Abstract:
1. A semiconductor data processing device comprising: a central processing unit for executing commands; a communication control circuit for performing communication control for time-triggered communication; and an interrupt control circuit for performing interrupt control to cause the central processing unit to perform processing in response to an interrupt request, wherein the communication control circuit has a local time timer configured for time-triggered communication and which generates a timer interrupt request for time-triggered communication based on time counting by the local time timer, wherein the interrupt control circuit performs control such that, when a timer interrupt request for time-triggered communication is received, the central processing unit in response to the timer interrupt, request delays, by a predetermined reservation time, starting interrupt processing, wherein the data processing device further comprises a memory for storing a timing table which holds timing data to be set on the local time timer to specify timing of generating a timer interrupt request for time-triggered communication, and wherein the communication control circuit refers to timing data held in the timing table every time the count of the local time timer is updated and, when the timing data referred to coincides with the updated count, generates a timer interrupt request.