Patent ID: 7664890
Filing Date: 2010-02-16
Classification: G06F

Abstract:
1. A system control device comprising: a system LSI section having a plurality of functional blocks integrated on a single chip, each functional block having a control register of which a predetermined byte includes at least one of a startup bit used to start up the functional block and a status bit indicating status of the functional block; an address decoding section for decoding an access address to the predetermined byte in one of the control registers, and issuing an access control signal indicating all bytes of the one of the control registers; an access control section for changing the access control signal indicating said all bytes of the one of the registers to an access control signal indicating the predetermined bytes of the plurality of control registers included in the system LSI section; a system control microcomputer section for simultaneously accessing the bytes indicated by the access control signal; and an access mode control register for indicating whether or not the changing of the access control signal by the access control section is to be performed.