IMAGE PROCESSING SEMICONDUCTOR PROCESSOR

摘要

It is possible to improve transfer efficiency of control information for plotting and display control as well as image data in a image processing semiconductor processor. The image processing semiconductor processor includes a CPU (2), a first bus (3) connected to the CPU, a DMAC (5) for controlling data transfer via the first bus, a bus bridge circuit (4) for transmitting/receiving data to/from the first bus, a 3-dimensional image processing section (6) for receiving a command from the CPU via the first bus and performing 3-dimensional image processing, a second bus (10) connected to the bus bridge circuit and first circuit modules (20 to 23), a third bus (11) connected to the bus bridge circuit and second circuit modules (30 to 33), and a memory interface circuit (7) which can be connected to the first bus, the second bus, the 3-dimensional image processing section, and an external memory (15). The bus bridge circuit can control direct memory access transfer between the external circuit and the second bus.