HPI-EMIF BRIDGE FOR HIGH-PERFORMANCE PARALLEL SIGNAL PROCESSING SYSTEM BY DOWNLOADING PROGRAM AND DATA EXECUTED FROM EXTERNAL SYSTEM TO DSP

摘要

PURPOSE: An HPI(Host Port interface)-EMIF(External Memory Interface) bridge for a high-performance parallel signal processing system is provided to process a signal effectively and fast by downloading a program and data needed for execution on an external system to a DSP(Digital Signal Processor), and executing the DMA(Direct Memory Access) transfer between local memories connected to the DSP in parallel. CONSTITUTION: A PCI(Peripheral Component Interconnect) controller(100) includes a PCI master controller(110) initializing a PCI bus, and sending an address and data to the PCI bus when the HPI-EMIF bridge is operated as a master, a PCI target controller(120) sending a PCI signal received from the PCI bus when the HPI-EMIF bridge is operated as a target, and a PCI configuration register(130) storing the data related to the DMA transfer between local memories. An internal controller(200) includes a DMA controller(210) controlling the DMA transfer between local memories, an SDRAM controller(220) controlling access of the local memory, and an HPI controller(230) controlling the HPI of the DSP in order to download the program and the data to the DSP from an external processor.