METHOD FOR TRANSFERRING BETWEEN FPGA AND DSP CONNECTED WITH SRIO INTERFACE

摘要

The present invention relates to a method for transmitting data between FPGA and DSP which are connected through an SRIO interface, wherein the method enables a stable and efficient transmission of data from FPGA and DSP using mix of a scheduling method and an interrupt method in a system where FPGA and DSP are connected through the SRIO interface. In the method for transmitting data of the present invention, the transmission of data between FPGA and DSP which are connected through an SRIO interface is performed by FPGA. And the method comprises step (a) of receiving an event table, which includes a data transmission schedule, from the DSP and storing the event table; step (b) of executing each event recorded in the event table and transmitting the data of the event to the DSP; step (c) of transmitting a doorbell message which includes information on types of the data transmitted to the event after executing each event in step (b); step (d) of receiving decoded data from an internal decoding block and delivering the decoded data to the DSP when a writing interrupt is occurred by the internal decoding block; and step (e) of transmitting the doorbell message, which includes information on types of the decoded data, to the DSP. [Reference numerals] (AA) Start; (BB) End; (S30) Event table received?; (S32) Updating and storing the event table; (S34) Executing the event table; (S36) Symbol interruption generated?; (S38) Data to be transmitted exists?; (S40) At least 256 byte?; (S42) Separating into 256 byte; (S44) Transmitting in 256 byte-unit; (S46) The event ended?; (S48,S56) Transmitting a doorbell; (S50) The Event of the symbol ended?; (S52) Writing operation interruption generated?; (S54) Transmitting the data; (S58) Executing the entire event table?