Implementation and Method of Audio Integrated Memory Access Using First-In First-Out Memory on Peripheral Device Connection (PCI) Bus

摘要

The present invention allows the first-in, first-out memory on the Peripheral Device Connection (PCI) bus to control the integrated memory access data port of the audio processor to enable high speed transfer of data between the main memory and the audio processor in the host system without host intervention. The present invention relates to an audio integrated memory access implementation circuit and a method using a first-in first-out memory on a peripheral device connection bus that can reduce the burden of a host.;A characteristic configuration includes a peripheral device connection bus interface unit for interfacing a multimedia device with a peripheral device connection bus that is a host bus, an integrated memory access control unit for controlling an integrated memory access operation from an audio processor, and a peripheral connection bus. A first to second first-in first-out memory unit connected to an interface unit and an audio processor through a data bus and storing data for audio reproduction and audio recording by a control signal of the integrated memory access control unit, and through the first-in first-out memory unit; It is composed of audio processor which receives audio data from host and converts digital data into analog signal and outputs it, or converts analog audio signal input through microphone and line input into digital data and transmits it to host. A first step of determining whether the integrated memory access request signal is generated from the video processor and staying in a standby state if the integrated memory access request signal is not generated, and again determining whether the integrated memory access request signal is a play / record request signal when the integrated memory access request signal is generated; A second step of transmitting a reproduction approval signal to the audio processor if the result of the determination in the first step is a reproduction request signal, and reading the data of the first first-in first-out memory unit and transmitting the data to the audio processor; The third step of transmitting a recording approval signal to the audio processor and reading data from the audio processor and transmitting the data to the second first-in first-out memory unit, and accessing the integrated memory when the data transfer in the second and third steps is completed. Returning to the step of determining whether a request signal has been generated, the next integrated memory access request signal is generated. Inspectors in the autumn is made of an fourth step.