INTERFACE BETWEEN DSP AND ADPCM CODEC ON SELECTOR SIMULATOR IN BASE STATION

摘要

The present invention relates to a connection device between the ADPCM Codec and the DSP in the base station selector simulator device, floating point for performing high-speed data processing functions such as modulation and demodulation function to test and develop a digital mobile communication base station system, a terminal device, etc. employing the CDMA method A selector simulator with an arithmetic function and an ADPCM encoding method, comprising a two-stage latch and a flip-flop connected to an external pin of a DSP. A DSP status monitor for instructing to generate or receive; An ADCPM coded status monitor configured to have a two-stage latch connected to the data input / output pins of the ADPCM coder, and monitoring the output of the voice signal of the ADPCM coder to synchronize in-band; It consists of flip-flops and multiple AND and OR gates and receives in-band control signals from the DSP under the control of the DSP status monitoring unit to check for abnormalities, or in-band to the DSP by the control signals of the ADPCM encoding status monitoring unit. An in-band control signal generation and inspection unit for transmitting a control signal; In response to the ADPCM encoding status monitoring unit notifying that the ADPCM encoder generates a voice signal, the DSP transmits a request signal to the DSP for the DSP to receive along with the in-band control signal, or the DSP output detection signal from the DSP status monitoring unit. A DSP control unit which receives the notification and requests the ADPCM encoder to receive the voice signal; It includes a voice signal converter that transmits the signal between the DSP and the ADPCM encoder in the corresponding serial and parallel signals, thereby reducing the delay of information processing in the selector simulator by improving the processing speed of the DSP in the selector simulator. In addition, by using an inexpensive general handset as a voice generator and generating and adding in-band control signals in a relatively simple manner, there is an economical advantage that the cost can be drastically reduced in constructing the selector simulator device.