Apparatus for controlling and managing voice codec chip on user board

Abstract

The invention relates to a device for controlling and managing the voice coding / decoding chip of user board, wherein it comprises: microprocessor on main control board; serial bus interface on the chip; microprocessor has serial bus interface connected to the serial bus interface of voice coding / decoding chip, to control and manage the chip. The invention uses the A / D bus of microprocessor or high-property serial bus interface to control and manage the CODEC chip, to avoid CPU on user board. And the user board can avoid microprocessor, and the communication circuit between microprocessor and main control board, to reduce cost, and improve manage efficiency.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a device for controlling and managing a subscriber board in a communication system. In particular, it relates to a device for controlling and managing a voice codec chip of a user board. Background technique [0002] In program-controlled switches and access network system equipment, a voice codec (CODEC) chip is widely used on the analog subscriber board, which completes seven basic functions of the analog subscriber circuit BORSCHT together with the subscriber interface circuit (SLIC): Battery function, Over Voltage Protection function, Ringing function, Supervision function, Codec function, Two / four wire hybrid conversion function, Test function )Features. [0003] The realization of these functions requires a microprocessor (CPU) to control and manage the CODEC chip. Because in the industry standard, the CODEC chip only supports the microprocessor interface of the se...

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Problems solved by technology

[0006] The disadvantage of this design is: on the one hand, the system is required to be equipped with a single-chip microprocessor and a HDLC communication circuit or other communication circuits for each user board. For example, if an access network frame is equipped with 12 user boards, Then the user board of the whole system needs to be equipped with 12 single-chip microprocessors and 12 HDLC communication circuits or other communication circuits, the circuit design of the whole system is complicated, and the cost increases; Other communication circuits communicate with the microprocessor on the user board to indirectly control and manage the CODEC chip on the user board. They cannot directly control and manage the CODEC chip on the user board. The software processing is complicated and the management efficiency is high. Low

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