GSM/TD-SCDMA dual-mode terminal chip having single chip and single DSP construction

Abstract

The present invention discloses a GSM / TD-SCDMA terminal chip of a single-chip single DSP architecture, which realizes the GSM and TD system programs on a single DSP, thereby reducing the chip area and cost, lowering power consumption and improving the performance of interactive systems. The chip includes: a micro-controller; a single clock generator and crystal vibration; and a single DSP chip. The single DSP chip includes a chip control module, responding GSM frame interrupt and TD frame interrupt in time, distributing system resources to the GSM mode and TD-SCDMA mode, controlling the start-up of the GSM and TD-SCDMA radiofrequency signal, and shielding the GSM timer interruption or TD-SCDMA timer interruption for manually controlling network or single mode terminal; a sleeping mode dual affirmation module, detecting that the GSM and TD-SCDMA are all at a sleeping allowing state for allowing the DSP chip to enter into a sleeping mode; a GSM accelerator and a TD-SCDMA accelerator, for performing auxiliary digital signal processing to GSM and TD-SCDMA under the control of a single DSP. The invention can be applied to the mobile communications field.

Description

technical field [0001] The invention relates to a mobile communication terminal chip, in particular to a GSM / TD-SCDMA dual-mode terminal chip realized by a single-chip single-DSP architecture. Background technique [0002] As the third-generation mobile communication standard with China's independent intellectual property rights, TD-SCDMA will start large-scale network construction and commercial use in recent years. There is the popularity of GSM network. Therefore, for a relatively long period of time, the TD network and the GSM network will be in a state of mutual coverage and simultaneous operation. If the same terminal can access two types of networks, it will bring great convenience to users. In addition, from the perspective of operators, in order to retain existing customers and protect initial investment, they also hope that terminals can support multiple modes of access. Therefore, the development of dual-mode terminals has become one of the most urgent needs in...

AI Technical Summary

Problems solved by technology

The relatively independent processing of GSM and TD-SCDMA requires more chip area and increased power consumption, while inter-mode communication means the interaction between hardware modules, which is not only complicated but also slow

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