Semiconductor Device, Radio Communication Terminal Using the Same, and Control Method

Abstract

A communication terminal according to one aspect of the present invention includes a baseband LSI that performs baseband processing for communication, an application LSI that includes a vocoder function and performs processing according to an application, an audio LSI that performs one of D/A conversion and A/D conversion on audio data, and a switch circuit that is installed in the application LSI and connects a data path between the audio processor LSI and the baseband LSI.

1 - 12 . (canceled) 
     
     
         13 . A radio communication device comprising:
 an antenna;   a radio frequency circuit configured to receive a reception signal through the antenna;   a baseband processor configured to perform baseband processing and execute vocoding;   an audio processor configured to execute a D/A conversion and an A/D conversion on audio data and execute vocoding; and   an application processor, configured to execute an application program, including a switch circuit configured to:
 connect a first data path between the audio processor and the application processor when the application processor executes vocoding, and 
 connect a second data path between the audio processor and the baseband processor when the baseband processor executes vocoding. 
   
     
     
         14 . The radio communication device according to  claim 13 ,
 wherein the switch circuit selectively disconnects the second data path between the audio processor and the baseband processor when only the application processor executes vocoding.   
     
     
         15 . The radio communication device according to  claim 13 ,
 wherein the baseband processor is configured to connect to a Long Term Evolution (LTE) network.   
     
     
         16 . The radio communication device according to  claim 13 , further comprising:
 a speaker configured to reproduce audio data that is D/A converted by the audio processor.   
     
     
         17 . The radio communication device according to  claim 16 ,
 wherein the application processor is configured to mute the audio data that is reproduced from the speaker according to a timing of switching by the switch circuit.