Claims
- 1. A telephony controller circuit, comprising:
a coder-decoder circuit (CODEC) including at least one analog-to-digital converter (ADC), said CODEC coupled to send and receive telephony signals; a multiplexer coupled to said ADC; and receiving means for receiving an analog sense signal, said receiving means coupled to said multiplexer; wherein said CODEC and said multiplexer are disposed on the same integrated circuit; and whereby said multiplexer allows said telephony signals and said analog sense signal to share said ADC.
- 2. The circuit of claim 1, wherein said receiving means can receive a plurality of analog sense signals.
- 3. The circuit of claim 2, wherein one of said plurality of analog sense signals is a battery status signal.
- 4. The circuit of claim 2, wherein one of said plurality of analog sense signals is a line test signal.
- 5. The circuit of claim 1, further comprising a digital signal processor coupled to said ADC.
- 6. A method for performing auxiliary functions in a telephony controller circuit, comprising:
a. receiving an analog sense signal; b. receiving an analog voice signal; c. multiplexing said analog sense signal with said analog voice signal; and d. inputting said multiplexed signal to an analog-to-digital converter; whereby said analog sense signal, and said analog voice signal share said analog-to-digital converter.
- 7. The method of claim 6, wherein said analog sense signal a battery status signal.
- 8. The method of claim 6, wherein said analog sense signal is a line test signal.
- 9. A telephony controller circuit, comprising:
an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC); a digital signal processor coupled to said ADC and to said DAC; a means for sending an analog voice signal to an external telephone coupled to said DAC; a multiplexer coupled to said ADC; a means for receiving an analog voice signal coupled to said multiplexer; and a means for receiving an analog sense signal coupled to said multiplexer; whereby said analog sense signal and said analog voice signal share said ADC.
- 10. A method for performing auxiliary functions in a telephony controller circuit, comprising:
a. receiving an analog sense signal and an analog voice signal; b. sensing a state condition that depends on whether said analog voice signal is present; c. inputting said analog voice signal to an analog-to-digital converter (ADC) if said state condition indicates that said analog voice signal is present, while blocking said analog sense signal; and d. inputting said analog sense signal to said ADC when said state condition indicates said analog voice signal is not present.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. provisional application 60/437,741 entitled “Integrated Telephony Controller and Method for Performing Auxiliary Functions in the Same” filed Jan. 3, 2003, which is incorporated by reference herein.
Provisional Applications (1)
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Number |
Date |
Country |
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60437741 |
Jan 2003 |
US |