Apparatus and method for protocol interface

• US 5,978,688 A
• Filed: 10/04/1996
• Issued: 11/02/1999
• Est. Priority Date: 12/29/1995
• Status: Expired due to Term

• Current Assignee: Microsemi Semiconductor (U.S.) Inc. (Microchip Technology Incorporated)
• Original Assignee: Advanced Micro Devices, Inc.
• Inventors: Hendrickson, Alan, Schnizlein, Paul, Mullins, Jacqueline
• Primary Examiner(s): WOLFE JR, WILLIS RAY
• Application Number:
  US08/726,268
• Time in Patent Office: 1,124 Days
• Field of Search: 455/462, 455/509, 455/550, 455/557, 455/561, 455/575, 370/510, 370/512, 370/521, 370/524, 370/280, 370/278, 370/294, 370/321, 395/500, 379/88.13, 379/88.14
• US Class Current: 455/557
• CPC Class Codes: H04M 1/733 with a plurality of base stations connected to a plurality of lines for selection in cordless PBX H04W84/16

Abstract

A telephone for digital cordless telecommunications includes a frame formatter for logical channel formatting of transmitted baseband signals and received baseband signals. The telephone comprises a radio interface connection with the frame formatter, a FIFO/codec interface conductively coupled to the frame formatter, an interrupt interface conductively coupled to the frame formatter, a data control logic interface conductively coupled to the frame formatter, and a microcontroller interface conductively coupled to the frame formatter.

Claims

1. An integrated circuit for use in a digital cordless telephone, the telephone including a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the integrated circuit further comprising:

a. an RF interface with said frame formatter comprising transmit and receive lines;

b. a FIFO/codec interface with said frame formatter for synchronizing data transfer between the frame formatter and an audio front end circuitry;

c. a data control logic circuitry interface for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit;

d. an interrupt controller interface for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter; and

e. a microcontroller interface for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter.

2. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit; and

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter.

3. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit;

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively.

4. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit;

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry.

5. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit;

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter.

6. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit.

7. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit; and

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter.

8. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit;

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter.

9. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit.

10. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit; and

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter.

11. A method of communication, the method using an integrated circuit within a digital cordless telecommunications system comprising a base unit and a hand unit, the integrated circuit including a frame formatter for logical channel formatting of RF signals in a format comprising a transparent voice B-channel, an error-controlled, packetized control D-channel, and a framing synchronization SYN-channel, and further having connected to the frame formatter, a FIFO/codec, data control logic circuitry, an interrupt controller, and a microcontroller, the method including formatting a transmitted baseband signal and a received baseband signal, the method comprising the steps of:

interfacing with an RF transmitter and receiver, for delivery and reception of the transmitted baseband signal and the received baseband signal, respectively;

interfacing with the FIFO/codec interface for synchronizing data transfer between the frame formatter and an audio front end circuitry;

interfacing with the microcontroller for programming registers that enable and control the B-channel, D-channel, and the SYN-channel of the frame formatter;

interfacing with the interrupt controller for receiving status bits and interrupt signals related to the B-channel, D-channel, and the SYN-channel of the frame formatter; and

interfacing with the data control logic circuitry for transmitting and receiving data control messages associated with a telecommunications link between the base unit and the hand unit.