Communication apparatus having a standard serial communication interface compatible with radio isolation
First Claim
1. A communication apparatus comprising:
- a radio frequency (RF) circuit configured to operate on a radio frequency signal;
a digital processing circuit coupled to the RF circuit; and
a serial communications device comprising an internal interface circuit, the serial communications device coupled to the digital processing circuit and configured to buffer data communicated between the digital processing circuit and an external device;
wherein the internal interface circuit is disabled in response to an active mode of operation of the RF circuit to substantially minimize interference between the digital processing circuit and the serial communications device, andwherein the serial communications device includes a flow control logic circuit configured to control a data stream between the communication apparatus and the external device while the at least a portion of the serial communications device is disabled.
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Accused Products
Abstract
A communication apparatus including a digital processing circuit coupled to a radio frequency (RF) circuit and to a serial communications device. The serial communications device may be configured to buffer data communicated between the digital processing circuit and an external device. A portion of the serial communications device may be disabled during an active mode of operation of the RF circuit. The serial communications device may include a flow control logic circuit configured to control a data stream between the digital processing circuit and the external device while a portion of the serial communications device is disabled. In some embodiments, a portion of the digital processing circuit may be disabled during an active mode of operation of the RF circuit.
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Citations
27 Claims
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1. A communication apparatus comprising:
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a radio frequency (RF) circuit configured to operate on a radio frequency signal; a digital processing circuit coupled to the RF circuit; and a serial communications device comprising an internal interface circuit, the serial communications device coupled to the digital processing circuit and configured to buffer data communicated between the digital processing circuit and an external device; wherein the internal interface circuit is disabled in response to an active mode of operation of the RF circuit to substantially minimize interference between the digital processing circuit and the serial communications device, and wherein the serial communications device includes a flow control logic circuit configured to control a data stream between the communication apparatus and the external device while the at least a portion of the serial communications device is disabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of operating a communication apparatus including a radio frequency (RF) circuit, a digital processing circuit, and a serial communications device comprising an internal interface circuit, the serial communications device configured to communicate data between the digital processing circuit and an external device, the method comprising:
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buffering data communicated between the digital processing circuit and the external device within the serial communications device; disabling the internal interface circuit in response to an active mode of operation of the RF circuit to substantially minimize interference between the digital processing circuit and the serial communications device; and controlling a data stream between the serial communications device and the external device while the at least a portion of the serial communications device is disabled. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A mobile phone comprising:
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a radio frequency (RF) transceiver configured to operate on a radio frequency signal; a digital processing circuit coupled to the RF transceiver; and a serial communications device comprising an internal interface circuit, the serial communications device coupled to the digital processing circuit and configured to buffer data communicated between the digital processing circuit and an external device; wherein the digital processing circuit includes a processing unit configured to process data received from the external device; wherein the processing unit is disabled in response to an active mode of operation of the RF transceiver; wherein the internal interface circuit of the serial communications device is disabled in response to the active mode of operation of the RF transceiver to substantially minimize interference between the digital processing circuit and the serial communications device and place the digital processing circuit in a shutdown mode of operation; wherein the serial communications device includes a flow control logic circuit configured to control a data stream between the mobile phone and the external device while the at least a portion of the serial communications device is disabled; and wherein the RF transceiver, the digital processing circuit, and the serial communications device are fabricated on a single integrated circuit chip.
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Specification