Systems and methods for performing off-chip data communications at a high data rate
AssigneeQUALCOMM Incorporated
InventorsVivek Mohan, Abhay Dixit
Life of this patent
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Abstract
An electronic device is described. The electronic device includes a first integrated circuit (IC) and a second integrated circuit (IC). The electronic device also includes a multiplexer configured to multiplex a parallel data signal into a serial data signal, and a transmitter configured to transmit the serial data signal from the first IC to the second IC. The electronic device further includes a receiver configured to receive the serial data signal. The receiver includes a clamp circuit configured to clamp the voltage swing of an analog node within a determined range. The clamp also helps to extend the bandwidth of the receiver.
Claims24
An electronic device comprising:
- a first integrated circuit (IC);
- a second integrated circuit (IC);
- a multiplexer configured to multiplex a parallel data signal into a serial data signal;
- a transmitter configured to transmit the serial data signal from the first IC to the second IC;
- a receiver configured to receive the serial data signal, the receiver comprising:
- a clamp circuit configured to clamp the voltage swing of an analog node within a determined range and to extend the bandwidth of the receiver.
A method for performing off-chip data communications, the method comprising:
- multiplexing parallel data signals into a serial data signal;
- transmitting the serial data signal from a first chip to a second chip;
- clamping a voltage swing associated with an analog node within a determined voltage range and to extend the bandwidth of a receiver;
- demultiplexing the serial data signal into the parallel data signals;
- and
- processing the parallel data signals.
An apparatus comprising:
- means for multiplexing parallel data signals into a serial data signal;
- means for transmitting the serial data signal from a first chip to a second chip;
- means for clamping a voltage output swing associated with an analog node within a determined voltage range and to extend the bandwidth of a receiver;
- means for demultiplexing the serial data signal into the parallel data signals;
- and
- means for processing the parallel data signals.
An integrated circuit for performing off-chip data communications, the integrated circuit comprising:
- a receiver configured to receive a serial data signal, the receiver comprising:
- a clamp circuit configured to bias an analog node within the receiver and clamp a voltage swing associated with the analog node within a determined voltage range and to extend the bandwidth of the receiver;
- a programmable current leakage circuit configured to prevent cascode output stage devices of the receiver from entering a deep cut-off region;
- and
- a delay element configured to clamp the output of the receiver at a logic low until internal receiver nodes approach a corresponding quiescent point and the receiver bias current approaches a quiescent value.
Dependencies are inferred from the claim text.