Abstract:
An apparatus comprises a number of sub-systems and a control interface operably coupled to sub-systems for routeing data therebetween. A strobe generation function is operably coupled to the control interface and configured to generate a plurality of different strobe signals to differentiate between different intended receiving devices. Thus, different strobe signals may be multiplexed onto a single control interface link, based on a pulse width or voltage magnitude characteristics of the respective strobe signals. A strobe decoder function is operably coupled to the control interface and configured to decode a plurality of different strobe signals to differentiate between triggering sub-systems on receiving devices.
Abstract:
A method for calibrating an optical transceiver. The method can include configuring optical switches to enable routing at least one output signal of modulator circuitry operably coupled to a first receive path of a coherent optical transceiver. The method can include configuring the input to at least one modulator to generate at least one first stimulus signal. The method can include configuring a path from the first receiver analog-to-digital converter to an adaptive algorithm circuitry. The method can include adapting at least one bias setting of a photodiode associated with the first receiver in response to at least one first stimulus detected at the first receiver analog-to-digital converter to an adaptive algorithm circuitry. The method can include determining an optimum value of a photodiode associated with the first receiver.
Abstract:
A semiconductor device comprises sampling logic, comprising: input sample path selection logic arranged to enable at least one input sample path; sampler logic arranged to receive and sample an input data signal in a serial data stream in accordance with a phase of the at least one enabled input sample path; and transition detection logic arranged to detect transitions within the received input data signal. The input sample path selection logic is further arranged, upon detection of a transition within the received input data signal, to determine if the phase of the at least one input sample path is a phase having a largest window between logic values; and if it is determined that the phase of the at least one input sample path is not the phase having a largest window between logic values, to enable at least one input sample path comprising a more appropriate phase.
Abstract:
A method of processing location information on a mobile device which includes a primary receiver for receiving a primary signal; a diversity receiver for receiving a diversity signal or location information; a diversity combiner which can combine primary and diversity signals to form a combined signal; and a first processing unit for processing the combined signal; the method comprising the steps of: identifying whether the device is in a location mode or a diversity mode; if the device is in location mode, disabling the diversity combiner; passing the output from the primary receiver directly to the first processing unit; and passing location information from the diversity receiver to a location processing unit.
Abstract:
A wireless communication device comprises a number of sub-systems and clock generation logic arranged to generate at least one clock signal to be applied to the number of sub-systems. One of the number of sub-systems comprises sampling logic for receiving input data and performing initial sampling on an input data bit using multiple separated phases of a clock period of the at least one clock signal applied to the sampling logic thereby producing multiple phase separated sampled outputs of the input data bit. The sampling logic is configured to perform a number of re-sampling operations on the multiple phase separated sampled outputs at a number of intermediate phases thereby producing multiple phase separated intermediate sampled outputs prior to performing a final sample of the multiple phase separated intermediate sampled outputs at a single phase of the at least one clock signal to produce a sampled input data signal.
Abstract:
Methods and device for transmitting a sequence of transmission bursts in a wireless device. The method includes transmitting a sequence of transmission bursts according to a transmission schedule. The method is characterized by: receiving, at a radio frequency integrated circuit, prior to a transmission of at least one transmission burst of the sequence, information representative of the timing of the transmission of the at least one transmission burst; and generating timing signals, by the radio frequency integrated circuit that implement the transmission schedule. A wireless device includes a base band integrated circuit adapted to determine a transmission schedule of a sequence of transmission bursts. The wireless device is characterized by including a radio frequency integrated circuit that is adapted receive information representative of the timing schedule and to autonomously control a transmission of the sequence of transmission bursts.
Abstract:
A modulation system can switch between two modulation modes. In order to comply with limits on peak power in spectral bands outside the RF operating one the transmitter is required to ramp down to a condition of minimal power. To avoid fixed ramping and trailing bits, the transmitting signal is subjected to FIR filtering. The two FIR filters are primed with a sequence using a parallel input mode before serially entering the information data.
Abstract:
An electronic device comprises a number of sub-systems coupled via an interface. One of the number of sub-systems comprises logic for receiving a frame of input data having a plurality of phases on respective data paths. The electronic device further comprises logic for performing cross correlation on the received input data with a pre-determined bit pattern, operably coupled to selection logic, for selecting a single phase from the plurality of phases sent to the interface to sample the received input data in a middle region of a data bit period in response to the cross correlation.
Abstract:
A semiconductor device comprises sampling logic, comprising: input sample path selection logic arranged to enable at least one input sample path; sampler logic arranged to receive and sample an input data signal in a serial data stream in accordance with a phase of the at least one enabled input sample path; and transition detection logic arranged to detect transitions within the received input data signal. The input sample path selection logic is further arranged, upon detection of a transition within the received input data signal, to determine if the phase of the at least one input sample path is a phase having a largest window between logic values; and if it is determined that the phase of the at least one input sample path is not the phase having a largest window between logic values, to enable at least one input sample path comprising a more appropriate phase.
Abstract:
A wireless communication unit comprises a transmitter having a power amplifier and a feedback path operably coupled to the power amplifier. The feedback path comprises a coupler for feeding back a portion of a signal to be transmitted and a detector for detecting a power level of the fed back signal. A controller provides a ramp signal to the power amplifier that controls an amplitude characteristic of the signal to be transmitted. Averaging logic is operably coupled to the detector and arranged to average the detected power level over a first period. Comparison logic is operably coupled to the averaging logic and arranged to compare the average detected power level with a reference value. The controller is operably coupled to the comparison logic and arranged to scale a ramp signal applied to the power amplifier in response to the comparison.