Abstract:
A memory system includes a memory controller (405) and a memory component (410) coupled to each other. An interface of the memory component (410) is configured to receive a first signal from the memory controller (410) with read request information, retrieve the read data information (410) from the memory core in response to the request information, and transmit to the memory controller (410) a second signal containing the read data information. The read data information includes read data symbols, where the average duration of the read data symbols, measured at the interface, defines a symbol time interval. A first external access time is measured at the interface between a first read request and read data transmitted by the interface in response to the first read request. A second external access time interval is measured at the interface between a second read request and read data transmitted by the interface in response to the second read request. The difference between the first external access time and the second external access time is greater than one-half of the symbol time interval.
Abstract:
In one embodiment, an apparatus includes a clock channel to receive and distribute a clock signal to a plurality of data channels. At least some of the data channels may include: a first sampler to sample data; a second sampler to sample the data; and a deskew calibration circuit to receive first sampled data from the first sampler and second sampled data from the second sampler and generate a local calibration signal for use in the corresponding data channel. The apparatus may further include a global deskew calibration circuit to receive the clock signal from the clock channel, receive the first sampled data and the second sampled data from the plurality of data channels, and generate a global calibration signal for provision to the plurality of data channels. Other embodiments are described and claimed.
Abstract:
A method of processing a digital radio broadcast signal in a digital radio receiver includes: receiving baseband signal samples at a first sample rate; adjusting the sample rate of the baseband signals based on a difference between a receiver clock and a transmitter clock to produce adjusted baseband signal samples at a second sample rate; filtering the adjusted baseband signal samples to separate a digital component of the samples and an analog component of the samples, wherein the digital component and the analog component are synchronous; and separately demodulating the digital component and the analog component to produce a digital output signal and an analog output signal. A receiver that uses the method is also provided.
Abstract:
The invention relates to a method for detecting in a receiver (18) a transmitter local time (21) on a transmitter (4), comprising the following steps: determining a reference time (24) for the transmitter local time (21); receiving a transmission duration (23) from the transmitter (4), said transmission duration being the time elapsed on the transmitter (4) since the reference time (24) for the transmitter local time (21); and determining the transmitter local time (21) on the basis of the reference time (24) for the transmitter local time (21) and the received transmission duration (23). The invention also relates to a method for generating a time stamp (20) having a transmitter local time (21) for a data unit (19) generated by a transmitter (4).
Abstract:
A system for determining a unit time of a serial transmission protocol, wherein the serial transmission protocol defines a unit time (UT) by transmitting a calibration pulse having a predetermined length of N*UT and wherein a receiver is operated by system clock, includes: a clock divider for dividing the system clock by M, wherein M evenly divides N, and a detector for sampling a received data nibble length by using a dithered sampling clock.
Abstract:
Es wird ein Verfahren zur Funktionsprüfung einer PSI5-Empfangseinheit (1) eines Kraftfahrzeugsteuergeräts vorgestellt, wobei die PSI5-Empfangseinheit (1) von einer angeschlossenen PSI5-konformen PSI5-Sendeeinheit (2) Signale (SENS) empfängt, wobei eine Prüfsignalsendeeinheit (6) vorgesehen ist und diese Prüfsignalsendeeinheit (6) zu vorgegebenen Prüfzeitpunkten, in welchen kein Signal (SENS) von der PSI5-Sendeeinheit (2) zu erwarten ist, ein vorgegebenes Prüfsignal (Test) an die PSI5-Empfangseinheit (1) sendet, insbesondere zusammen mit dem Senden eines oder mehrerer Synchronisationsimpulse (SYNC) an die Sendeeinheit (2) die Prüfsignalsendeeinheit (6) in dieser definierten Zeitspanne das Prüfsignal (Test) sendet.
Abstract:
A data communication framing scheme of a bit stream that is divided among a plurality of discrete physical frames, each physical frame is of a definite number of symbols in duration, each symbol is associated with at least one sub-carrier in a plurality of sub-carriers, the physical frame is partitioned in time into at least an uplink zone and a downlink zone, the data framing scheme comprising a logical frame having a logical frame start position that is offset by a rational number of said symbols from a reference symbol, said reference symbol is selected from said definite number of symbols, wherein said logical frame extends in time to coincide with at least part of the duration of said physical frame and at least part of the duration of another physical frame in said plurality of discrete physical frames.