摘要:
A device for the production of standard compliant signals, for example pulse-type signals in a telecommunication network, serves the production and adaptation and/or pre-distortion of signals with a certain signal form, which is defined dependent on a standard signal form specified in a standard. The device comprises signal generation means (10) for the production of the signals with a certain signal form and signal adjustment means (20) for the adaptation or pre-distortion of the signals. The signal generation means (10) according to the invention are digitally realized, by using a programmable shift register (14), which contains multipliers specified by the standard signal form for multiplication with a digital input signal (1). The signal adjustment means (20) comprise substantially scalable digital filter arrangements in the form of a serial connection of digital filters (22) with a downstream multiplexer (24). Moreover, the invention provides attenuating means (50) for attenuation of the signal dependent on the characteristics of the telecommunication channel.
摘要:
A device for the production of standard compliant signals, for example pulse-type signals in a telecommunication network, serves the production and adaptation and/or pre-distortion of signals with a certain signal form, which is defined dependent on a standard signal form specified in a standard. The device comprises signal generation means (10) for the production of the signals with a certain signal form and signal adjustment means (20) for the adaptation or pre-distortion of the signals. The signal generation means (10) according to the invention are digitally realized, by using a programmable shift register (14), which contains multipliers specified by the standard signal form for multiplication with a digital input signal (1). The signal adjustment means (20) comprise substantially scalable digital filter arrangements in the form of a serial connection of digital filters (22) with a downstream multiplexer (24). Moreover, the invention provides attenuating means (50) for attenuation of the signal dependent on the characteristics of the telecommunication channel.
摘要:
To reconstruct data transmitted over a transmission path, for example a cable, the corresponding signal received by the receiver is firstly amplified and subsequently made discrete by means of an A/D-converter (6), in order to obtain a suitable digital signal, whereby the signal amplified for this purpose is scanned with a relatively low sampling rate, which can frequently lie in the Nyquist range or can be even less than the Nyquist frequency. Subsequently the signal made discrete in this way is filtered by means of a digital high pass filter (8) and equalized by means of a digital cable approximation filter (9) to compensate any distortion occurring during the transmission over the transmission path. By means of a phase locked loop (14, 18) a regenerated clock (CLK) and synchronous with this clock the originally transmitted data (DATA) is recovered from the digital signal processed in this way.
摘要:
A method and a device for reconstructing data, clocked at a symbol rate, from a signal which has been distorted by transmission of a transmission link, are disclosed. The method or respectively, the device, being predominantly performed or implemented, respectively, by means of digital circuit technology in order to improve the quality of the data recovery. The method includes amplifying the signal amplitude attenuated by the transmission; filtering high-frequency interference frequencies above the symbol rate; discretizing the analog signal by means of an analog/digital converter; performing a cable approximation by means of a digitally implemented cable approximation filter in order to obtain an equalized signal; and recovering the data from the equalized signal by means of a phase-locked loop.
摘要:
A semiconductor memory including a plurality of memory banks disposed on an integrated circuit, each memory bank including an array of memory cells, wherein a first portion of memory cells of the plurality of memory banks has a first access speed and a second portion of memory cells of the plurality of memory banks has a second access speed, wherein the first access speed is different from the second access speed.
摘要:
A system including a central processing unit, a first memory channel being configured to couple the central processing unit to a first semiconductor memory unit, wherein the first memory channel is configured to be clocked with a first clock frequency, and a second memory channel being configured to couple the central processing unit to a second semiconductor memory unit, wherein the second memory channel is configured or configurable to be clocked with a second clock frequency smaller than the first clock frequency.
摘要:
Method and device for transmitting outgoing useful signals and an outgoing clock signal. Useful signals and a clock signal are transmitted from a transmitter via a first line pair and a second line pair to a receiver. A first useful signal is transmitted in the form of a modulated difference between the electrical potentials of the first line pair. A second useful signal is transmitted in the form of a modulated difference between the electrical potentials of the second line pair. The clock signal is transmitted in the form of a modulated difference between the average value of the potentials of the first line pair and the average value of the potentials of the second line pair.
摘要:
In an embodiment, a memory device comprises a clock generating unit being configured to generate a read clock signal, the clock generating unit being connected to a first clock signal contact configured to send the read clock signal, and the clock generating unit being connected to data signal contacts being configured to send data signals, the memory device being configured to send the data signals in a phase and frequency accurate (source synchronous) manner with regard to the read clock signal.
摘要:
A method of training connections in a memory arrangement includes training a connection between a memory section and a receiver portion of a controller for controlling the memory arrangement before or simultaneously with a training of essentially all other connections between elements of the memory arrangement that are to be trained.
摘要:
Horizontal dual in-line memory modules are disclosed. In one embodiment, the memory module includes a circuit board, a plurality of memory chips attached to a top surface of the circuit board, and a plurality of connector contacts disposed under a back surface of the circuit board and extending away from the memory chips, the connector contacts being electrically coupled to the memory chips, the back surface opposite the top surface of the circuit board.