GATEWAY 3250 CONEXANT MODEM DRIVER DETAILS:
|File Size:||18.2 MB|
|Supported systems:||Windows XP (32/64-bit), Windows Vista, Windows 7, Windows 8.1, Windows 10|
|Price:||Free* (*Free Registration Required)|
GATEWAY 3250 CONEXANT MODEM DRIVER
If you are having trouble deciding which is the right driver, try the Driver Update Utility for Gateway.
|Dell Precision T3600 AMD FirePro V4900 Graphics||IBM: Aptiva 2197-49N|
|Dell Wireless 1505 WLAN||Driver Info:|
|Gigabyte GA-PH67A-UD3 CloudOC||Driver Info:|
It is a software utility that will find the right driver for you - automatically. Step 2 - Install Your Driver After you download your new driver, then you have to install it.
Drivers Download: Goldship Model No
To install a driver in Windows, you will need to use a built-in utility called Device Manager. It allows you to see all of the devices recognized by your system, and the drivers associated with them.
Select the Driver tab. Click the Update Driver button and follow the instructions. In most cases, you will need to reboot your computer in order for the driver update to take effect. Driver downloads and updates come in a variety of file formats with different file extensions. Each file type has a slighty different installation procedure to follow. The local oscillator circuit also adjusts quadrature LO components a and b so as to correct any IQ amplitude or phase errors, as discussed further below. The local oscillator circuit includes a Direct Digital Frequency Synthesizer DDFS and a memory to generate a digital representation of the local oscillator signal.
The memory stores a read-only memory ROM lookup table. The ROM lookup table includes a plurality of entries, where each entry represents a phase of the local oscillator signal or a sine or cosine thereof. The DDFS can retrieve an entry from the ROM lookup table at each cycle or half-cycle of the local oscillator clock, for example, to provide the digital representation of the local oscillator signal. The DDFS generates a digital sinewave having IQ components based on the desired channel input from the summer The DDFS digitally converts phase information relating to the local oscillator signal to a digitized sinusoidal waveform.
The DDFS receives the phase information from the memory The DDFS includes a phase accumulator to receive phase information relating to the local oscillator signal with each successive clock cycle of the local oscillator circuit For example, the phase accumulator can receive first phase information during a first clock cycle, and second phase information during a second clock cycle, and so on. The DDFS further includes a phase-to-sine converter to convert phase information received from the memory into a digitized sinusoidal waveform.
For example, the phase-to-sine converter can provide a first waveform representing the sine of the phase information and a second waveform representing the cosine of the phase information. The first waveform is a first quadrature component a of the local Gateway 3250 Conexant Modem signal, and the second waveform is a second quadrature component b of the local oscillator signal, wherein the first and second components are digital representations of the local oscillator signal.
According to another embodiment, the memory also stores a frequency offset value. For example, the offset value can indicate a difference between the actual frequency of the local oscillator signal and the desired frequency of the local oscillator signal.
The frequency of the local oscillator signal can be set based on the offset value. For instance, the offset value can be combined with the local oscillator signal to provide a frequency-shifted local oscillator signal. The memory can also store a phase offset that indicates a phase difference between quadrature components of the local oscillator signal, determined by the demodulation circuitfor example. The offset value can be used to adjust the phase of at least one of the quadrature components of the local oscillator signal. Gateway 3250 Conexant Modem
Utilizing the offset value to correct the phase difference between the quadrature components of the local oscillator signal can eliminate the need for other quadrature correcting circuitry or software. For example, correcting the phase offset of the local oscillator signal using Gateway 3250 Conexant Modem DDFS can reduce the number of components needed in the receiverthereby reducing the cost of the receiver in an embodiment. In summary, the quadrature components of the local oscillator signal are generated independently in accordance with the embodiment shown in FIG. Therefore, the DDFS reduces any gain mismatch or phase mismatch between the quadrature components.
The frequency of the local oscillator signal can be based on a frequency control word associated with the local oscillator signal. For instance, a clock signal can be multiplied by the frequency control word to calculate the frequency of the local oscillator signal. The offset value stored in the memory can be used to calculate the frequency control word associated with the local oscillator signal. In an embodiment, the offset value is used to set the frequency of at least one of the quadrature components of the local oscillator signal. According to another embodiment, Gateway 3250 Conexant Modem receiver includes two DDFSs.
For instance, a first DDFS can be used to convert phase information relating to a first quadrature component of the local oscillator signal to a first digitized sinusoidal waveform. The second DDFS can be used to convert phase information relating to a second quadrature component of the local oscillator signal to a second digitized sinusoidal waveform. The digital representations of the local oscillator quadrature components are provided to digital-to-analog converters DACs The DACs can convert the digital representations into analog local oscillator signals.
For instance, the DACs can directly generate the analog local oscillator signals. Filters are coupled to the output of the DACs so as to reduce or eliminate unwanted frequencies from the quadrature local oscillator signals. The filters can be low pass filters or bandpass filters. According to an embodiment, the filters are narrow-band bandpass filters. File name: File size: MB Version: latest Downloads today: Downloads. Acer Conexant-Askey HCF V90 56K PCI Modem Gateway Conexant Modem Gateway 3250 Conexant Modem version: · Gateway Digitizer.
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