Bumper Specialties, Inc.

The last couple of years have seen an increased level of interest in Ultra Wide Band (UWB) technologies from both the standardization bodies and the chip manufacturing organizations.

One notable exception is Gentoo Linux [14], which markets not adistribution but rather a system knowledge tool that allows designersto create their own custom distributions tailored to a specificplatform and need. The designer is in charge of selecting the requiredcomponents, and the system knowledge tool guarantees that all theappropriate packages are delivered and all dependencies are respected.

Resource management for application-level QoS Many embedded applications in the communications and consumer space are required to perform to a certain level in order to meet end user expectations, such as video frame rate, audio quality and no lost or dropped communications packets. These system-level considerations have now migrated down to the architecture of an SoC, which can be likened to the hub of an advanced communications network, with many different types of data stream – some latency-critical, others bandwidth-critical – and peripherals requiring attention. META’s Automatic MIPS Allocation process provides automatic resource management in hardware, ensuring that each thread of execution gets the needed MIPS and has the required response time.

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One notable exception is Gentoo Linux [14], which markets not adistribution but rather a system knowledge tool that allows designersto create their own custom distributions tailored to a specificplatform and need. The designer is in charge of selecting the requiredcomponents, and the system knowledge tool guarantees that all theappropriate packages are delivered and all dependencies are respected.

Resource management for application-level QoS Many embedded applications in the communications and consumer space are required to perform to a certain level in order to meet end user expectations, such as video frame rate, audio quality and no lost or dropped communications packets. These system-level considerations have now migrated down to the architecture of an SoC, which can be likened to the hub of an advanced communications network, with many different types of data stream – some latency-critical, others bandwidth-critical – and peripherals requiring attention. META’s Automatic MIPS Allocation process provides automatic resource management in hardware, ensuring that each thread of execution gets the needed MIPS and has the required response time.

The second crucial characteristic is slew rate. The slew-rate can be calculated from the signal amplitude and pixel rate. To maintain video signal integrity for a pixel rate of 139.5MHz and a swing of ~1V transition during ¼ of a clock period:

1) Deinterlacing to displaythe data on a progressive screen, a time-consuming algorithm that canconsume a non-trivial amount of processing power. 2) Adding overlay information.3) Blending with anotherstream for a picture-in-picture. Please note, that thepicture-in-picture feature requires two TV tuners, which are availableat the Hauppauge WinTV PVR 500MCE, and simultaneous decoding of twoMPEG2 streams.

[21]P. Cook, Network Oriented Base Stations”, SDR Forum Document Number SDRF-01-I-0057-V0.00, http://www.sdrforum.org/MTGS/mtg_25_sep01/01_i_0057_v0_00_nobs_09_25_01.pdf.

RH005100R0FC02_Vishay Dale

Resource management for application-level QoS Many embedded applications in the communications and consumer space are required to perform to a certain level in order to meet end user expectations, such as video frame rate, audio quality and no lost or dropped communications packets. These system-level considerations have now migrated down to the architecture of an SoC, which can be likened to the hub of an advanced communications network, with many different types of data stream – some latency-critical, others bandwidth-critical – and peripherals requiring attention. META’s Automatic MIPS Allocation process provides automatic resource management in hardware, ensuring that each thread of execution gets the needed MIPS and has the required response time.

The second crucial characteristic is slew rate. The slew-rate can be calculated from the signal amplitude and pixel rate. To maintain video signal integrity for a pixel rate of 139.5MHz and a swing of ~1V transition during ¼ of a clock period:

1) Deinterlacing to displaythe data on a progressive screen, a time-consuming algorithm that canconsume a non-trivial amount of processing power. 2) Adding overlay information.3) Blending with anotherstream for a picture-in-picture. Please note, that thepicture-in-picture feature requires two TV tuners, which are availableat the Hauppauge WinTV PVR 500MCE, and simultaneous decoding of twoMPEG2 streams.

Resource management for application-level QoS Many embedded applications in the communications and consumer space are required to perform to a certain level in order to meet end user expectations, such as video frame rate, audio quality and no lost or dropped communications packets. These system-level considerations have now migrated down to the architecture of an SoC, which can be likened to the hub of an advanced communications network, with many different types of data stream – some latency-critical, others bandwidth-critical – and peripherals requiring attention. META’s Automatic MIPS Allocation process provides automatic resource management in hardware, ensuring that each thread of execution gets the needed MIPS and has the required response time.

The second crucial characteristic is slew rate. The slew-rate can be calculated from the signal amplitude and pixel rate. To maintain video signal integrity for a pixel rate of 139.5MHz and a swing of ~1V transition during ¼ of a clock period:

1) Deinterlacing to displaythe data on a progressive screen, a time-consuming algorithm that canconsume a non-trivial amount of processing power. 2) Adding overlay information.3) Blending with anotherstream for a picture-in-picture. Please note, that thepicture-in-picture feature requires two TV tuners, which are availableat the Hauppauge WinTV PVR 500MCE, and simultaneous decoding of twoMPEG2 streams.

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The second crucial characteristic is slew rate. The slew-rate can be calculated from the signal amplitude and pixel rate. To maintain video signal integrity for a pixel rate of 139.5MHz and a swing of ~1V transition during ¼ of a clock period:

1) Deinterlacing to displaythe data on a progressive screen, a time-consuming algorithm that canconsume a non-trivial amount of processing power. 2) Adding overlay information.3) Blending with anotherstream for a picture-in-picture. Please note, that thepicture-in-picture feature requires two TV tuners, which are availableat the Hauppauge WinTV PVR 500MCE, and simultaneous decoding of twoMPEG2 streams.

1) Deinterlacing to displaythe data on a progressive screen, a time-consuming algorithm that canconsume a non-trivial amount of processing power. 2) Adding overlay information.3) Blending with anotherstream for a picture-in-picture. Please note, that thepicture-in-picture feature requires two TV tuners, which are availableat the Hauppauge WinTV PVR 500MCE, and simultaneous decoding of twoMPEG2 streams.

[21]P. Cook, Network Oriented Base Stations”, SDR Forum Document Number SDRF-01-I-0057-V0.00, http://www.sdrforum.org/MTGS/mtg_25_sep01/01_i_0057_v0_00_nobs_09_25_01.pdf.

DDR/QDR memory interface design problem DDR and/or Quad Data Rate (QDR) memory devices provide and accept source-synchronous data at twice the rate of the device's clock frequency. This means that data is transferred on the rising and falling edges of the capture clock. In addition, these devices require capture clock skew adjustments to ensure proper clock/data relationships. As noted earlier, several FPGA devices now include DDR interface technology support within I/O blocks and on-board PLL networks. In using these advanced building blocks, you need to conform to memory design requirements. This means that you have to have a way to manipulate the blocks accurately and reliably. To illustrate this point, let's take a look at a design requirement for a read operation with a QDR II SRAM source-synchronous interface.

While the UWB signal has an inherent anti-jam capability with regards to other signals, it unfortunately is vulnerable to self-interference. If multi-path replicas of the wavelet data-stream arrive within one wavelet duration of the first-to-arrive component (usually the direct path) destructive interference may result.