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Micronas Introduces Dual-Tuner DVB-T ExpressCard 54 Reference Design For Notebooks

Micronas announced the launch of MicMamba2D-XC, a dual-tuner DVB-T ExpressCard 54 reference design for notebook computers. MicMamba 2D-XC has two independent tuners on a single card. This allows notebook users to watch one program while recording another, delivering full PVR functionality in the user’s notebook computer. The notebook can now double as a portable TV or full media center. The dual-tuner design offers a second advantage -– the card can combine the signals from both tuners to increase signal quality while moving, or in marginal-reception areas. This capability, commonly called “antenna diversity”, is based on the patented ‘Maximum Ratio Combining’ technology, licensed from Rohde and Schwarz.

MicMamba 2D-XC is built on the ExpressCard 54 form factor, the new standard for notebook computers based on PCI Express, and uses the native PCI Express mode. Furthermore, MicMamba 2D-XC uses a low-differential PCI Express signaling voltage, much above the DVB-T frequency spectrum (2.5 GHz), to minimize interference into the tuner. Other bus standards like PCI (single ended 33 MHz) and USB 2.0 (480 MHz) are prone to interfere with the tuner. The small size and low power consumption of MicMamba 2D-XC means it fits into the new generation of PCI Express-based notebook computers easily and delivers long battery life.

MicMamba 2D-XC uses the DRX 3976D COFDM demodulator and exceeds all requirements of the NorDig-Unified v1.0.2 Receiver Specification. It allows a single design to be compatible with all DVB-T standards worldwide. The built-in diversity mode of DRX 3976D uses Maximum Ratio Combining technology. MicMamba 2D-XC also features the nGene APB 7202A PCI Express controller from Micronas and a MicroTuner MT2060 digital TV tuner from Microtune.

In a first for a PC Card TV class product, MicMamba 2D-XC is CENELEC-compliant. CENELEC sets very rigorous standards for electrical interference, and is a requirement for equipment sold for use in consumer living rooms. Micronas took this extra step to insure the best possible performance, and also to allow MicMamba 2D-XC to be used anywhere around the home.

Micronas’ nGene dual-channel multimedia PCI Express controller is certified by the PCI-SIG, the industry standard body for PCI Express technology, to be PCI Express 1.0a-compliant.

MicMamba 2D-XC is the latest member of a family of nGene-based reference designs supported by a common software model. The common software support across the family makes it easy to design world-standard products. MicMamba 2D-XC is is available now.

Source: Micronas

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