VLSI introduces two-chip DECT solution.

SAN JOSE, Calif.--(BUSINESS WIRE)--Feb. 6, 1995--Two processors which permit creation of powerful, cost-efficient DECT (Digital European Cordless Telecommunications) systems have been introduced by VLSI Technology's Wireless Products Division.

The VP23000 and the VP23001 implement the digital processing for DECT physical and MAC (Medium Access Control) layers.

The heart of the VP23000 is a powerful DECT protocol engine. For transmission it assembles the component fields of each time slot and then outputs data serially in the correct position in the current frame. During receive, the core synchronizes the serial bit stream from the radio baseband interface via the symbol synchronizer. This improves system range and performance in "noisy" environments.

The VP23000 brings together the DECT core and the G.721 transcoder. In the audio interface, the core passes 32kbps speech data to the G.721 transcoder via the multiport RAM. The device also has a software programmable radio interface, and the ability to work with any industry standard microcontroller, thereby giving maximum flexibility to system designers.

The chip also has a host processor interface that supports both the Motorola and Intel processor bus architectures as well as other popular microcontrollers. Also, the device can reduce the host processor's clock frequency to 1/16th of the systemclock and provide a 32 kHz clock to the slot counters to maintain synchronization and minimize power consumption while the handset is still in the standby mode. The low-power part consumes 60 mW at 5 V and 40 mW at 3 V.

The VP23001 integrates the DECT core and G.721 transcoder with an audio codec, and is the latest in the family of DECT processors from VLSI Technology. It incorporates all the functions necessary to implement a minimum-component count, low-power handset. The part contains a fully programmable PCM codec, a complete digital processing subsystem for the DECT physical layer, a versatile radio interface, and a flexible host processor interface allowing it to work with all popular processors and microcontrollers.

As in the VP23000, the heard of the device is the DECT core. The device has powerful radio and host processor interfaces, as well as flexible power management features.

Both parts come in 100-pin TQFP packages and cost sub-$10 in production quantities.

According to Tom Willey, director of VLSI's Wireless Products Division, "Our goal is to satisfy the requirement of those who are building the latest in wireless communications systems and we think these DECT parts will fit nicely with our Ruby II and GSM chips to offer a full portfolio to the market."

VLSI Technology Inc. (NASDAQ:VLSI) designs and manufactures application-specific integrated circuits (ASICs) and application-specific standard products (ASSPs) based on its FSB building block library technology. Targeting its offerings toward the computing, communications and entertainment marketplaces, the company offers its customers advanced system-level integration capabilities. VLSI's products are designed into desktop and portable computers, networks and wireless voice and data equipment, and other state-of-the-art systems. The company is based in San Jose and has approximately 2,700 employees worldwide.

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Note to Editors: FSB is a trademark of VLSI Technology Inc.

CONTACT: VLSI Technology Inc.

Tom Mahon, 510/937-4921 (editorial)

Tom Willey, 408/434-7969 (reader)