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HSPA SoC integrates 3G protocols

Posted: 17 Dec 2007     Print Version  Bookmark and Share

Keywords:HSUPA 3G baseband  single-chip HSPA processor  RF transceiver  Bluetooth 2.1 

Broadcom Corp. is introducing a single-chip high-speed packet access (HSPA) processor that's said to integrate all key 3G cellular and mobile technologies on a low-power, 65nm CMOS die.

The BCM21551 integrates dual ARM11 processors to provide open OS support. It features full stereo music capabilities for both headset and stereo speakers, along with integrated five-band graphic equaliser and digital mixing capabilities. The SoC has a high-speed uplink packet access (HSUPA) 3G baseband, multiband RF transceiver, Bluetooth 2.1 with enhanced-data-rate technology, FM radio receiver and FM radio transmitter. It features multimedia processing, up to 5Mpixel camera support and 30fps video with TV-out. HSDPA, W-CDMA and Edge protocols are also supported.

The chip has a MIPI serial interface for the LCD and image sensor, and an analogue PHY for 480Mbit/s USB 2.0 applications that enable the rapid transfer of multimedia files to and from the handset.

The 21551 allows downloads at up to 7.2MBps and lets users upload content, such as pictures and video, at up to 5.8MBps. It uses Broadcom's proprietary M-Stream and single-antenna interference cancellation signal-processing technologies, designed to improve cellphone reception and voice quality.

The device extends the company's range of single-chip baseband processors for cellphone made in 65nm CMOS. The first members of the series were announced earlier this year at the 3GSM Congress in Barcelona.

The series includes the BCM21331 Edge processor (from the Venus project), which is being used by Nokia in certain handsets, and the 2153 HSDPA+Edge transceiver.

- John Walko
EE Times Europe

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