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Ericsson controller speeds development of Bluetooth devices

Posted: 03 Jan 2002 ?? ?Print Version ?Bookmark and Share

Keywords:ericsson? ericsson microelectronics? baseband controller? bluetooth? bluetooth 1.1?

Pre-qualified to Bluetooth version 1.1, the PBM 990 90 baseband controller enables the quick development of Bluetooth products including mobile phones, PDAs and accessories. It offers design flexibility with comprehensive I/O, 64KB on-chip RAM, a flexible external bus interface, variable input frequency and integral data security.

The controller is based on a scalable Ericsson Bluetooth 1.1 compliant core combined with an ARM7 TDMI processor and an AMBA bus. It supports up to seven slaves, making it suitable for both point-to-point and point-to-multipoint applications. The flexible external bus interface allows the system to be easily extended by the addition of peripheral devices and a variety of memory types.

HCI connectivity is provided through UARTs or a USB port. One UART supports HCI connectivity up to 921Kbps while a second can be used at up to 230Kbps for production and debugging purposes. The USB port is a self-powered, USB 2.0 compliant, full-speed device interface. Optional connectivity can be provided by up to 10 GPIO ports. An I2C interface can be used to communicate with devices such as PCM codecs or EEPROMs. Also, a PCM interface is available for voice applications.

The on-chip RAM enables target applications to be embedded within the controller, reducing system cost, size and component count. The controller can adapt to several input clock frequencies. The internal system clock can be configured to the optimal frequency for the target application. Security has likewise been addressed; support for high-level encryption via ciphering keys up to 128 bits is available. The chip supports park, sniff and hold connectivity modes, as well as system power management, maximizing operating time in battery-powered applications.

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