AT76C551

Features:

• Implements Bluetooth™ Specification on Short Distance Wireless Communication in 2.4 GHz ISM Band
• Provides 1 Mbps Aggregate Bit Rate
• Supports Frequency Hopping Spread Spectrum Physical-layer Interface to Dedicated  Transceiver with Frequency Hopping Algorithm Implemented in Hardware
• Provides Baseband Functions in Hardware which Implement Bluetooth Low-level Bit Processing Such as Forward Error Correction (FEC), Header Error Check (HEC) and RC Generation/Checking and Encryption/Decryption
• Integrated ARM7TDMI^® RISC Processor
• Glueless SRAM Interface, Supporting Up to 256K Bytes of Memory
• Glueless Flash Memory Interface, Supporting Up to 256K Bytes of Nonvolatile Memory
• Glueless PCMCIA Bus Interface Conforming to PC Card Standard Feb. 1995
• USB Interface Conforming to Universal Serial Bus Standard Version 1.1
• 16550 UART Core Offering 32-byte Receive FIFO and Programmable Baud Rate
• Programmable 8/16-bit Wide External Memory Interface
• Supports Multiple Reference Clock Frequencies (13.000, 14.400, 16.800, 19.440 MHz)
• 176-lead LQFP
• 3.3V Supply



Application

AT76C551 can be used in applications where fast short range communication is required between portable devices such as mobile phones and digital peripherals.
Typical usages would include:
• Wireless network cards
• Mobile phones
• Laptop and desktop computers
• Pagers
• Digital cameras
• PDAs
• Wireless computer peripherals (printers, etc.)


Pinout




Specifications

Symbol	Parameter	Conditions	Min	Max	Unit
VDD3	DC Supply Voltage	Core and Standard I/Os	-0.3	3.6	V
VI	DC Input Voltage		-0.3	VDD+0.3	V
VO	DC Output Voltage		-0.3	VDD+0.3	V
TEMP	Operating Free Air Temperature Range	Industrial	-40	+85	°C
TSG	Storage Temperature		-60	+150	°C

Description

The T76C551 is a single chip controller providing the functionality for high data rate, short distance wireless communications in the free ISM band. In conjunction with a 2.4 GHz transceiver,it provides a cost effective networking solution for a wide range of digital cmunication devices and computer peripherals. Integration is simplified due to the incorporation of three different interfaces: USB and 16550 UART compatible interfaces and a PCMCIA interface conforming to the PC Card 95 specification. Additionally, a voice coding/decoding module is provided.

The AT76C551 is comprised of a baseband processor. This processor carries out all bit-level rocessing after modulation/demodulation of the Bluetooth bitstream. It controls the transceiver and edicated voice codingdecoding. The AT76C 551 has an ARM7TDMI processor core with support for internal and external memory, as well as the interface core logic.

The powerful RISC processor in the AT76C551 carries out all but the low level baseband functions.