DataSheet
BCM20705
Single-Chip Bluetooth Transceiver and Baseband Processor
FEATURES
GENERAL DESCRIPTION
The Broadcom® BCM20705 is a monolithic, single-
chip, Bluetooth 4.1 compliant, stand-alone baseband
processor with an integrated 2.4 GHz transceiver.
Manufactured using the industry's most advanced
65 nm CMOS low-power process, the BCM20705
employs the highest level of integration, eliminating
all critical external components, and thereby
• Bluetooth 4.1 + EDR compliant
• Class 1 capable with built-in PA
• Programmable output power control meets Class
1, Class 2, or Class 3 requirements
• Use supply voltages up to 5.5V
• Supports Broadcom SmartAudio™, wide-band
speech, SBC codec, and packet loss
concealment.
minimizing the device’s footprint and costs associated
with the implementation of Bluetooth solutions.
• Fractional-N synthesizer supports frequency
references from 12 MHz to 52 MHz
The BCM20705 is the optimal solution for voice and
data applications that require a Bluetooth SIG
standard Host Controller Interface (HCI) via USB,
UART H4 or H5, and PCM audio interface support.
The BCM20705 radio transceiver’s enhanced radio
performance meets the most stringent industrial
temperature application requirements for compact
integration into mobile handset and portable devices.
The BCM20705 is fully compatible with all standard
TCXO frequencies and provides full radio
• Automatic frequency detection for standard
crystal and TCXO values when an external
32.768 kHz reference clock is provided.
• Ultra-low power consumption
• Supports serial flash interfaces
• Available in a 50-ball FPBGA package.
• ARM7TDMI-S™–based microprocessor with
integrated ROM and RAM
compatibility, enabling it to operate simultaneously
with GPS and cellular radios.
• Supports mobile and PC applications without
external memory
• A USB hub
APPLICATIONS
• Desktop and laptop personal computers
• Computer peripheral devices (PCMCIA cards, CF
cards, and USB dongles)
• Personal digital assistants
• Automotive telematic systems
Figure 1: System Block Diagram
PCM/I2C
USB
BCM20705
UART/SPI
GPIO
High-Speed Peripheral
Transport Unit (PTU)
Radio Transceiver
SPI Master
BSC
TCXO
Microprocessor and
Memory Unit (uPU)
Bluetooth Baseband
Core (BBC)
LPO
MCS20705-DS104-R
November 13, 2014
5300 California Avenue • Irvine, CA 92617 • Phone: 949-926-5000 • Fax: 949-926-5203
CYPRESS [ CYPRESS ]
