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Table of Contents

BCM20705 Data Sheet

Broadcom

Bluetooth Transceiver and Baseband Processor

November 13, 2014 • MCS20705-DS104-R

Page 3

BROADCOM CONFIDENTIAL

Table of Contents

About This Document

.................................................................................................................................. 8

Purpose and Audience............................................................................................................................ 8

Acronyms and Abbreviations................................................................................................................... 8

Document Conventions ........................................................................................................................... 8

Technical Support

........................................................................................................................................ 8

Section 1: Overview ............................................................................................................ 9

Major Features

.............................................................................................................................................. 9

Block Diagram

............................................................................................................................................ 11

Usage Model

............................................................................................................................................... 12

PC Product Usage Model...................................................................................................................... 12

Section 2: Integrated Radio Transceiver......................................................................... 13

Transmitter Path

......................................................................................................................................... 13

Digital Modulator ................................................................................................................................... 13

Power Amplifier ..................................................................................................................................... 13

Receiver Path

.............................................................................................................................................. 14

Digital Demodulator and Bit Synchronizer............................................................................................. 14

Receiver Signal Strength Indicator........................................................................................................ 14

Local Oscillator Generation

....................................................................................................................... 14

Calibration

................................................................................................................................................... 14

Internal LDO

................................................................................................................................................ 15

Section 3: Bluetooth Baseband Core .............................................................................. 16

Transmit and Receive Functions

.............................................................................................................. 16

Bluetooth 4.1 + EDR Features

................................................................................................................... 17

Frequency Hopping Generator

.................................................................................................................. 17

Link Control Layer

...................................................................................................................................... 17

Test Mode Support

..................................................................................................................................... 18

Power Management Unit

............................................................................................................................ 19

RF Power Management ........................................................................................................................ 19

Host Controller Power Management ..................................................................................................... 19

BBC Power Management...................................................................................................................... 21

Backdrive Protection ...................................................................................................................... 21

Adaptive Frequency Hopping

.................................................................................................................... 22

Collaborative Coexistence

......................................................................................................................... 22

Serial Enhanced Coexistence Interface

................................................................................................... 22

SECI Advantages .................................................................................................................................. 23

SECI I/O ................................................................................................................................................ 23

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