BCM43455 Preliminary Data Sheet
Table of Contents
Table of Contents
About This Document ................................................................................................................................ 17
Purpose and Audience.......................................................................................................................... 17
Acronyms and Abbreviations................................................................................................................. 17
Document Conventions......................................................................................................................... 17
References............................................................................................................................................ 17
Technical Support ...................................................................................................................................... 18
Section 1: BCM43455 Overview ....................................................................................... 19
Overview...................................................................................................................................................... 19
Standards Compliance...............................................................................................................................21
Mobile Phone Usage Model....................................................................................................................... 22
Section 2: Power Supplies and Power Management ..................................................... 23
Power Supply Topology............................................................................................................................. 23
BCM43455 PMU Features .......................................................................................................................... 23
WLAN Power Management........................................................................................................................ 26
PMU Sequencing ........................................................................................................................................ 26
Power-Off Shutdown.................................................................................................................................. 27
Power-Up/Power-Down/Reset Circuits..................................................................................................... 28
Section 3: Frequency References.................................................................................... 29
Crystal Interface and Clock Generation ................................................................................................... 29
External Frequency Reference.................................................................................................................. 30
Frequency Selection .................................................................................................................................. 32
External 32.768 kHz Low-Power Oscillator .............................................................................................. 33
Section 4: Bluetooth and FM Subsystem Overview....................................................... 34
Features....................................................................................................................................................... 34
Bluetooth Radio.......................................................................................................................................... 36
Transmit ................................................................................................................................................ 36
Digital Modulator ................................................................................................................................... 36
Digital Demodulator and Bit Synchronizer............................................................................................. 36
Power Amplifier..................................................................................................................................... 36
Receiver................................................................................................................................................ 37
Digital Demodulator and Bit Synchronizer............................................................................................. 37
Receiver Signal Strength Indicator........................................................................................................ 37
Local Oscillator Generation................................................................................................................... 37
Calibration ............................................................................................................................................. 37
Section 5: Bluetooth Baseband Core .............................................................................. 38
Bluetooth 4.0 Features...............................................................................................................................38
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 7
BROADCOM CONFIDENTIAL
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