BCM20705 Datasheet, PDF (18/67 Pages) Cypress Semiconductor – Single-Chip Bluetooth Transceiver and Baseband Processor

BCM20705 Data Sheet
Bluetooth 4.1 + EDR Features
Bluetooth 4.1 + EDR Features
The BCM20705 supports Bluetooth 4.1 + EDR and Low Energy, including the following options:
• A whitelist size of 25
• Enhanced Power Control
• HCI Read Encryption Key Size command
The BCM20705 provides full support for Bluetooth 2.1 + EDR additional features:
• Secure Simple Pairing (SSP)
• Encryption Pause Resume (EPR)
• Enhance Inquiry Response (EIR)
• Link Supervision Time Out (LSTO)
• Sniff SubRating (SSR)
• Erroneous Data (ED)
• Packet Boundary Flag (PBF)
Frequency Hopping Generator
The frequency hopping sequence generator selects the correct hopping channel number, based on the link
controller state, Bluetooth clock, and device address.
Link Control Layer
The Link Control layer is part of the Bluetooth link control functions implemented in dedicated logic in the Link
Control Unit (LCU). This layer consists of the Command Controller that takes commands from the software and
other controllers that are activated or configured by the Command Controller to perform the link control tasks.
There are two major states–Standby and Connection. Each task establishes a different state in the Bluetooth
Link Controller. In addition, there are eight substates—Page, Page Scan, Inquiry, Inquiry Scan, Sniff, and Sniff
Subrating.
Broadcom®
Bluetooth Transceiver and Baseband Processor
November 13, 2014 • MCS20705-DS104-R
Page 17
BROADCOM CONFIDENTIAL