BCM43455 Preliminary Data Sheet
Bluetooth 4.1 Features
Bluetooth 4.1 Features
The BBC supports all Bluetooth 4.1 features, with the following benefits:
•
•
•
•
•
•
Dual-mode classic Bluetooth and classic low energy (BT and BLE) operation
Low-energy physical layer
Low-energy link layer
Enhancements to HCI for low energy
Low-energy direct test mode
128 AES-CCM secure connection for both BT and BLE
Note: The BCM43455 is compatible with the Bluetooth Low Energy operating mode, which provides
a dramatic reduction in the power consumption of the Bluetooth radio and baseband. The primary
application for this mode is to provide support for low data rate devices, such as sensors and remote
controls.
Bluetooth Low Energy
The BCM43455 supports the Bluetooth Low Energy operating mode.
Link Control Layer
The link control layer is part of the Bluetooth link control functions that are 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. Each task performs a different state in the Bluetooth Link Controller.
•
Major states:
– Standby
– Connection
Substates:
– Page
•
– Page Scan
– Inquiry
– Inquiry Scan
– Sniff
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 39
BROADCOM CONFIDENTIAL
CYPRESS [ CYPRESS ]
