User's Manual

Table Of Contents
Document Number: 002-19043 Rev. PRELIMINARY Page 10 of 33
PRELIMINARY
CYBLE-413136-01
Bluetooth Baseband Core
The Bluetooth Baseband Core (BBC) implements all of the time-critical functions required for high-performance Bluetooth operation.
The BBC manages the buffering, segmentation, and routing of data for all connections. It also buffers data that passes through it,
handles data flow control, schedules TX/RX transactions, monitors Bluetooth slot usage, optimally segments and packages data into
baseband packets, manages connection status indicators, and composes and decodes HCI packets. In addition to these functions, it
independently handles host controller interface (HCI) event types, and HCI command types.
The following transmit and receive functions are also implemented in the BBC hardware to increase reliability and security of the
TX/RX data before sending over the air:
n Symbol timing recovery, data deframing, forward error correction (FEC), header error control (HEC), cyclic redundancy check (CRC),
data decryption, and data dewhitening in the receiver.
n Data framing, FEC generation, HEC generation, CRC generation, key generation, data encryption, and data whitening in the
transmitter.
Bluetooth Low Energy
The CYBLE-413136-01 supports single-mode Bluetooth LE operation. The CYBLE-413136-01 supports all Bluetooth 4.2 and legacy
LE features, with the following benefits:
n LE data packet length extension
n LE secure connections
n Link layer privacy
n Enables Bluetooth Smart sensors to access the Internet directly via IPv6/6LoWPAN
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.
n Major states:
p Standby
p Connection