PRELIMINARY
CYW20710
3. Bluetooth Baseband Core
The Bluetooth Baseband Core (BBC) implements the time critical functions required for high-performance Bluetooth operation. The
BBC manages buffering, segmentation, and data routing for all connections. It also buffers data that passes through it, handles data
flow control, schedules SCO/ACL 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 HCI event types and HCI command types.
3.1 Transmit and Receive Functions
The following transmit and receive functions are implemented in the BBC hardware to increase the reliability and security of the Tx/
Rx data before sending the data over the air:
In the transmitter:
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Data framing
Forward Error Correction (FEC) generation
Header Error Control (HEC) generation
Cyclic Redundancy Check (CRC) generation
Key generation
Data encryption
Data whitening
In the receiver:
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Symbol timing recovery
Data deframing
FEC
HEC
CRC
Data decryption
Data dewhitening
3.2 Bluetooth 4.0 + EDR Features
The CYW20710 supports Bluetooth 4.0 + EDR, including the following options:
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A whitelist size of 25
Enhanced Power Control
HCI Read Encryption Key Size command
The CYW20710 provides full support for Bluetooth 2.1 + EDR additional features:
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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)
Document No. 002-14804 Rev. *H
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