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5.3 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 acti-
vated 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
❐
5.4 Test Mode Support
The CYW43353 fully supports Bluetooth Test mode as described in Part I:1 of the Specification of the Bluetooth System Version 3.0.
This includes the transmitter tests, normal and delayed loopback tests, and reduced hopping sequence.
In addition to the standard Bluetooth Test Mode, the CYW43353 also supports enhanced testing features to simplify RF debugging,
qualification, and type-approval testing. These features include:
Fixed-frequency carrier-wave (unmodulated) transmission
■
Simplifies some type-approval measurements (Japan)
❐
Aids in transmitter performance analysis
❐
Fixed-frequency constant-receiver mode
■
Receiver output directed to I/O pin
❐
Allows for direct BER measurements using standard RF test equipment
❐
Facilitates spurious emissions testing for receive mode
❐
Fixed frequency constant transmission
■
Eight-bit fixed pattern or PRBS-9
❐
Enables modulated signal measurements with standard RF test equipment
❐
Document Number: 002-14949 Rev. *G
PRELIMINARY
CYW43353
Page 22 of 113
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