PRELIMINARY
CYW20710
3.3 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.
3.4 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, Park, Sniff Subrate, and Hold.
3.5 Test Mode Support
The CYW20710 fully supports Bluetooth Test Mode, including the transmitter tests, normal and delayed Loopback tests, and the
reduced hopping sequence.
In addition to the standard Bluetooth Test mode, the device supports enhanced testing features to simplify RF debugging and quali-
fication and type approval testing.
These test features include:
■
Fixed frequency carrier wave (unmodulated) transmission
❐
❐
Simplifies some type approval measurements (Japan)
Aids in transmitter performance analysis
■
Fixed frequency constant receiver mode
❐
❐
❐
Directs receiver output to I/O pin
Allows for direct BER measurements using standard RF test equipment
Facilitates spurious emissions testing for receive mode
■
■
Fixed frequency constant bit stream transmission
❐
❐
Unmodulated, 8-bit fixed pattern, PRBS-9, or PRBS-15
Enables modulated signal measurements with standard RF test equipment
Packetized connectionless transmitter test
❐
❐
❐
Hopping or fixed frequency
Multiple packet types supported
Multiple data patterns supported
■
Packetized connectionless receiver test
❐
❐
❐
Fixed frequency
Multiple packet types supported
Multiple data patterns supported
Document No. 002-14804 Rev. *H
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