BCM43455 Preliminary Data Sheet
Test Mode Support
Test Mode Support
The BCM43455 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 BCM43455 also supports enhanced testing features to
simplify RF debugging and 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
•
– 8-bit fixed pattern or PRBS-9
– Enables modulated signal measurements with standard RF test equipment
Bluetooth Power Management Unit
The Bluetooth Power Management Unit (PMU) provides power management features that can be invoked by
either software through power management registers or packet handling in the baseband core.
The power management functions provided by the BCM43455 are:
•
•
•
•
RF Power Management
Host Controller Power Management
“BBC Power Management” on page 43
“FM Over Bluetooth” on page 44
RF Power Management
The BBC generates power-down control signals for the transmit path, receive path, PLL, and power amplifier to
the 2.4 GHz transceiver. The transceiver then processes the power-down functions accordingly.
Host Controller Power Management
When running in UART mode, the BCM43455 may be configured so that dedicated signals are used for power
management hand-shaking between the BCM43455 and the host. The basic power saving functions supported
by those hand-shaking signals include the standard Bluetooth defined power savings modes and standby
modes of operation. Table 4 on page 41 describes the power-control handshake signals used with the UART
interface.
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 40
BROADCOM CONFIDENTIAL
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