BCM88335 Data Sheet
Bluetooth Power Management Unit
These techniques cause distortion and popping in the audio stream. The BCM88335 uses a proprietary
waveform extension algorithm to provide dramatic improvement in the audio quality. Figure 7 and Figure 8 show
audio waveforms with and without Packet Loss Concealment. Broadcom PLC and bit-error correction (BEC)
algorithms also support wideband speech.
Figure 7: CVSD Decoder Output Waveform Without PLC
Packet Loss Causes Ramp-down
Figure 8: CVSD Decoder Output Waveform After Applying PLC
Audio Rate-Matching Algorithms
The BCM88335 has an enhanced rate-matching algorithm that uses interpolation algorithms to reduce audio
stream jitter that may be present when the rate of audio data coming from the host is not the same as the
Bluetooth audio data rates.
Codec Encoding
The BCM88335 can support SBC and mSBC encoding and decoding for wideband speech.
Multiple Simultaneous A2DP Audio Streams
The BCM88335 has the ability to take a single audio stream and output it to multiple Bluetooth devices
simultaneously. This allows a user to share his or her music (or any audio stream) with a friend.
Broadcom®
September 23, 2015 • 88335-DS100-R
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BROADCOM CONFIDENTIAL
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