Qualcomm® QCC30xx
Bluetooth Audio SoCs
Series
Extremely low-power Bluetooth audio SoCs
optimized for compact, feature-rich wireless
earbuds, hearables and speakers.
The QCC302x/QCC303x/QCC304x SoC series
is a family of flash programmable Bluetooth®
audio System-on-Chips (SoCs) based on an
ultra-low power architecture. This series is
designed to meet consumer demand for robust,
high quality, wireless listening experiences in
smaller devices with low power consumption for
longer audio playback.
These SoCs are engineered for low power
performance. With the latest QCC304x SoCs
power consumption can be reduced by up
to 70% compared to the earlier Qualcomm®
QCC300x and Qualcomm® CSRA63xxx. Power
consumption is optimised for demanding use
cases so as to support longer battery life in
virtually all operating modes.
The flexibility provided by the flash
programmable applications processor and
configurable audio digital signal processors
(DSPs), helps manufacturers to dierentiate
products without extended development cycles.
The QCC304x features ultra-low-power digital
active noise cancelling (ANC) technology
integrated in the SoC, designed to eliminate the
need for an external ANC solution. This feature
can help reduce the complexity, cost and PCB
space needed for adding ANC to earbuds,
hearables, and other portable audio devices.
With Qualcomm TrueWireless™ Stereo
technology, these SoCs are engineered to
deliver robustness and a sophisticated user
experience. The QCC304x features our
Qualcomm TrueWireless Mirroring which
improves robustness even further oering
dynamic bud-to-bud role-swapping with
Bluetooth address handover and also evens out
power distribution between both earbuds.
This material is subject to change without notice.
87-CE930-1 Rev. D
Highlights
Powerful tri-core processing designed
to support flexible innovation
Tri-core processing is delivered by two dedicated
configurable 32-bit application processor subsystems
and a Qualcomm® Kalimba™ DSP audio subsystem. A new
feature-rich audio development kit (ADK) and enhanced
development tools are designed to help reduce time
needed for integration and commercialization.
Ultra-low power
The QCC302x/QCC03x/QCC304x series is designed
for unprecedented eciency in power consumption
compared to our previous technology. These SoCs support
the development of very small form factor, richly-featured
earbuds that can be used for up to 10 hours with a 65mHA
battery.
High quality wireless audio
Qualcomm® aptX™ Audio and aptX HD audio technologies
are designed to deliver consistent, high quality audio
streaming over Bluetooth. The internal 24-bit end-to-end
audio pipeline and high-performance DACs are designed
to deliver high resolution audio through the audio
processing chain.
Qualcomm TrueWireless Mirroring
The QCC304x devices feature Qualcomm TrueWireless
Mirroring, a new topology that combines the best of our
eavesdropping and relay solutions to deliver robustness
while also supporting role-swapping and bud-to-bud
Bluetooth address handover, dynamically and with virtually
no interruption to the audio.
Digital Assistant ready
Support for voice services is available via button-press
activation. This feature is designed to relay the audio
stream and voice control capabilities to a handset to
process and execute commands.
1
1
Batt ery life varies si gnifica ntly with settings, usage, and other factors .
Qualcomm QCC30xx, Qualcomm QCC302x, Qualcomm QCC303x, Qualcomm QCC304x, Qualcomm QCC300x,
Qualcomm CSRA63xxx, Qualcomm Kalimba, Qualcomm aptX and Qualcomm TrueWireless are products of Qualcomm
Technologies, Inc. and/or its subsidiaries.
Bluetooth Audio Applications
• Truly Wireless Earbuds
• Bluetooth Stereo Headphones or Headsets
• Bluetooth Stereo Portable Speakers
Home Entertainment Toys
QCC302x/QCC303x/QCC304x Features Comparison
QCC3026
QCC3020
QCC3024
QCC3034
QCC3040
QCC3046
QCC3021
QCC3031
Stereo
Headset
Qualcomm
TrueWireless
Stereo
✓ ✓ ✓
✓ ✓ ✓ ✓
Qualcomm
TrueWireless
Mirroring
✓
✓
✓ ✓ ✓ ✓ ✓
✓ ✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓ ✓
Features
z
Highly integrated SoC with extremely lowpower design*
z
Support for digital assistants with minimal
integration eort
z
Fully programmable digital ANC
z
Qualcomm TrueWireless Stereo /
Qualcomm TrueWireless Mirroring support
z
Support for aptX and aptX HD audio
z
QCC302x/QCC303x qualified to
Bluetooth 5.1 and QCC304xx qualified to
Bluetooth 5.2 (LE Audio ready)
z
2Mbps Bluetooth low energy (LE) support
z
4mm x 4mm ultra-small form factor
z
Dual core 32-bit processor application and
Kalimba DSP Audio subsystem
z
Embedded ROM + RAM and external
Q-SPI Flash
z
High-performance low power audio codec
z
2-ch 98dBA headset class D
z
2-ch 99dBA line inputs (single-ended)
192kHz 24-bit I2S & SPDIF interfaces
z
Flexible soware platform with powerful
new IDE support
z
Integrated battery charger supporting
* up to 73% improved compared with our CSR867x series
Stereo
Speaker
aptX Audio aptX HD
✓
✓
Qualcomm
Active Noise
Cancellation
Qualcomm
cVc (1-mic)
✓ ✓
✓ ✓
cVc (2-mic)
Qualcomm
Broadcast
Audio
Package
WLCSP 3.98x4.02x0.54mm
BGA 5.5x5.5x0.1mm
BGA 5.5x5.5x0.1mm
BGA 5.5x5.5x0.1mm
BGA 5.5x5.5x0.1mm
WLCSP 4.38x4.26x0.57mm
QFN 8x8x0.85mm
QFN 8x8x0.85mm
QCC302x/QCC303x/QCC304x Block Diagram
Ordering Information
Product Part Number Product Part Number
QCC3020 QCC3020-0-CSP90 QCC3026 QCC3026-0-81WLNSP
QCC3021 QCC3021-0-80PQFN QCC3031 QCC3031-0-80PQFN
QCC3024 QCC3024-0-CSP90 QCC3034 QCC3034-0-CSP90
QCC3040 QCC-3040-0-CSP90B QCC3046 QCC-3046-0-WLNSP94B
Qualcomm QCC3020, Qualcomm QCC3021, Qualcomm QCC3024, Qualcomm QCC3026, Qualcomm QCC3031,
Qualcomm QCC3034, Qualcomm QCC3040 and Qualcomm QCC3046 are products of Qualcomm Technologi es, In c.
and/or its subsidiaries.
©2020 Qualcomm Technologies International, Ltd. All Rights Reserved. Qualcomm and Qualcomm TrueWireless are
trademarks of Qualcomm Incorporated, registered in the United States and other countries. aptX, cVc and Kalimba are
trademarks of Qualcomm Technologies International, Ltd., registered in the United States and other countries. The Bluetooth®
word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Qualcomm
Technologies International, Ltd. is under license. Other products and brand names may be trademarks or registered trademarks
of their respective owners.
0320A
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