Qualcomm® QCS404 Application Processor
Designed specifically for mid-range smart speakers and entry-level soundbar applications with an unparalleled level of integration compared to our previous SoCs and next-generation Voice UI.
The QCS404 System-on-Chip (SoC) is designed to bring a wealth of new capabilities and smart functionality to smart speakers.
QCS404 is part of our Qualcomm® QCS400 series of dedicated audio SoCs based on our high performance, low-power architecture. With on-device dual DSP, AI enhancement and rich connectivity, this advanced SoC is designed to significantly reduce overall BOM for complex, feature rich, voice-supported smart speaker products.
Applications
- • Smart Speakers
- • Smart Soundbars
Features and Benefits
- • Highly integrated architecture, with four CPU cores, dual DSP, Wi-Fi, Bluetooth, and powerful audio features on a single chip
- • Industry-leading connectivity with low-latency streaming and advanced Wi-Fi, Bluetooth, and Zigbee coexistence technology
- • High performance, low-power keyword detection pre-loaded and running on an integrated DSP
- • Configurable multi-keyword detection with Local Automatic Speech Recognition designed for customizable user experiences
- • Compatible with Qualcomm® DDFA™ amplifier technology and Qualcomm® aptX™ audio technology
- • Includes low power far-field keyword detection, multi-mic beamforming noise suppression with mono, stereo, and multichannel echo cancellation
- • Industry-leading far field voice capture technology, with simultaneous multi key word detection
- • Support for up to 12 channel audio output
- • Help to reduced product development time and cost, with our Audio Development Kit (ADK), and Software Evaluation Kit, as well as hardware reference designs
Related Products
Chipsets
Product |
Part Numbers |
| QCS404 |
QCS-404 |
| Power Management Module* |
PMS-405 |
| Charger |
SMB-1355 |
| Connectivity |
WCN-3999 or WCN-3980 |
| Audio Codec (Analog) |
WCD-9335 |
| Audio Speaker |
WSA-8810 or WSA-8815 or CSRA-6620 or CSRA-6640 |
| Location |
NA |
*Required
Please check part number accuracy before ordering.
Additional Notes
| CPU | Quad-core at up to 1.4 GHz |
| DSP | DSP Audio: V66 800 MHz with low power island DSP Compute: V66 700 MHz with Qualcomm® AI Engine DSP Technology: 2x Qualcomm® Hexagon™ DSP |
| Wireless Connectivity | 802.11ax-ready, 802.11ac; 2x2, 1x1, 4x4 MU-MIMO; DBS; Bluetooth 5.1; 802.15.4 Zigbee |
| General Audio | DDFA amplifier technology, Low-latency streaming, aptX Adaptive audio technology |
| Audio Playback | 12 channel output |
| Voice Services | 4-microphone far-field voice pickup noise cancellation, Low-power standby with voice wakeup |
| Security Support | Secure voice |
| Peripherals | PCIe, I2C, Ethernet, SDIO, SPI, UART, USB 2.0, USB 3.0 |
| Software Options | Linux |

| Supplier Unconfirmed | |
| 5A992c. | |
| Active | |
| 8542.31.00.75 | |
| Automotive | Unknown |
| PPAP | Unknown |
| QCS400 | |
| 1400 | |
| 64 | |
| System-On-Chip | |
| Microcontroller | |
| Ethernet/I2C/SPI/UART/USB | |
| 1 | |
| 1 | |
| 0 | |
| 1 | |
| 1 | |
| 0 | |
| 0 | |
| 0 | |
| 1 | |
| No |
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