CSR8670C-ICXT-S

Overview

The Qualcomm CSR8670C-ICXT-S is an audio system-on-chip (SoC) designed for wireless connectivity and embedded flash memory. It integrates a Bluetooth radio, application processor, Kalimba DSP, and capacitive touch sensors into a single package to reduce system complexity. The device supports high-quality audio codecs including aptX, AAC, MP3, and SBC. It features an 80MHz programmable Kalimba DSP with integrated multipoint A2DP and HFP applications. The SoC includes stereo ADC and DAC capabilities, supporting up to six digital microphones and two-mic cVc voice processing.

Feature Summary

• Integrates application processor, Bluetooth radio, Kalimba DSP, and embedded flash memory into a single chip to minimize design complexity.
• Supports high-fidelity wireless audio transmission through aptX technology and multiple standard codecs.
• Includes integrated capacitive touch sensor interface for intuitive user interaction without external components.
• Features stereo analog-to-digital and digital-to-analog converters with support for multiple microphone inputs.

Applications

• Home entertainment systems requiring wireless audio streaming
• Wearable audio devices such as smartwatches and fitness trackers
• Bluetooth headphones and earbuds with touch control interfaces
• Smart speakers with integrated voice processing capabilities

Procurement Notes

Verify the specific suffix ICXT-S against official Qualcomm documentation to confirm pinout compatibility and package type before integration. Ensure firmware sources are obtained directly from authorized channels to maintain security compliance. Cross-reference the part number with current datasheets to validate any revisions or updates that may affect electrical characteristics or software compatibility.

Selection Notes

Select this component when a compact solution combining audio processing, wireless connectivity, and touch input is required. The integrated Kalimba DSP offers efficient handling of complex audio algorithms. Consider the embedded flash capability if external memory storage is undesirable. Evaluate the 80MHz processing speed against specific real-time audio processing requirements.

Part Context

The CSR8670 series represents Qualcomm's advanced audio SoC line, succeeding earlier generations like the CSR8645. It is engineered for premium consumer electronics where space constraints and feature density are critical. The C variant typically denotes specific packaging or performance optimizations within the broader family.

Replacement Considerations

Qualcomm indicates that newer designs should consider the Snapdragon Sound Platform. Verify functional equivalence regarding codec support and DSP capabilities if migrating from legacy parts.

FAQ

Does the CSR8670C support multipoint connection?

Yes, the integrated Kalimba DSP supports multipoint A2DP and HFP audio applications, allowing connections to multiple devices.

What audio codecs are supported by this SoC?

The device supports aptX, aptX Low Latency, MP3, AAC, and SBC audio codecs for versatile wireless audio transmission.