CP2114-B01-GMR

Controllers Overview

The CP2114-B01-GMR is a single-chip USB Audio to I2S Digital Audio Bridge manufactured by Silicon Labs. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and one-time programmable ROM within a 32-pin QFN (5x5 mm) package. The device supports USB Audio Class v1.0, providing I2S master mode with 48 kHz, 16-bit stereo digital audio output. It features an on-chip voltage regulator producing a 3.45 V output and operates on a digital supply voltage of 3.0 to 3.6 V. The component includes 12 configurable GPIO pins and supports UART auxiliary communication via USB HID.

Controllers Feature Summary

• Integrates USB 2.0 full-speed controller and transceiver without requiring external resistors or crystals
• Provides out-of-box support for commercial DACs through pre-configured I2C initialization strings stored in OTP ROM
• Supports USB HID Consumer Controls for synchronized volume and mute functionality
• Includes a UART interface accessible via standard USB HID class without custom drivers

Controllers Applications

• USB-to-I2S digital audio bridge implementations
• Embedded systems requiring USB audio playback and recording capabilities
• Dongles or appliances integrating USB digital audio interfaces

Controllers Procurement Notes

Verify the specific suffix 'GMR' indicates tape-and-reel packaging, distinct from the tube-packaged 'GM' variant. Confirm current availability status as distribution listings may indicate end-of-life conditions. Ensure compatibility with target operating systems including Windows, Linux, Mac OS-X, and iOS via appropriate camera kit connectors.

Controllers Selection Notes

Select this component when a turn-key solution for USB audio to I2S conversion is required. It eliminates the need for complex USB protocol programming and custom driver development. Consider the integrated oscillator and voltage regulator to simplify board design. Verify that the target DAC supports the 48 kHz sample rate and 16-bit resolution native to the device.

Controllers Part Context

The CP2114 belongs to the Silicon Labs USBXpress family of interface controllers. This specific model focuses on digital audio bridging rather than general-purpose UART or GPIO expansion found in other series members like the CP2110. It serves as a specialized bridge between host USB systems and I2S-connected codecs or DACs.

Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The datasheet references evaluation kits such as CP2114-CS42L55EK and CP2114-WM8523EK but does not list direct cross-references for replacement components.