GM68311_VC1¶
48KHz Low-Latency Virtual 7.1 and AI Noise Reduction USB Gaming Audio Processor with Integrated FPS Enhancement and Bidirectional I²S Interface
1. Introduction¶
1.1 Product Description¶
GM68311 is a gaming sound card optimized for gaming audio processing, developed based on the A316-Mini-V1 module. It supports PCM 48KHz/16bit format and provides an immersive audio experience for gamers.
GM68311_VC1 supports USB Audio Class 1.0/2.0 interface, providing USB input to I²S output transmission, while also supporting bidirectional transmission from I²S input to USB output to meet gaming audio playback and voice communication requirements.
GM68311_VC1 features advanced AI DNR deep learning noise reduction technology with 50ms low latency, perfectly eliminating keyboard, mouse, and various other non-stationary noises while preserving only human voice, making it particularly suitable for gaming scenarios.
GM68311_VC1 incorporates SA virtual 7.1 algorithm that converts 7.1 channel audio through human ear-optimized algorithms into 2-channel output, allowing users to experience full surround sound effects and accurate sound positioning through headphones.
1.2 Product Features¶
Gaming Audio Enhancement Features
- FPS Gaming Enhancement Mode
- Optimized specifically for first-person shooter games
- Provides more precise spatial directional awareness
- Enhances critical sound effects such as footsteps and gunshots
- Improves competitive gaming performance
- SA Virtual 7.1 Algorithm
- Converts 7.1 channel audio to 2-channel output through specialized algorithms
- Optimized for human ear, providing 360-degree full surround sound and accurate sound positioning
- AI DNR Deep Learning Noise Reduction Technology
- Deep learning-based noise cancellation model
- Effectively filters out conventional background noise
- Intelligently identifies and eliminates sudden noises such as keyboard typing and mouse clicking
- Particularly suitable for gaming voice communication scenarios
Audio Performance Features
- Supports 48kHz/16bit PCM format, optimized for gaming scenarios
- Supports bidirectional audio transmission (playback and recording)
- Low-latency audio processing ensures smooth gaming experience
Interface Support Features
-
Multiple Digital Interface Support
- Supports USB audio input
- Supports I²S master mode audio output
- Supports I²S master mode audio input to USB output (bidirectional transmission)
- Supports button and LED control
-
USB Interface Features
- Supports UAC 1.0
- Supports firmware upgrade via USB
System Compatibility
- UAC 1.0 protocol
- Supports multiple operating systems including Windows, Linux, Android, macOS, and iOS, as well as gaming consoles such as PS5 and SWITCH
Codec Support
- Supports TLV320AIC3204
1.3 Application Scenarios¶
- Gaming Headset
- Gaming Microphone
- Gaming Sound Card
- Esports Audio Equipment
1.4 Product Function Block Diagram¶
1.5 Ordering Information¶
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Comments |
|---|---|---|---|---|
| GM68311_VC1 | GM68311-VC1 | SMT LGA-52 | 13x13mm | 48KHz Low-Latency Virtual 7.1 and AI Noise Reduction USB Gaming Audio Processor with Integrated FPS Enhancement and Bidirectional I²S Interface |
2. Modes and Performance Specifications¶
2.1 Supported Function Modes¶
GM68311_VC1 supports multiple audio processing function modes. Users can flexibly configure sound effect processing and noise reduction functions through the mode switching button. The system supports independent control of sound effect mode and noise reduction mode, and both functions can be enabled simultaneously to provide the best gaming audio experience.
- Sound Effect Mode Control (Single Press Mode Switch Button)
When the mode switch button is pressed once, the system cycles through three sound effect modes, switching to the next mode with each press.
| Mode Number | Sound Effect Mode | Function Description |
|---|---|---|
| 1 | No Sound Effect Mode | Audio signal bypasses any sound effect processing, maintaining original audio output |
| 2 | FPS Mode | Enables FPS gaming enhancement algorithm, enhances critical sound effects such as footsteps and gunshots, improves spatial directional awareness |
| 3 | Virtual 7.1 Mode | Enables SA virtual 7.1 algorithm, converts 7.1 channel audio to 2-channel output, provides 360-degree full surround sound and accurate sound positioning |
- Noise Reduction Mode Control (Long Press Mode Switch Button)
When the mode switch button is long-pressed, the system cycles between two noise reduction modes.
| Mode Number | Noise Reduction Mode | Function Description |
|---|---|---|
| 1 | No Noise Reduction | AI noise reduction function disabled, maintains original microphone input signal |
| 2 | AI DNR Noise Reduction | Enables AI deep learning noise reduction technology, intelligently eliminates sudden noises such as keyboard and mouse clicks, preserves clear voice |
- Mode Combination Description
Sound effect mode and noise reduction mode can be enabled simultaneously to provide a complete gaming audio solution. For example, users can enable both Virtual 7.1 mode and AI DNR noise reduction function simultaneously, enjoying immersive surround sound effects while ensuring clear microphone communication.
2.2 Supported Audio Formats and Sample Rates¶
| Audio Format | Supported Sample Rate | Bit Depth |
|---|---|---|
| PCM | 48kHz | 16bit |
2.3 AI DNR Noise Reduction Parameters¶
- Latency: 50ms
- Maximum Noise Reduction: 35dB
2.4 Supported Codec¶
- TLV320AIC3204
3. Pin Configuration and Functions¶
3.1 GM68311_VC1 Pin Layout¶
3.2 GM68311_VC1 Pin Description¶
| Pin Number | Name | Type | Function |
|---|---|---|---|
| 1 | 3.3V | P | Module 3.3V power supply |
| 2 | X1D13 | I | Sound effect mode switch button input, active low |
| 3 | X1D16 | I | Virtual 7.1 mode LED indicator, active low |
| 4 | GND | P | Module ground |
| 5 | X1D17 | I | AI DNR LED indicator, active low |
| 6 | X1D18 | I/O | NC |
| 7 | X1D19 | I/O | NC |
| 8 | X1D22 | I | FPS mode LED indicator, active low |
| 9 | X0D29 | I | MIC_VOL-, microphone volume decrease, active low |
| 10 | X0D35 | I/O | NC |
| 11 | X0D36 | I/O | NC |
| 12 | X0D37 | I/O | I2C_SCL, connects to CODEC I2S_SCL |
| 13 | X0D38 | I/O | I2C_SDA, connects to CODEC I2S_SDA |
| 14 | X0D40 | O | CODEC_RST, active low |
| 15 | X0D39 | I/O | NC |
| 16 | X0D42 | I/O | NC |
| 17 | X0D41 | I/O | NC |
| 18 | X0D43 | I/O | Independent headphone amplifier MUTE output, active low |
| 19 | X1D34 | O | I2S_DOUT, connects to CODEC I2S_DOUT |
| 20 | GND | P | Module ground |
| 21 | X0D30 | I | MUTE, MIC mute button input, active low |
| 22 | X0D31 | I | MIC_VOL+, microphone volume increase, active low |
| 23 | X0D32 | I | Headphone_VOL-, playback volume decrease, active low |
| 24 | X0D33 | I | Headphone_VOL+, playback volume increase, active low |
| 25 | GND | P | Module ground |
| 26 | GND | P | Module ground |
| 27 | GND | P | Module ground |
| 28 | X0D00 | I/O | NC |
| 29 | X0D11 | I | MCLK_IN, input |
| 30 | X1D00 | I | I2S_DIN, connects to CODEC I2S_DIN |
| 31 | X1D01 | O | I2S_LRCK, connects to CODEC LRCK |
| 32 | GND | P | Module ground |
| 33 | X1D09 | I/O | NC |
| 34 | X1D10 | O | I2S_BCLK, I2S master mode output, connects to CODEC BLCK |
| 35 | X1D11 | O | MCLK_OUT, master clock output, connects to MCLK_IN and CODEC MCLK |
| 36 | GND | P | Module ground |
| 37 | GND | P | Module ground |
| 38 | TDI | I/O | XTAG debug PIN |
| 39 | TDO | I/O | XTAG debug PIN |
| 40 | TMS | I/O | XTAG debug PIN |
| 41 | TCK | I/O | XTAG debug PIN |
| 42 | RST_N | I/O | System reset, active low |
| 43 | 1.8V | P | Module 1.8V power supply |
| 44 | GND | P | Module ground |
| 45 | USB_DM | I/O | USB_DM |
| 46 | USB_DP | I/O | USB_DP |
| 47 | GND | P | Module ground |
| 48 | 0.9V | P | Module 0.9V power supply |
| 49 | GND | P | Module ground |
| 50 | GND | P | Module ground |
| 51 | GND | P | Module ground |
| 52 | GND | P | Module ground |
Pin Type Definitions
I/O type definitions in the table: I=Input, O=Output, P=Power, I/O=Input/Output
4. Hardware Specifications¶
4.1 Normal Operating Conditions¶
| Function | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Operating Temperature | 0 | - | 70 | ℃ |
| 3.3V Operating Voltage | 3.0 | 3.3 | 3.6 | V |
| 1.8V Operating Voltage | 1.62 | 1.80 | 1.98 | V |
| 0.9V Operating Voltage | 0.855 | 0.90 | 0.945 | V |
4.2 Product Dimensions¶
13±0.1mm(L)X13±0.1mm(W)X0.8±0.1mm(H)
4.3 Module Package Diagram¶
5. Product Packaging Information¶
Tray + Outer Box Packaging
6. Revision History¶
| Version | Date | Description | Revised By |
|---|---|---|---|
| V1.0 | 2025-06-23 | Initial release | |