GM68311_VC1¶
48KHz Low-Latency Virtual 7.1 and AI Noise Reduction USB Gaming Audio Processor with FPS Enhancement and Bi-directional 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 functionality, while also supporting I²S input to USB output bi-directional transmission to meet gaming audio playback and 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 synthesizes 7.1 channels into 2-channel output through human-ear-optimized algorithms, allowing users to experience full surround sound effects and sound localization 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 directionality
- Enhanced key sound effects such as footsteps and gunshots
- Improves competitive gaming performance
- SA Virtual 7.1 Algorithm
- Converts 7.1 channels to 2-channel output through specialized algorithms
- Optimized for human hearing, providing 360-degree surround sound and sound localization effects
- AI DNR Deep Learning Noise Reduction Technology
- Noise elimination model based on deep learning
- Effectively filters conventional background noise
- Intelligently identifies and eliminates sudden noises such as keyboard typing and mouse clicks
- Particularly suitable for gaming communication scenarios
Audio Performance Features
- Supports 48kHz/16bit PCM format, optimized for gaming scenarios
- Supports bi-directional 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 (bi-directional 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, iOS, and gaming consoles such as PS5, SWITCH
Codec Support
- Supports TLV320AIC3204
1.3 Application Scenarios¶
- Gaming Headset
- Gaming Microphone
- Gaming Sound Card
- Esports Audio Equipment
1.4 Product Functional Block Diagram¶
1.5 Ordering Information¶
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Comments |
|---|---|---|---|---|
| GM68311_VC1 | GM68311-VC1 | SMT LGA-52 | 13x13mm | 8KHz Low-Latency Virtual 7.1 and AI Noise Reduction USB Gaming Audio Processor with FPS Enhancement and Bi-directional 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 mode switching buttons. The system supports independent control of sound effect modes and noise reduction modes, with both functions capable of being enabled simultaneously to provide the optimal gaming audio experience.
- Sound Effect Mode Control (Mode Switch Button Single Press Operation)
When the mode switch button is pressed once, the system cycles through three sound effect modes, switching to the next mode with each button press.
| Mode Number | Sound Effect Mode Name | Function Description |
|---|---|---|
| 1 | No Sound Effect Mode | Audio signal does not undergo any sound effect processing, maintains original audio output |
| 2 | FPS Mode | Enables FPS gaming enhancement algorithm, enhances key sound effects such as footsteps and gunshots, improves spatial directionality |
| 3 | Virtual 7.1 Mode | Enables SA Virtual 7.1 algorithm, converts 7.1 channel audio to 2-channel output, provides 360-degree surround sound and sound localization effects |
- Noise Reduction Mode Control (Mode Switch Button Long Press Operation)
When the mode switch button is long pressed, the system cycles between two noise reduction modes.
| Mode Number | Noise Reduction Mode Name | Function Description |
|---|---|---|
| 1 | No Noise Reduction | Disables AI noise reduction function, maintains microphone original input signal |
| 2 | AI DNR Noise Reduction | Enables AI deep learning noise reduction technology, intelligently eliminates sudden noises such as keyboard and mouse, preserves clear human voice |
- Mode Combination Description
Sound effect modes and noise reduction modes can be enabled simultaneously, providing users with 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 microphone communication clarity.
2.2 Supported Audio Formats and Sampling Rates:¶
| Audio Format | Supported Sampling Rates | Bit Depth |
|---|---|---|
| PCM | 48kHz | 16bit |
2.3 AI DNR Noise Reduction Parameters:¶
- Latency: 50ms
- Maximum Noise Reduction Intensity: 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, connect to CODEC I2S_SCL |
| 13 | X0D38 | I/O | I2C_SDA, connect 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, connect 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, connect to CODEC I2S_DIN |
| 31 | X1D01 | O | I2S_LRCK, connect to CODEC LRCK |
| 32 | GND | P | Module ground |
| 33 | X1D09 | I/O | NC |
| 34 | X1D10 | O | I2S_BCLK, I2S Master mode output, connect to CODEC BLCK |
| 35 | X1D11 | O | MCLK_OUT, clock master output, connect 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 Description
I/O type definitions in the table: I=Input, O=Output, P=Power, I/O=Input/Output
4. Hardware Parameters¶
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 | Modifier |
|---|---|---|---|
| V1.0 | 2025-06-23 | Initial version release | |