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A316-Codec-V1 Integrated XU316+Codec Microphone-Specific Module Specification Sheet

A316-Codec-V1 USB Multi-channel Audio Decoder Module

1. Product Introduction

1.1 Product Description

  • A316-Codec-V1 is a module designed specifically for USB microphone applications, integrating the XMOS XU316 processor and 88L21 high-performance audio codec, providing exceptional audio processing performance.
  • The module integrates a high-precision DC-DC power circuit, outputting 3.3V, 1.8V, and 0.9V to power the XU316, requiring only a direct 5V power input externally, greatly simplifying the design complexity of the application baseboard.
  • The module supports both single-ended and differential microphone inputs, and provides stereo audio output, suitable for various audio capture and playback application scenarios.
  • The module is equipped with a 16Mbit Flash storage for storing audio firmware and system configurations, supporting firmware upgrade functionality.
  • It provides a USB 2.0 interface, supporting full-speed and high-speed modes, implementing USB Audio device functionality, compatible with multiple operating systems.

1.2 Product Features

  • USB Interface Features

    • USB 2.0 (Full-speed and High-speed modes)
    • USB Audio Class 1.0/2.0 support
    • USB Firmware Upgrade (DFU) functionality
    • Asynchronous transfer mode, reducing clock jitter

  • Audio Input/Output Capabilities

    • Integrated NAU88L21 high-performance audio codec
    • Supports single-ended and differential microphone inputs
    • Provides high-quality stereo audio output
    • Built-in microphone preamplifier
    • Supports multiple audio interface specifications
    • 48 KHz/24 bit high-quality audio sampling

  • System Compatibility

    • Supports Windows, Linux, Android, macOS, and iOS operating systems
    • Plug and play, no additional drivers needed (UAC 2.0 compatible systems)
    • Applicable to conference systems, gaming headsets, professional recording equipment, and other application scenarios

1.3 Product Block Diagram

A316-Codec-V1 Block Diagram
Figure 1: A316-Codec-V1 System Block Diagram

1.4 Specifications

Specification Item Description
Product Name A316-Codec-V1
Product Description USB Microphone and Audio Input/Output Module
Core Processor XMOS XU316-1024-QF60BC24
Audio Codec NAU88L21 High-Performance Codec
Package Type Compatible with SMT and Pin Header
Environmental Standard Complies with RoHS Directive

1.5 Absolute Electrical Parameters

Parameter Minimum Maximum Unit
Storage Temperature -40 125 ℃
Supply Voltage -0.5 5.5 V
ESD Voltage (Human Model) TAMB-25℃ -2 2 KV
ESD Voltage (Machine Model) TAMB-25℃ -500 500 V

1.6 Normal Operating Conditions

Function Minimum Typical Maximum Unit
Operating Temperature 0 25 70 ℃
Operating Voltage (Module Input) 4.75 5.0 5.25 V

1.7 Operating Current

Operation State Average Peak Unit
Active@5.0V 100 150 mA

2. Pin Definition

2.1 Pin Layout

A316-Codec-V1 Pin Diagram
Figure 2: A316-Codec-V1 Pin Layout Diagram

2.2 Pin Description

Pin Number Name Type Function
1 VBUS P 5V Power Input
2 GND P Module Ground
3 1V8_O O 1.8V Power Output (Debug Only)
4 TDI I XTAG Debug PIN
5 TDO O XTAG Debug PIN
6 RST I System Reset, Active Low (Internal Pull-up)
7 TMS I/O XTAG Debug PIN
8 TCK I XTAG Debug PIN
9 X1D22 I/O Multi-function GPIO
10 3V3_O O 3.3V Power Output (Debug Only)
11 DM I/O USB Data Negative
12 DP I/O USB Data Positive
13 VBUS P 5V Power Input
14 GND P Module Ground
15 GND P Module Ground
16 VBUS P 5V Power Input
17 HP_R O Headphone Right Channel Output
18 HP_L O Headphone Left Channel Output
19 X0D33 I/O Multi-function GPIO
20 X0D32 I/O Multi-function GPIO
21 X0D31 I/O Multi-function GPIO
22 X0D30 I/O Multi-function GPIO
23 X0D43 I/O Multi-function GPIO
24 X0D41 I/O Multi-function GPIO
25 X0D42 I/O Multi-function GPIO
26 MIC_BIAS O Microphone Bias Voltage Output
27 MIC_P I Microphone Positive Input
28 MIC_N I Microphone Negative Input

Note: I/O Type Definitions in Table: I=Input, O=Output, P=Power, I/O=Input/Output

3. Module Dimensions and PCB Package Graphics

3.1 Module Dimensions

PCB Dimensions: 18.0±0.2(L)X35.16±0.2(W)X1.0±0.1(H) mm

3.2 Module Package Diagram

A316-Codec-V1 Package Diagram
Figure 3: A316-Codec-V1 Package Dimension Diagram

4. Typical Application Schematic

A316-Codec-V1 Application Schematic
Figure 4: A316-Codec-V1 Typical Application Schematic

This schematic shows the typical connection method of the A316-Codec-V1 module in a USB microphone application. The module connects to the host device (such as a computer or phone) via the USB interface, enabling bidirectional transmission of digital audio. Externally, only a 5V power input is required, and the DC-DC power management circuit inside the module automatically converts it to the working voltages required by the XU316 and 88L21. The microphone input port supports connecting single-ended or differential microphones, and the stereo output can be connected to headphones. The integrated high-performance codec ensures audio quality while simplifying external circuit design.

5. Product Packaging Information

Tray + Outer Box Packaging

Recommended Reflow Oven Temperature Curve
Figure 5: Recommended Reflow Oven Temperature Curve

6. Revision History

Version Date Description Revised by
V1.0 2025-05-07 Initial Version Release