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title: A316-HF-I2S-V1 USB TO I2S HiFi Audio Converter Evaluation Board Specification
---
# A316-HF-I2S-V1 USB TO I2S HiFi Audio Converter Evaluation Board Specification
--8<-- "common/phaten_xmos_support_img.md"
<div class="result" markdown>
![A316-HF-I2S-V1 USB TO I2S HiFi Audio Converter Evaluation Board](/assets/images/hifi_audio/A316_hf_i2s_v1_v.png "A316-HF-I2S-V1 USB TO I2S HiFi Audio Converter Evaluation Board"){align=right width=150}
## 1. Product Introduction
### 1.1 Product Description
- A316-HF-I2S-V1 is designed based on the A316-Mini--V1 XU316 module, with **DAC removed**, focusing on **USB digital signal reception and conversion**
- A316-HF-I2S-V1 receives 2-channel USB input and outputs via I2S after decoding.
- All pins of XU316 are brought out on the evaluation board, allowing users to perform various development and debugging on XU316.
- A316-HF-I2S-V1 includes 2 low phase noise 45.1584MHz/49.152MHz active crystals
- Combined with different DACs, users can evaluate various USB HiFi applications with this board, suitable for audio device developers and Hi-Fi DIY enthusiasts to build high-fidelity audio decoding systems
</div>
### 1.2 Product Features
- **USB Interface Features**
- USB 2.0 (Full-speed and High-speed)
- USB Audio Class 1.0
- USB Audio Class 2.0
- USB Firmware Upgrade (DFU)
### 1.3 Specifications
| Specification Item | Description
| :------------------------| :----------
| Product Name | A316-HF-I2S-V1
| Product Description | USB TO I2S HiFi Audio Converter Evaluation Board Specification
| Core Chip |[XMOS XU316-1024-QF60B-C24](/assets/download/XMOS-XU316-1024-QF60B-C24.pdf)|
| Clock |48.152MHz/49.152MHz Active Crystal Clock|
| Package Type | Pin Header
| Environmental Statement | All hardware components fully comply with EU RoHS Directive
### 1.4 Absolute Electrical Parameters
| Parameter | Minimum | Maximum | Unit |
|:----------------------------------|:-------:|:-------:|:----:|
| Storage Temperature | -40 | 125 | °C |
| Supply Voltage | -0.5 | 5.63 | V |
| ESD Voltage (Human Model) TAMB-25°C | -2 | 2 | KV |
| ESD Voltage (Machine Model) TAMB-25°C | -500 | 500 | V |
### 1.5 Normal Operating Conditions
| Function | Minimum | Typical | Maximum | Unit |
|:---------------------|:-------:|:-------:|:-------:|:----:|
| Operating Temperature| 0 | - | 70 | °C |
| Operating Voltage | 4.95 | 5.0 | 5.63 | V |
### 1.6 Operating Current
| Operating Status | Average | Peak | Unit |
|:-----------------|:-------:|:----:|:----:|
| Active@5V | 90 | 150 | mA |
## 2. Pin Definitions
### 2.1 Pin Layout
<figure markdown="span">
![A316-HF-I2S-V1 Pin Diagram](/assets/images/hifi_audio/A316_hf_i2s_v1_pcb.png "A316-HF-I2S-V1 Pin Diagram"){width=600}
<figcaption></figcaption>
</figure>
### 2.2 Pin Description
#### Audio Output Interface
| No. | Name | Type | Function |
| :------: | :------: | :------: | :------ |
| 1 | 3.3V | P | Outputs 3.3V high level when USB cable is inserted |
| 2 | XOD00 | I/O | I2C CLK |
| 3 | DATA | I/O | I2S(Master) DATA |
| 4 | BCLK | I/O | I2S(Master) BCLK |
| 5 | LRCK | I/O | I2S(Master) LRCK |
| 6 | MCLK | I/O | I2S(Master) MCLK, 49.152Mhz or 45.1584Mhz |
| 7 | DSDOE | I/O | Outputs 3.3V high level when DSD stream is detected |
| 8 | GND | P | Ground |
| 9 | 3V3 | P | 3.3V power output |
| 10 | 3V3 | P | 3.3V power output |
| 11 | XOD30 | I/O | DAC MUTE, outputs high level during sampling rate change or DSD mode change |
| 12 | X0D11 | I/O | I2C DATA |
| 13 | GND | P | Ground |
| 14 | GND | P | Ground |
| 15 | GND | P| Ground |
| 16 | X1D00 | I/O | Multi-function GPIO |
| 17 | X0D40 | I/O | Multi-function GPIO |
| 18 | X0D41 | I/O | Multi-function GPIO |
| 19 | X0D42 | I/O | Multi-function GPIO |
| 20 | X0D43 | I/O | Multi-function GPIO |
#### Expansion Interface 1
| No. | Name | Type | Function |
| :------: | :------: | :------: | :------ |
| 1 | X1D16 | I/O | Multi-function GPIO |
| 2 | X1D18 | I/O | Multi-function GPIO |
| 3 | X1D22 | I/O | Multi-function GPIO |
| 4 | X0D37 | I/O | Multi-function GPIO |
| 5 | X1D13 | I/O | Multi-function GPIO |
| 6 | X1D17 | I/O | Multi-function GPIO |
| 7 | X1D19 | I/O | Multi-function GPIO |
| 8 | GND | P | Ground |
#### Expansion Interface 2
| No. | Name | Type | Function |
| :------: | :------: | :------: | :------ |
| 1 | X1D11 | I/O | Module clock divider output |
| 2 | X1D09 | I/O | Module clock divider output |
| 3 | X1D34 | I/O | Module clock divider output |
| 4 | MCLK/2 | I/O | MCLK/2 24.576Mhz or 22.5792Mhz|
| 5 | X1D10 | I/O | Module clock divider output |
| 6 | X1D01 | I/O | Module clock divider output |
| 7 | X0D31 | I/O | Module clock divider output |
| 4 | GND | P | Ground |
#### Expansion Interface 3
| No. | Name | Type | Function |
| :------: | :------: | :------: | :------ |
| 1 | GND | P | Module ground |
| 2 | X0D33 | I/O | Multi-function GPIO |
| 3 | X0D32 | I/O | Multi-function GPIO |
| 4 | X0D39 | I/O | Multi-function GPIO |
#### DEBUG Interface
| No. | Name | Type | Function |
| :------: | :------: | :------: | :------ |
| 1 | GND | P | Module ground |
| 2 | 1.8V | P | 1.8V power supply |
| 3 | TCK | I | Test clock |
| 4 | TDO | I/O | Test data output |
| 5 | 0.9V | P | 0.9V power supply |
| 6 | RST | I | Reset signal |
| 7 | TMS | I/O | Test mode selection |
| 8 | TDI | I/O | Test data input |
## 3. Module Dimensions and PCB Package Diagram
### 3.1 Module Dimensions
PCB Dimensions: 68±0.3(L)X31±0.3(W)X1.6±0.1(H)
### 3.2 Module Package Diagram
<figure markdown="span">
![A316-HF-I2S-V1 Package Diagram](/assets/images/hifi_audio/A316_hf_i2s_v1_size.png "A316-HF-I2S-V1 Package Diagram"){width=600}
<figcaption></figcaption>
</figure>
## 4. Product Packaging Information
Tray + Outer Box Packaging
## 5. Recommended Reflow Temperature Profile
<figure markdown="span">
![Recommended Reflow Temperature Profile](/assets/images/hifi_audio/module_smt_temp.png "Recommended Reflow Temperature Profile"){width=500}
<figcaption></figcaption>
</figure>
## 6. Revision History
| Version | Date | Description | Revised by |
|:--------|:-----------|:-----------------------------------|:--------------|
| V1.0 | 2025-05-07 | Initial Release | |
| | | | |