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---
title: HF83311_VB1/HF83311Q_VB1 768kHz/DSD512 USB Multi-Interface HiFi Audio Decoder
description: HF83311_VB1/HF83311Q_VB1 High-Performance Audio Decoder Technical Document
author: Technical Documentation Dept.
date: 2025-05-07
print_page: true
tags:
- Audio Decoder
- XMOS
- USB HiFi
- MQA
---
--8<-- "common/phaten_xmos_support_img.md"
<div class="grid" markdown>
<div class="card-wide" markdown>
# HF83311_VB1/HF83311Q_VB1
__Multi-Channel PCM 768kHz/DSD512 USB HiFi Decoder Supporting USB Input and I2S/SPDIF Output__
</div>
</div>
## 1. Introduction
### 1.1 Product Description
HF83311_VB1/HF83311Q_VB1 is a USB multi-interface HiFi audio decoder that supports up to PCM 768kHz/DSD512, designed specifically for HiFi audio DAC applications.
HF83311_VB1/HF83311Q_VB1 supports multiple standard audio formats, including USB Audio Class 1.0/2.0, S/PDIF and I²S interfaces. The flexible audio interfaces allow HF83311_VB1/HF83311Q_VB1 to connect to various audio data converters, digital audio receivers and transmitters, as well as digital signal processors.
It is compatible with AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 digital audio interfaces.
HF83311_VB1/HF83311Q_VB1 provides multiple input and output modes, including USB input/I²S output and USB input/S/PDIF output, to meet the requirements of different application scenarios.
!!! warning "Important Note"
**Model HF83311Q_VB1 supports MQA audio decoding, while model HF83311_VB1 does not support this feature.**
### 1.2 Product Features
**Audio Performance Features**
- Supports input and output sample rates up to 768kHz
- Supports DSD64/128/256/512 formats
- **HF83311Q_VB1 supports MQA decoding**
- Built-in SSRC module, supporting sample rate conversion between different interfaces and different sample rates
- SSRC performance: THD+N (@1kHz, 0dBFs) < -130dB, SNR: > 140dB
- Supports 16–32-bit audio data formats
**Interface Support Features**
- **Multiple digital interface support**
- Supports USB audio input
- Supports I²S master mode audio output
- Supports S/PDIF audio output
- Supports UART configuration interface
**USB Function Features**
- **USB interface features**
- Supports UAC 1.0
- Supports UAC 2.0
- Supports firmware upgrade via USB
- Supports HID and can upgrade MCU firmware via HID
**System Compatibility**
- UAC 2.0 protocol, supports ASIO
- Supports multiple operating systems, such as Windows, Linux, Android, macOS and iOS
### 1.3 Application Scenarios
- USB HiFi Decoder
- USB HiFi Audio Interface
- USB HiFi Digital Player
### 1.4 Product Functional Block Diagram
<figure markdown="span">
![HF83311 Block Diagram](/assets/images/hifi_audio/hf83311_diagram.png "HF83311 Block Diagram"){width="600"}
<figcaption>Figure 1: HF83311_VB1/HF83311Q_VB1 Functional Block Diagram</figcaption>
</figure>
### 1.5 Ordering Information
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Hardware Model | Comments |
|:--------|:----------------|:-------------|:-----------|:------------|:------------|
| HF83311_VB1 | HF83311-VB1 | SMT STAMP-30 | 19x26mm | A316-1926-V1 | |
| HF83311Q_VB1 | HF83311Q-VB1 | SMT STAMP-30 | 19x26mm | A316-1926-V1 | **Supports MQA decoding**|
## 2. Modes and Specifications
### 2.1 Supported Input/Output Modes
| Mode No. | Input/Output Mode | Description |
|:--------:|:------------------------|:------------------------|
| 1 | USB(UAC2.0) in-I²S(Master) out | USB input, I²S output, UAC2.0 |
| 2 | USB(UAC1.0) in-I²S(Master) out | USB input, I²S output, UAC1.0 |
| 3 | USB IN(UAC2.0)-SPDIF OUT | USB input, S/PDIF output, UAC2.0 |
### 2.2 Detailed Parameters of Each Operating Mode
#### 2.2.1 USB(UAC2.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz, 705.6kHz, 768kHz |
| **DSD Native** | DSD64, DSD128, DSD256, DSD512 |
| **DOP** | DOP64, DOP128, DOP256 |
| **MQA** | Supported only by HF83311Q_VB1 |
#### 2.2.2 USB(UAC1.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 48kHz |
#### 2.2.3 USB(UAC2.0) in → S/PDIF out Mode
**Input/Output Sample Rate Support:**
| Interface | Audio Format | Supported Sample Rates |
|:-----|:---------|:-------------|
| **USB Input** | PCM | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz |
| **S/PDIF Output** | PCM | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
**SSRC (Sample Rate Conversion) Function:**
* Input sample rate ≤ 192kHz: Output at original sample rate
* Input sample rate > 192kHz: Output at 192kHz after SSRC conversion
**SSRC Performance Specifications:**
* THD+N (@1kHz, 0dBFs): ≤-130dB
* SNR: ≥140dB
#### 2.2.4 USB(UAC1.0) in → S/PDIF out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 48kHz |
## 3. Pin Configuration and Functions
### 3.1 HF83311_VB1/HF83311Q_VB1 Pin Layout
<figure markdown="span">
![HF83311-VB1 Pin Diagram](/assets/images/hifi_audio/a316_1926v1_module_pin_define.png "HF83311-VB1 Pin Diagram"){width=400}
<figcaption>Figure 2: HF83311-VB1 Pin Arrangement Diagram</figcaption>
</figure>
### 3.2 HF83311_VB1/HF83311Q_VB1 Pin Description
| Pin No. | Name | Type | Function |
|:--------:|:----------|:------|:-----------------------------|
| 1 | GND | P | Module ground |
| 2 | 3V3 | P | Module 3.3V power supply |
| 3 | X1D11 | I/O | Connected to Pin 16 MCLK |
| 4 | X1D10 | I/O | NC |
| 5 | X1D09 | I/O | NC |
| 6 | X1D01 | I/O | NC |
| 7 | X1D00 | I/O | NC |
| 8 | X0D11 | I/O | UART_RX, connected to MCU_TX |
| 9 | X0D00 | I/O | UART_TX, connected to MCU_RX |
| 10 | X0D31 | I/O | NC |
| 11 | X0D30 | I/O | CTL_MUTE; control output, active high |
| 12 | X1D34 | I/O | S/PDIF output |
| 13 | X0D43 | I/O | NC |
| 14 | X0D41 | I/O | NC |
| 15 | X0D42 | I/O | NC |
| 16 | MCLK | I/O | Active crystal 49.152/45.1584MHz clock output |
| 17 | X0D40 | I/O | NC |
| 18 | X0D38 | I/O | I²S_OUT_DATA0(Master) |
| 19 | X0D37 | I/O | NC |
| 20 | X0D36 | I/O | I²S_OUT_LRCLK(Master) |
| 21 | X0D35 | I/O | I²S_OUT_BCLK(MASTER) |
| 22 | X0D29 | I/O | NC |
| 23 | X1D22 | I/O | NC |
| 24 | X1D19 | I/O | NC |
| 25 | X1D16 | I/O | NC |
| 26 | USB_DP | I/O | USB data positive |
| 27 | USB_DM | I/O | USB data negative |
| 28 | X1D18 | I/O | NC |
| 29 | X1D17 | I/O | NC |
| 30 | X1D13 | I/O | NC |
!!! info "Pin Type Description"
- In the table, I/O type definitions: I = input, O = output, P = power, I/O = input/output
## 4. Revision History
| Version | Date | Description | Editor |
|:------|:-------------|:---------------------------------------|:-------------|
| V1.0 | 2025-05-07 | Initial version release | |
| | | | |
| | | | |
## 5. Feedback
<details>
<summary>Click to expand feedback form</summary>
--8<-- "common/customer_form.md"
</details>

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---
title: HF83311_VC1/HF83311Q_VC1 768kHz/DSD512 USB Multi-Channel and Multi-Interface HiFi Audio Decoder
description: HF83311_VC1/HF83311Q_VC1 High-Performance Audio Decoder Technical Document
author: Technical Documentation Dept.
date: 2025-05-07
print_page: true
---
--8<-- "common/phaten_xmos_support_img.md"
<div class="grid" markdown>
<div class="card-wide" markdown>
# HF83311_VC1/HF83311Q_VC1
__Multi-Channel PCM 768kHz/DSD512 USB HiFi Decoder Supporting USB Input and I2S/SPDIF Output__
</div>
</div>
## 1. Introduction
### 1.1 Product Description
HF83311_VC1/HF83311Q_VC1 is a USB multi-channel and multi-interface HiFi audio decoder that supports up to PCM 768kHz/DSD512, designed specifically for HiFi audio DAC applications.
HF83311_VC1/HF83311Q_VC1 supports multiple standard audio formats, including USB Audio Class 1.0/2.0, S/PDIF and I²S interfaces. The flexible audio interfaces allow HF83311_VC1/HF83311Q_VC1 to connect to various audio data converters, digital audio receivers and transmitters, as well as digital signal processors.
It is compatible with AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 digital audio interfaces.
HF83311_VC1/HF83311Q_VC1 provides multiple input and output modes, including USB input/I²S output and USB input/S/PDIF output, to meet the requirements of different application scenarios.
!!! warning "Important Note"
**Model HF83311Q_VC1 supports MQA audio decoding, while model HF83311_VC1 does not support this feature.**
### 1.2 Product Features
**Audio Performance Features**
- Supports input and output sample rates up to 768kHz
- Supports DSD64/128/256/512 formats
- **HF83311Q_VC1 supports MQA decoding**
- Built-in SSRC module, supporting sample rate conversion between different interfaces and different sample rates
- SSRC performance: THD+N (@1kHz, 0dBFs) < -130dB, SNR: > 140dB
- Supports 16–32-bit audio data formats
- Supports S/PDIF output
**Interface Support Features**
- **Multiple digital interface support**
- Supports USB audio input
- Supports I²S master mode audio output
- Supports S/PDIF audio output
- Supports UART configuration interface
**USB Function Features**
- **USB interface features**
- Supports UAC 1.0
- Supports UAC 2.0
- Supports firmware upgrade via USB
- Supports HID and can upgrade MCU firmware via HID
**System Compatibility**
- UAC 2.0 protocol, supports ASIO
- Supports multiple operating systems, such as Windows, Linux, Android, macOS and iOS
### 1.3 Application Scenarios
- USB HiFi Decoder
- USB HiFi Audio Interface
- USB HiFi Digital Player
### 1.4 Product Functional Block Diagram
<figure markdown="span">
![HF83311 Block Diagram](/assets/images/hifi_audio/hf83311_diagram.png "HF83311 Block Diagram"){width="600"}
<figcaption>Figure 1: HF83311_VC1/HF83311Q_VC1 Functional Block Diagram</figcaption>
</figure>
### 1.5 Ordering Information
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Hardware Model | Comments |
|:--------|:----------------|:-------------|:-----------|:------------|:------------|
| HF83311_VC1 | HF83311-VC1 | SMT LGA-52 | 13x13mm | A316-Mini-V1 | |
| HF83311Q_VC1 | HF83311Q-VC1 | SMT LGA-52 | 13x13mm | A316-Mini-V1 |**Supports MQA decoding**|
## 2. Modes and Specifications
### 2.1 Supported Input/Output Modes
| Mode No. | Input/Output Mode | Description |
|:--------:|:------------------------|:------------------------|
| 1 | USB(UAC2.0) in-I²S(MASTER) out | USB input, I²S output, UAC2.0 |
| 2 | USB(UAC1.0) in-I²S(MASTER) out | USB input, I²S output, UAC1.0 |
| 3 | USB IN(UAC2.0)-SPDIF OUT | USB input, S/PDIF output, UAC2.0 |
### 2.2 Detailed Parameters of Each Operating Mode
#### 2.2.1 USB(UAC2.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz, 705.6kHz, 768kHz |
| **DSD Native** | DSD64, DSD128, DSD256, DSD512 |
| **DOP** | DOP64, DOP128, DOP256 |
| **MQA** | Supported only by HF83311Q_VC1 |
#### 2.2.2 USB(UAC1.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 48kHz |
#### 2.2.3 USB(UAC2.0) in → S/PDIF out Mode
**Input/Output Sample Rate Support:**
| Interface | Audio Format | Supported Sample Rates |
|:-----|:---------|:-------------|
| **USB Input** | PCM | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz |
| **S/PDIF Output** | PCM | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
**SSRC (Sample Rate Conversion) Function:**
* Input sample rate ≤ 192kHz: Output at original sample rate
* Input sample rate > 192kHz: Output at 192kHz after SSRC conversion
**SSRC Performance Specifications:**
* THD+N (@1kHz, 0dBFs): ≤-130dB
* SNR: ≥140dB
#### 2.2.4 USB(UAC1.0) in → S/PDIF out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 48kHz |
## 3. Pin Configuration and Functions
### 3.1 HF83311_VC1/HF83311Q_VC1 Pin Layout
<figure markdown="span">
![HF83311-VC1 Pin Diagram](/assets/images/hifi_audio/a316_pin.png "HF83311-VC1 Pin Diagram"){width=400}
<figcaption>Figure 2: HF83311_VC1/HF83311Q_VC1 Pin Arrangement Diagram</figcaption>
</figure>
### 3.2 HF83311_VC1/HF83311Q_VC1 Pin Description
| Pin No. | Name | Type | Function |
|:--------:|:----------|:------|:-----------------------------|
| 1 | 3.3V | P | Module 3.3V power supply |
| 2 | X1D13 | I/O | NC |
| 3 | X1D16 | I/O | NC |
| 4 | GND | P | Module ground |
| 5 | X1D17 | I/O | NC |
| 6 | X1D18 | I/O | NC |
| 7 | X1D19 | I/O | NC |
| 8 | X1D22 | I/O | NC |
| 9 | X0D29 | I/O | NC |
| 10 | X0D35 | I/O | I²S_OUT_BCLK(MASTER) |
| 11 | X0D36 | I/O | I²S_OUT_LRCLK(MASTER) |
| 12 | X0D37 | I/O | NC |
| 13 | X0D38 | I/O | I²S_OUT_DATA0(MASTER) |
| 14 | X0D40 | I/O | NC |
| 15 | X0D39 | I/O | I²S_OUT_MCLK(MASTER) |
| 16 | X0D42 | I/O | NC |
| 17 | X0D41 | I/O | NC |
| 18 | X0D43 | I/O | NC |
| 19 | X1D34 | I/O | S/PDIF output |
| 20 | GND | P | Module ground |
| 21 | X0D30 | I/O | CTL_MUTE; control output, active high |
| 22 | X0D31 | I/O | NC |
| 23 | X0D32 | I/O | NC |
| 24 | X0D33 | I/O | NC |
| 25 | GND | P | Module ground |
| 26 | GND | P | Module ground |
| 27 | GND | P | Module ground |
| 28 | X0D00 | I/O | UART_TX, connected to MCU_RX |
| 29 | X0D11 | I/O | UART_RX, connected to MCU_TX |
| 30 | X1D00 | I/O | NC |
| 31 | X1D01 | I/O | NC |
| 32 | GND | P | Module ground |
| 33 | X1D09 | I/O | NC |
| 34 | X1D10 | I/O | NC |
| 35 | X1D11 | I/O | Connected to Pin 15 X0D39 |
| 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 |
!!! info "Pin Type Description"
In the table, I/O type definitions: I = input, O = output, P = power, I/O = input/output
## 4. Revision History
| Version | Date | Description | Editor |
|:------|:-------------|:---------------------------------------|:-------------|
| V1.0 | 2025-05-07 | Initial version release | |
| | | | |
| | | | |
## 5. Feedback
<details>
<summary>Click to expand feedback form</summary>
--8<-- "common/customer_form.md"
</details>

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---
title: HF86611_VB1/HF86611Q_VB1 768kHz/DSD512 USB Multi-Channel and Multi-Interface HiFi Audio Decoder
description: HF86611_VB1/HF86611Q_VB1 High-Performance Audio Decoder Technical Document
author: Technical Documentation Dept.
date: 2025-05-07
print_page: true
tags:
- Audio Decoder
- XMOS
- USB HiFi
- Multi-Channel
- MQA
---
--8<-- "common/phaten_xmos_support_img.md"
<div class="grid" markdown>
<div class="card-wide" markdown>
# HF86611_VB1/HF86611Q_VB1
__Multi-Channel PCM 768kHz/DSD512 USB HiFi Decoder Supporting USB/4CH SPDIF Input and I2S Output__
</div>
</div>
## 1. Introduction
### 1.1 Product Description
HF86611_VB1/HF86611Q_VB1 is a USB multi-channel and multi-interface HiFi audio decoder that supports up to PCM 768kHz/DSD512, designed specifically for HiFi audio DAC applications.
HF86611_VB1/HF86611Q_VB1 supports multiple standard audio formats, including USB Audio Class 1.0/2.0, S/PDIF and I²S interfaces. The flexible audio interfaces allow HF86611_VB1/HF86611Q_VB1 to connect to various audio data converters, digital audio receivers and transmitters, as well as digital signal processors.
It is compatible with AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 digital audio interfaces.
HF86611_VB1/HF86611Q_VB1 provides multiple input and output modes, including USB input/I²S output and S/PDIF input/I²S output, to meet the requirements of different application scenarios.
!!! warning "Important Note"
**Model HF86611Q_VB1 supports MQA audio decoding, while model HF86611_VB1 does not support this feature.**
### 1.2 Product Features
**Audio Performance Features**
- Supports input and output sample rates up to 768kHz
- Supports DSD64/128/256/512 formats
- **HF86611Q_VB1 supports MQA decoding**
- Built-in SSRC and ASRC modules, supporting sample rate conversion between different interfaces and different sample rates
- SSRC performance: THD+N (@1kHz, 0dBFs) < -130dB, SNR: > 140dB
- ASRC performance: THD+N (@1kHz, 0dBFs) < -130dB, SNR: > 135dB
- Supports 16–32-bit audio data formats
**Interface Support Features**
- **Multiple digital interface support**
- Supports USB audio input
- Supports I²S master mode audio output
- Supports S/PDIF audio input
- Supports UART configuration interface
- Supports four S/PDIF input channels
**USB Function Features**
- **USB interface features**
- Supports UAC 1.0
- Supports UAC 2.0
- Supports firmware upgrade via USB
- Supports HID and can upgrade MCU firmware via HID
**System Compatibility**
- UAC 2.0 protocol, supports ASIO
- Supports multiple operating systems, such as Windows, Linux, Android, macOS and iOS
### 1.3 Application Scenarios
- USB HiFi Decoder
- USB HiFi Audio Interface
- USB HiFi Digital Player
### 1.4 Product Functional Block Diagram
<figure markdown="span">
![HF86611 Block Diagram](/assets/images/hifi_audio/hf86611_diagram.png "HF86611 Block Diagram"){width="600"}
<figcaption>Figure 1: HF86611_VB1/HF86611Q_VB1 Functional Block Diagram</figcaption>
</figure>
### 1.5 Ordering Information
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Hardware Model | Comments |
|:--------|:----------------|:-------------|:-----------|:------------|:------------|
| HF86611_VB1 | HF86611-VB1 | SMT STAMP-30 | 19x26mm | A316-1926-V1 | |
| HF86611Q_VB1 | HF86611Q-VB1 | SMT STAMP-30 | 19x26mm | A316-1926-V1 | **Supports MQA decoding**|
## 2. Modes and Specifications
### 2.1 Supported Input/Output Modes
| Mode No. | Input/Output Mode | Description |
|:--------:|:------------------------|:------------------------|
| 1 | USB(UAC2.0) in-I²S(Master) out | USB input, I²S output, UAC2.0 |
| 2 | USB(UAC1.0) in-I²S(Master) out | USB input, I²S output, UAC1.0 |
| 3 | S/PDIF1 IN-I²S(Master) OUT | S/PDIF channel 1 input, I²S output |
| 4 | S/PDIF2 IN-I²S(Master) OUT | S/PDIF channel 2 input, I²S output |
| 5 | S/PDIF3 IN-I²S(Master) OUT | S/PDIF channel 3 input, I²S output |
| 6 | S/PDIF4 IN-I²S(Master) OUT | S/PDIF channel 4 input, I²S output |
### 2.2 Detailed Parameters of Each Operating Mode
#### 2.2.1 USB(UAC2.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz, 705.6kHz, 768kHz |
| **DSD Native** | DSD64, DSD128, DSD256, DSD512 |
| **DOP** | DOP64, DOP128, DOP256 |
| **MQA** | Supported only by HF86611Q_VB1 |
#### 2.2.2 USB(UAC1.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 48kHz |
#### 2.2.3 S/PDIF in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
## 3. Pin Configuration and Functions
### 3.1 HF86611_VB1/HF86611Q_VB1 Pin Layout
<figure markdown="span">
![HF86611-VB1 Pin Diagram](/assets/images/hifi_audio/a316_1926v1_module_pin_define.png "HF86611-VB1 Pin Diagram"){width=400}
<figcaption>Figure 2: HF86611-VB1 Pin Arrangement Diagram</figcaption>
</figure>
### 3.2 HF86611_VB1/HF86611Q_VB1 Pin Description
| Pin No. | Name | Type | Function |
|:--------:|:----------|:------|:-----------------------------|
| 1 | GND | P | Module ground |
| 2 | 3V3 | P | Module 3.3V power supply |
| 3 | X1D11 | I/O | Connected to Pin 16 MCLK |
| 4 | X1D01 | I/O | S/PDIF channel 4 input |
| 5 | X1D09 | I/O | NC |
| 6 | X1D10 | I/O | NC |
| 7 | X1D00 | I/O | NC |
| 8 | X0D11 | I/O | UART_RX, connected to MCU_TX |
| 9 | X0D00 | I/O | UART_TX, connected to MCU_RX |
| 10 | X0D31 | I/O | NC |
| 11 | X0D30 | I/O | CTL_MUTE; control output, active high |
| 12 | X1D34 | I/O | S/PDIF channel 3 input |
| 13 | X0D43 | I/O | NC |
| 14 | X0D41 | I/O | NC |
| 15 | X0D42 | I/O | NC |
| 16 | MCLK | I/O | Active crystal 49.152/45.1584MHz clock output |
| 17 | X0D40 | I/O | NC |
| 18 | X0D38 | I/O | I²S_OUT_DATA0(Master) |
| 19 | X0D37 | I/O | NC |
| 20 | X0D36 | I/O | I²S_OUT_LRCLK(Master) |
| 21 | X0D35 | I/O | I²S_OUT_BCLK(MASTER) |
| 22 | X0D29 | I/O | NC |
| 23 | X1D22 | I/O | S/PDIF channel 2 input |
| 24 | X1D19 | I/O | NC |
| 25 | X1D16 | I/O | NC |
| 26 | USB_DP | I/O | USB data positive |
| 27 | USB_DM | I/O | USB data negative |
| 28 | X1D18 | I/O | NC |
| 29 | X1D17 | I/O | NC |
| 30 | X1D13 | I/O | S/PDIF channel 1 input |
!!! info "Pin Type Description"
- In the table, I/O type definitions: I = input, O = output, P = power, I/O = input/output
## 4. Revision History
| Version | Date | Description | Editor |
|:------|:-------------|:---------------------------------------|:-------------|
| V1.0 | 2025-05-07 | Initial version release | |
| | | | |
| | | | |
## 5. Feedback
<details>
<summary>Click to expand feedback form</summary>
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---
title: HF86611_VC1/HF86611Q_VC1 768kHz/DSD512 USB Multi-Channel and Multi-Interface HiFi Audio Decoder
description: HF86611_VC1/HF86611Q_VC1 High-Performance Audio Decoder Technical Document
author: Technical Documentation Dept.
date: 2025-05-07
print_page: true
---
--8<-- "common/phaten_xmos_support_img.md"
<div class="grid" markdown>
<div class="card-wide" markdown>
# HF86611_VC1/HF86611Q_VC1
__Multi-Channel PCM 768kHz/DSD512 USB HiFi Decoder Supporting USB/4-Channel SPDIF Input and I2S Output__
</div>
</div>
## 1. Introduction
### 1.1 Product Description
HF86611_VC1/HF86611Q_VC1 is a USB multi-channel and multi-interface HiFi audio decoder that supports up to PCM 768kHz/DSD512, designed specifically for HiFi audio DAC applications.
HF86611_VC1/HF86611Q_VC1 supports multiple standard audio formats, including USB Audio Class 1.0/2.0, S/PDIF and I²S interfaces. The flexible audio interfaces allow HF86611_VC1/HF86611Q_VC1 to connect to various audio data converters, digital audio receivers and transmitters, as well as digital signal processors.
It is compatible with AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 digital audio interfaces.
HF86611_VC1/HF86611Q_VC1 provides multiple input and output modes, including USB input/I²S output and S/PDIF input/I²S output, to meet the requirements of different application scenarios.
!!! warning "Important Note"
**Model HF86611Q_VC1 supports MQA audio decoding, while model HF86611_VC1 does not support this feature.**
### 1.2 Product Features
**Audio Performance Features**
- Supports input and output sample rates up to 768kHz
- Supports DSD64/128/256/512 formats
- **HF86611Q_VC1 supports MQA decoding**
- Built-in SSRC and ASRC modules, supporting sample rate conversion between different interfaces and different sample rates
- SSRC performance: THD+N (@1kHz, 0dBFs) < -130dB, SNR: > 140dB
- ASRC performance: THD+N (@1kHz, 0dBFs) < -130dB, SNR: > 135dB
- Supports 16–32-bit audio data formats
- Supports four S/PDIF input channels
**Interface Support Features**
- **Multiple digital interface support**
- Supports USB audio input
- Supports I²S master mode audio output
- Supports S/PDIF audio input
- Supports UART configuration interface
**USB Function Features**
- **USB interface features**
- Supports UAC 1.0
- Supports UAC 2.0
- Supports firmware upgrade via USB
- Supports HID and can upgrade MCU firmware via HID
**System Compatibility**
- UAC 2.0 protocol, supports ASIO
- Supports multiple operating systems, such as Windows, Linux, Android, macOS and iOS
### 1.3 Application Scenarios
- USB HiFi Decoder
- USB HiFi Audio Interface
- USB HiFi Digital Player
### 1.4 Product Functional Block Diagram
<figure markdown="span">
![HF86611 Block Diagram](/assets/images/hifi_audio/hf86611_diagram.png "HF86611 Block Diagram"){width="600"}
<figcaption>Figure 1: HF86611_VC1/HF86611Q_VC1 Functional Block Diagram</figcaption>
</figure>
### 1.5 Ordering Information
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Hardware Model | Comments |
|:--------|:----------------|:-------------|:-----------|:------------|:------------|
| HF86611_VC1 | HF86611-VC1 | SMT LGA-52 | 13x13mm | A316-Mini-V1 | |
| HF86611Q_VC1 | HF86611Q-VC1 | SMT LGA-52 | 13x13mm | A316-Mini-V1 |**Supports MQA decoding**|
## 2. Modes and Specifications
### 2.1 Supported Input/Output Modes
| Mode No. | Input/Output Mode | Description |
|:--------:|:------------------------|:------------------------|
| 1 | USB(UAC2.0) in-I²S(MASTER) out | USB input, I²S output, UAC2.0 |
| 2 | USB(UAC1.0) in-I²S(MASTER) out | USB input, I²S output, UAC1.0 |
| 3 | S/PDIF1 IN-I²S(MASTER) OUT | S/PDIF channel 1 input, I²S output |
| 4 | S/PDIF2 IN-I²S(MASTER) OUT | S/PDIF channel 2 input, I²S output |
| 5 | S/PDIF3 IN-I²S(MASTER) OUT | S/PDIF channel 3 input, I²S output |
| 6 | S/PDIF4 IN-I²S(MASTER) OUT | S/PDIF channel 4 input, I²S output |
### 2.2 Detailed Parameters of Each Operating Mode
#### 2.2.1 USB(UAC2.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz, 705.6kHz, 768kHz |
| **DSD Native** | DSD64, DSD128, DSD256, DSD512 |
| **DOP** | DOP64, DOP128, DOP256 |
| **MQA** | Supported only by HF86611Q_VC1 |
#### 2.2.2 USB(UAC1.0) in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 48kHz |
#### 2.2.3 S/PDIF in → I²S out Mode
**Supported Audio Formats and Sample Rates:**
| Audio Format | Supported Sample Rates |
|:---------|:-------------|
| **PCM** | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
## 3. Pin Configuration and Functions
### 3.1 HF86611_VC1/HF86611Q_VC1 Pin Layout
<figure markdown="span">
![HF86611-VC1 Pin Diagram](/assets/images/hifi_audio/a316_pin.png "HF86611-VC1 Pin Diagram"){width=400}
<figcaption>Figure 2: HF86611_VC1/HF86611Q_VC1 Pin Arrangement Diagram</figcaption>
</figure>
### 3.2 HF86611_VC1/HF86611Q_VC1 Pin Description
| Pin No. | Name | Type | Function |
|:--------:|:----------|:------|:-----------------------------|
| 1 | 3.3V | P | Module 3.3V power supply |
| 2 | X1D13 | I/O | S/PDIF channel 1 input |
| 3 | X1D16 | I/O | NC |
| 4 | GND | P | Module ground |
| 5 | X1D17 | I/O | NC |
| 6 | X1D18 | I/O | NC |
| 7 | X1D19 | I/O | NC |
| 8 | X1D22 | I/O | S/PDIF channel 2 input |
| 9 | X0D29 | I/O | NC |
| 10 | X0D35 | I/O | I²S_OUT_BCLK(MASTER) |
| 11 | X0D36 | I/O | I²S_OUT_LRCLK(MASTER) |
| 12 | X0D37 | I/O | NC |
| 13 | X0D38 | I/O | I²S_OUT_DATA0(MASTER) |
| 14 | X0D40 | I/O | NC |
| 15 | X0D39 | I/O | I²S_OUT_MCLK(MASTER) |
| 16 | X0D42 | I/O | NC |
| 17 | X0D41 | I/O | NC |
| 18 | X0D43 | I/O | NC |
| 19 | X1D34 | I/O | S/PDIF channel 3 input |
| 20 | GND | P | Module ground |
| 21 | X0D30 | I/O | CTL_MUTE; control output, active high |
| 22 | X0D31 | I/O | NC |
| 23 | X0D32 | I/O | NC |
| 24 | X0D33 | I/O | NC |
| 25 | GND | P | Module ground |
| 26 | GND | P | Module ground |
| 27 | GND | P | Module ground |
| 28 | X0D00 | I/O | UART_TX, connected to MCU_RX |
| 29 | X0D11 | I/O | UART_RX, connected to MCU_TX |
| 30 | X1D00 | I/O | NC |
| 31 | X1D10 | I/O | NC |
| 32 | GND | P | Module ground |
| 33 | X1D09 | I/O | NC |
| 34 | X1D01 | I/O | S/PDIF channel 4 input |
| 35 | X1D11 | I/O | Connected to Pin 15 X0D39 |
| 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 |
!!! info "Pin Type Description"
In the table, I/O type definitions: I = input, O = output, P = power, I/O = input/output
## 4. Revision History
| Version | Date | Description | Editor |
|:------|:-------------|:---------------------------------------|:-------------|
| V1.0 | 2025-05-07 | Initial version release | |
| | | | |
| | | | |
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