PH73211L_VC1/PH73211LQ_VC1 384KHz/DSD256 USB Low-Power HiFi Audio Decoder¶
1. Introduction¶
1.1 Product Description¶
PH73211L_VC1/PH73211LQ_VC1 is a USB low-power HiFi audio decoder supporting up to PCM 384KHz/DSD256, specifically designed for portable HiFi decoder audio applications.
PH73211L_VC1/PH73211LQ_VC1 supports multiple standard audio formats, including USB Audio Class 1.0/2.0 and I²S interface. The flexible audio interface allows PH73211L_VC1/PH73211LQ_VC1 to connect to various audio data converters, digital audio receivers and transmitters, as well as digital signal processors.
PH73211L_VC1/PH73211LQ_VC1 provides USB input/I²S output mode, meeting the requirements of high-quality audio application scenarios.
Important Note
The PH73211LQ_VC1 model supports MQA audio decoding, while the PH73211L_VC1 model does not support this feature.
1.2 Product Features¶
Audio Performance Features
- Supports input and output sampling rates up to 384kHz
- Supports DSD64/128/256 formats
- PH73211LQ_VC1 supports MQA decoding
- Built-in SSRC and ASRC modules, supporting conversion between different interfaces and sampling rates
- Supports 16-32bit audio data formats
Interface Support Features
- Multiple Digital Interface Support
- Supports USB audio input
- Supports I²S master mode audio output
- Supports UART configuration interface
USB Features
- USB Interface Features
- Supports UAC 1.0
- Supports UAC 2.0
- Supports firmware upgrade via USB
- Supports HID, allowing MCU firmware upgrade 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 Low-Power HiFi Decoder (USB Portable HiFi Decoder)
1.4 Product Function Block Diagram¶
1.5 Ordering Information¶
| PRODUCT | ORDERING NUMBER | PACKAGE BODY | SIZE (NOM) | Hardware Model | Comments |
|---|---|---|---|---|---|
| PH73211L_VC1 | PH73211L-VC1 | SMT STAMP-30 | 13x13mm | A316-Mini-V1 | |
| PH73211LQ_VC1 | PH73211LQ-VC1 | SMT STAMP-30 | 13x13mm | A316-Mini-V1 | Supports MQA decoding |
2. Modes and Specifications¶
2.1 Supported Input/Output Modes¶
| Mode Number | Input/Output Mode | Description |
|---|---|---|
| 1 | USB(UAC2.0) in-I²S(Master) out | USB input, I²S output, UAC2.0, maximum support for 384KHz/DSD256 |
| 2 | USB(UAC1.0) in-I²S(Master) out | USB input, I²S output, UAC1.0, fixed at 48KHz |
2.2 Detailed Parameters for Each Operating Mode¶
2.2.1 USB(UAC2.0) in → I²S out Mode¶
Supported Audio Formats and Sampling Rates:
| Audio Format | Supported Sampling Rates |
|---|---|
| PCM | 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz |
| DSD Native | DSD64, DSD128, DSD256 |
| DOP | DOP64, DOP128, DOP256 |
| MQA | Only supported by PH73211LQ_VC1 |
2.2.2 USB(UAC1.0) in → I²S out Mode¶
Supported Audio Formats and Sampling Rates:
| Audio Format | Supported Sampling Rates |
|---|---|
| PCM | 48kHz |
3. Pin Configuration and Function¶
3.1 PH73211L_VC1/PH73211LQ_VC1 Pin Layout¶
3.2 PH73211L_VC1/PH73211LQ_VC1 Pin Description¶
| Module Pin Number | Name | Type | Function |
|---|---|---|---|
| 1 | 3.3V | P | Module 3.3V power supply |
| 2 | X1D13 | I/O | Multi-function GPIO |
| 3 | X1D16 | I/O | Multi-function GPIO |
| 4 | GND | P | Module ground |
| 5 | X1D17 | I/O | Multi-function GPIO |
| 6 | X1D18 | I/O | Multi-function GPIO |
| 7 | X1D19 | I/O | Multi-function GPIO |
| 8 | X1D22 | I/O | Multi-function GPIO |
| 9 | X0D29 | I/O | Multi-function GPIO |
| 10 | X0D35 | I/O | Multi-function GPIO |
| 11 | X0D36 | I/O | Multi-function GPIO |
| 12 | X0D37 | I/O | Multi-function GPIO |
| 13 | X0D38 | I/O | Multi-function GPIO |
| 14 | X0D40 | I/O | Multi-function GPIO |
| 15 | X0D39 | I/O | Multi-function GPIO |
| 16 | X0D42 | I/O | Multi-function GPIO |
| 17 | X0D41 | I/O | Multi-function GPIO |
| 18 | X0D43 | I/O | Multi-function GPIO |
| 19 | X1D34 | I/O | Multi-function GPIO |
| 20 | GND | P | Module ground |
| 21 | X0D30 | I/O | Multi-function GPIO |
| 22 | X0D31 | I/O | Multi-function GPIO |
| 23 | X0D32 | I/O | Multi-function GPIO |
| 24 | X0D32 | I/O | Multi-function GPIO |
| 25 | GND | P | Module ground |
| 26 | GND | P | Module ground |
| 27 | GND | P | Module ground |
| 28 | X0D00 | I/O | Multi-function GPIO |
| 29 | X0D11 | I/O | Multi-function GPIO |
| 30 | X1D00 | I/O | Multi-function GPIO |
| 31 | X1D01 | I/O | Multi-function GPIO |
| 32 | GND | P | Module ground |
| 33 | X1D09 | I/O | Multi-function GPIO |
| 34 | X1D10 | I/O | Multi-function GPIO |
| 35 | X1D11 | I/O | Multi-function GPIO/XU316 internal clock output |
| 36 | GND | P | Module ground |
| 37 | GND | P | Module ground |
| 38 | TDI | I/O | Multi-function GPIO |
| 39 | TDO | I/O | Multi-function GPIO |
| 40 | TMS | I/O | Multi-function GPIO |
| 41 | TCK | I/O | Multi-function GPIO |
| 42 | RST_N | I/O | Multi-function GPIO |
| 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. Revision History¶
| Version | Date | Description | Revised by |
|---|---|---|---|
| V1.0 | 2025-05-07 | Initial version release | |