Datasheet Digi2 Pro
Datasheet Digi2 Pro
Overview
The HiFiBerry Digi2 Pro is a high-resolution SPDIF interface for the Raspberry Pi (newer models with 40 pin GPIO connector). This is a special sound card for the Raspberry Pi, optimised for one specific use case: affordable high-quality audio playback.
Facts
- SPDIF output 2-channel
- can be equipped with an additional Digital Signal Processor (DSP) for flexible audio processing
- No volume or sound controls, just passes digital audio as it is sent from the application (“bit-perfect”)
- Output isolation transformer
- Connects directly to the Raspberry Pi, no additional cables needed
- No soldering, comes as a pre-fabricated kit. You just plug it onto the Raspberry Pi, it is conform to the Raspberry Pi hardware-attached-on-top (HAT) specification.
- Compatible with all Raspberry Pi models with a 40-pin GPIO connector
- Directly powered from the Raspberry Pi, no additional power supply
- Low-noise linear voltage regulator
- Low-jitter dual-domain clock for optimised clock decoupling from the Raspberry Pi
- HAT compliant, EEPROM for automatic configuration
- Comes with all components required to mount it. We include 4 M2.5x12mm spacers to fix the board onto the Raspberry Pi
Hardware
1 | Dual-domain clock circuit |
2 | Output isolation transformer |
Connectors and Jumpers
1 | DSP connector |
2 | 5V power supply connector |
3 | TOSLink output |
4 | RCA output |
5 | isolation ground jumper |
6 | optional BNC connector |
Specifications
Output impedance75Ohm
Channel count | 2 | support for non-audio data (e.g. Dolby Digital, DTS) |
Power consumption | <0.3W | |
Sample rates | 44.1-192kHz | see below for TOSLink |
Not all DACs might support sample rates (96kHz, 192kHz) via TOSLink. Check the documentation of your DAC!
Configuration
Overlay for config.txt:dtoverlay=hifiberry-digi-pro