Tiliqua is a powerful, hackable FPGA-based audio multitool for Eurorack.

For the latest updates, check out the GitHub Repo and CrowdSupply page

Overview

Tiliqua aims to make FPGA-based audio and video synthesis accessible. The Tiliqua hardware architecture alongside a comprehensive collection of example projects built in Amaranth HDL allow you to experiment with synthesis techniques out-of-reach of embedded microcontroller-based platforms. Think: extreme oversampling for alias-free audio-rate modulation, low-latency effects, video synthesis, and high-speed USB audio.

Features

Audio Interface

• 8 (4 in + 4 out) DC-coupled audio channels, 192KHz / 24bit sampling supported
• Touch and proximity sensing on all 8 audio jacks (if unused).
• PWM-controlled, user-programmable red/green LEDs on each audio channel
• Jack insertion detection on all 8 jacks

Motherboard

• Switched rotary encoder with bargraph display.
• Dual USB ports:
  • dbg: Included RP2040-based JTAG debugger supported by openFPGAloader
  • usb2: USB PHY connected directly to FPGA for high-speed USB Audio support
• Display output for video synthesis (maximum resolution 720P/60)
• 2x expansion ports for up to 24 simultaneous audio channels (PMOD-compatible)
• MIDI-In jack (TRS-A standard).

Embedded FPGA SoM

• Lattice ECP5 (25 K) FPGA, supported by open-source FPGA toolchains
• 128Mbit (16 MByte) HyperRAM / oSPI RAM (for long audio buffers or video framebuffers)
• 128 Mbit (16 MByte) SPI flash for user bitstreams
• High-speed USB HS PHY (ULPI)

This module is still in development.

Trying to create something in the spirit of the o_C (ornament & crime) for FPGAs :)