Spdif decoder
About the Spdif decoder PCB
Spdif decoder is an open source NXP PCB design by maddoxlab, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 92.7 × 96.5 mm, with 28 components from 13 distinct parts.
Its main chip is the Teensy4.0, from the NXP family. Other key parts include the 74AHCT595. By type, the board carries 7 resistors, 6 connectors, 6 diodes, 4 ICs, 4 capacitors and 1 inductor.
From the project
Design files and code for S/Plitter, a box that turns optical S/PDIF signals into separate TTL bits for EEG triggering in auditory experiments
Main components on the Spdif decoder
Spdif decoder bill of materials (BOM)
28 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Teensy4.0 | Teensy40 | U1 |
| 3 | 74AHCT595 | DIP-16_W7.62mm | U2, U3, U4 |
| 1 | DB25_Female | DSUB-25_Female_Horizontal_P2.77x2.84mm_EdgePinOffset9.40mm | J1 |
| 1 | TBL009V-254-24GY-2GY | TBL009V25424GY2GY | J2 |
| 1 | TBL009V-254-02GY-2GY | TBL009V25402GY2GY | J3 |
| 1 | TBL009V-254-16GY-2GY | TBL009V25416GY2GY | J5 |
| 1 | TBL009V-254-10GY-2GY | TBL009V25410GY2GY | J6 |
| 1 | TORX1950A(F) | TORX1950AF | J8 |
| 6 | LED | LED_D3.0mm | D1, D2, D3, D4, D5, D6 |
| 1 | 47u | L_Axial_L5.3mm_D2.2mm_P2.54mm_Vertical_Vishay_IM-1 | L1 |
| 4 | 0.1u | C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C2, C3, C4 |
| 6 | 560 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6 |
| 1 | 22 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7 |
Spdif decoder design files
The KiCad project lives in the maddoxlab/spdif-splitter repository on GitHub; these links point at the commit this page was built from.
Spdif decoder: common questions
What microcontroller does the Spdif decoder use?
The Spdif decoder is built around the Teensy4.0, from the NXP family.
How big is the Spdif decoder PCB?
The Spdif decoder measures 92.7 × 96.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Spdif decoder?
28 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the Spdif decoder design files?
From the maddoxlab/spdif-splitter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Spdif decoder design in my own project?
Yes, under the terms of its BSD-3-Clause license, which maddoxlab chose for the repository.
Can I test firmware for the Spdif decoder without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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