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Syzygy octosdi

calebfletcher·syzygy-octosdi

Syzygy octosdi PCB layout, top view — open source STM32 board by calebfletcher

About the Syzygy octosdi PCB

Syzygy octosdi is an open source STM32 PCB design by calebfletcher, published on GitHub. It is a 4-layer board measuring 100 × 50 mm, with 211 components from 29 distinct parts.

Its main chip is the STM32G031G8Ux, from the STM32 family. Other key parts include the LMH0344SQE_NOPB, PCAL6416AHF and GS2988-INE3. By type, the board carries 87 capacitors, 83 resistors, 12 diodes, 11 ICs, 9 connectors and 8 inductors.

From the project

SYZYGY TXR4 Compatible SDI-3G Pod, with quad inputs and quad outputs.

SYZYGY™ TXR4 Compatible 3G-SDI Pod, with quad inputs and quad outputs.

Compatible with the SYZYGY Specification Version 1.1.1. The "SYZYGY™" mark is owned by Opal Kelly.

Four layers, 1.6 mm, 1 oz outer/0.5 oz inner, JLC04161H-7628 stackup, controlled impedance.

Following the pod compatibility table in Appendix A of the SYZYGY Specification Version 1.1.1:

The current budgets are conservative estimates from the schematic and component specifications; they have not been verified by measurement. The 5V pin is routed only to a test point. VIO powers the I/O side of the two expanders and the…

Syzygy octosdi, from the project README
From the project README

Main components on the Syzygy octosdi

LMH0344SQE_NOPBPCAL6416AHFGS2988-INE3STM32G031G8Ux

Syzygy octosdi bill of materials (BOM)

211 components, 29 distinct parts.

QtyPartRefs
4
LMH0344SQE_NOPB
Texas Instruments
U1, U2, U3, U4
2
PCAL6416AHF
U5, U6
4
GS2988-INE3
SEMTECH
U7, U8, U9, U10
1
STM32G031G8Ux
U11
1
SX7DF148_500B20F30DNN
Shenzhen SCTF Elec
X1
1
QTH-020-01-F-D-DP-A
Samtec
CN1
8
Conn_BNC
Molex
J1, J2, J3, J4, J5, J6, J7, J8
1
LED Red
D1
10
LED Green
D2, D3, D4, D5, D6, D7, D8, D9 +2
1
LED Orange
D12
4
3n9
L1, L2, L3, L4
4
5n6
L5, L6, L7, L8
18
10n
C1, C2, C45, C46, C51, C52, C55, C56 +10
26
4u7
C3, C9, C10, C18, C19, C27, C28, C36 +18
11
100n
C4, C12, C13, C21, C22, C30, C31, C39 +3
8
C
C5, C14, C23, C32, C53, C63, C73, C83
8
1u
C6, C7, C15, C16, C24, C25, C33, C34
8
1u
C8, C11, C17, C20, C26, C29, C35, C38
8
100n
C41, C42, C43, C44, C49, C59, C69, C79
9
1k
R1, R9, R16, R23, R30, R36, R47, R58 +1
Show 9 more
QtyPartRefs
26
10k
R2, R3, R4, R5, R10, R11, R17, R18 +18
24
75
R6, R7, R13, R14, R20, R21, R27, R28 +16
4
37.4
R8, R15, R22, R29
4
0
R12, R19, R26, R33
8
49.9
R34, R35, R45, R46, R56, R57, R67, R68
4
750 1%
R37, R48, R59, R70
2
2k2
R78, R79
1
10k 1%
R80
1
4k7
R83

Syzygy octosdi design files

The KiCad project lives in the calebfletcher/syzygy-octosdi repository on GitHub; these links point at the commit this page was built from.

Syzygy octosdi: common questions

What microcontroller does the Syzygy octosdi use?

The Syzygy octosdi is built around the STM32G031G8Ux, from the STM32 family.

How big is the Syzygy octosdi PCB?

The Syzygy octosdi measures 100 × 50 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the Syzygy octosdi?

211 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Syzygy octosdi design files?

From the calebfletcher/syzygy-octosdi repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Syzygy octosdi design in my own project?

The repository has no license, so all rights stay with calebfletcher. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Syzygy octosdi without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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