Designing a Bitcoin Miner

Thought for 37 sec

I checked it.

There is no ERC result currently available for the decoupling_caps review category, so Flux is not reporting a missing-decoupling warning around X1 right now. The decoupling check is the correct ERC category for this kind of issue
In the schematic, X1 has:
- VDD tied to VCC_3V3
- GND tied to GND
- OUT connected only to IC1 CLKI
The VCC_3V3 net also includes C17 and C18, so there is capacitance on the rail, but it is not obvious from ERC alone that one of those is a dedicated local bypass capacitor specifically for X1.

So the answer is:

ERC: no missing-decoupling flag reported for X1
Design clarity: still worth checking whether C17 or C18 is intended to be the oscillator’s local decoupler

If you want, I can next check the oscillator datasheet guidance and tell you whether X1 should have its own dedicated 100 nF cap placed right at the supply pin.

louisdesyjr

save project

Thought for 33 sec

flux

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I could not find relevant Flux documentation for a manual project-save feature, so this probably means that action isn’t available here.

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Project Name

Bitcoin Miner Controller Board

Description

Bitcoin miner controller board revised so J2 is a dedicated USB-C USB 2.0 control and monitoring connector feeding U2, while X1 is a dedicated 25 MHz oscillator driving IC1 on ASIC_CLK for the mining subsystem.

Properties

Domain

Bitcoin Mining Hardware

Connector Type

12V power input, USB-C service port, UART debug header, fan header, mining interface header

Connectivity

USB primary control and monitoring; SWD debug only

System Architecture

Diagram

Operating Voltage

Compliance

Prototype / evaluation hardware only

Implemen… Details

Primary host interface is USB through the on-board USB-to-UART bridge and USB-C connector. SWD header is retained only for programming and bring-up. Mining subsystem uses dedicated 25MHz oscillator X1 into BM1397 CLKI.

Power R…rements

12V input main power path with USB used for control and monitoring interface support

Manufact… Target

Prototype

Acceptan…Criteria

USB is the primary control and monitoring interface, SWD is secondary debug only, and the mining core receives a stable dedicated 25MHz reference clock from X1.

Pricing & Availability

Distributor	Qty 1
Arrow	$8.73–$15.82
Digi-Key	$15.98–$17.79
LCSC	$11.45
Mouser	$20.49
TME	$0.78
Verical	$7.22–$18.68

Controls

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louisdesyjr / Bitcoin Miner Controller Board

Schematic