Sovereign Edge Aggregator PCB Design

Thought for 5 sec

I’ll lock the Tier-3 production baseline to Toradex Verdin iMX95 and update the architecture/design/checklist files so the review gates reference that module specifically.

Worked for 1 min 55 sec

flux

Updated the production baseline to Toradex Verdin iMX95 across:

The checklist now requires Verdin-specific gates: exact Verdin iMX95 SKU, Toradex datasheet/carrier guide, Verdin connector footprint and mechanical model, Toradex power requirements, thermal guidance, and confirmation of Ethernet/PTP, TPM, Wi-Fi/BT, and NVMe implementation before schematic capture.

slagout

Create a Verdin iMX95 bring-up and procurement checklist from the updated gates.

Thought for 5 sec

flux

I’ll create a Verdin iMX95 bring-up and procurement checklist from the updated gates, covering documents to obtain, parts to order, first-power validation, secure boot, Ethernet/PTP, NVMe, thermal, and sealed-node tests.

Worked for 2 mins 2 sec

flux

Created Verdin iMX95 Bring-Up and Procurement Checklist.

It covers procurement, Toradex documentation gates, carrier-side part selection, pre-schematic release criteria, first-article power-up, BSP boot, TPM/ATECC security validation, NVMe, Ethernet/PTP, wireless, thermal testing, and production-lock checks. Critical next gate: select the exact Toradex Verdin iMX95 SKU before schematic capture.

Select Verdin SKU

Research Toradex docs

Create power budget

Plan carrier schematic

Fix wrong component

Files

Schematic

Layout

3D View

Verdin iMX95 Bring-Up and Procurement Checklist

Purpose

This checklist converts the approved EcoSynQ Tier-3 production gates into an actionable procurement, design-input, and first-article bring-up plan for a sealed Toradex Verdin iMX95-based Witness Node.

This is a pre-schematic and first-article checklist. Exact voltages, current limits, pin names, and pass/fail thresholds must be finalized after the exact Verdin iMX95 SKU, carrier schematic, and Toradex design files are available.

Baseline Decision

Production module: Toradex Verdin iMX95
Product: EcoSynQ Tier-3 Witness Node
Architecture: sealed Verdin carrier, no exposed GPIO/debug, no SD card, passive cooling
Security: TPM 2.0 primary attestation, ATECC608B auxiliary identity/key element
Storage: NVMe ledger storage, eMMC/UFS only if provided by selected module/SKU
Networking: deterministic dual Ethernet with PTP/TSN validation
Power: USB-C PD input, 15 W minimum input capability, 12 W sustained system target

1. Procurement Package Checklist

1.1 Toradex Module and Development Hardware

Table

Item	Required Action	Acceptance Criteria	Status
Verdin iMX95 SKU	Select exact RAM, eMMC, Wi-Fi/BT, TPM, temperature grade, and lifecycle option	SKU documented with ordering code and lifecycle availability	[ ]
Evaluation carrier	Order Toradex Verdin development/evaluation carrier compatible with iMX95	Carrier supports initial power, Ethernet, debug, storage, and BSP validation	[ ]
Production modules	Order at least 3-5 Verdin iMX95 modules for prototype rotation	Same SKU as production target unless explicitly marked EVT-only	[ ]
Thermal accessories	Order heatsink/TIM or Toradex-recommended thermal hardware	Compatible with Verdin iMX95 thermal path	[ ]
Debug/programming accessories	Order approved Toradex debug adapters/cables	Supports initial BSP bring-up without exposing debug on production enclosure	[ ]

1.2 Required Vendor Documentation

Table

Document	Source	Required Before	Acceptance Criteria	Status
Verdin iMX95 datasheet	Toradex	Schematic	Exact SKU electrical/mechanical limits documented	[ ]
Verdin family carrier board design guide	Toradex	Schematic	Power, connector, layout, and interface rules available	[ ]
Verdin iMX95 pinout	Toradex	Schematic	All used interfaces mapped to connector pins	[ ]
Connector footprint and 3D model	Toradex/vendor	Layout	Footprint and keepouts verified against mechanical model	[ ]
Reference carrier schematic/layout	Toradex	Schematic/layout	Power and interface implementation reviewed	[ ]
Torizon/Linux BSP docs	Toradex	Firmware bring-up	Boot flow and image build path documented	[ ]
Secure boot/provisioning docs	Toradex/NXP	Security design	Fuse, key, update, and recovery flow documented	[ ]
Thermal design guide	Toradex	Mechanical design	Thermal limits and heatsink interface defined	[ ]
Lifecycle/PCN documentation	Toradex	Procurement release	Lifecycle and notification path documented	[ ]

1.3 Carrier-Side Parts to Select

Table

Function	Preferred Production Approach	Selection Gate	Status
USB-C PD sink	Dedicated PD controller for 9 V/12 V profiles	Must support 15 W minimum and safe fallback	[ ]
Input protection	ESD, overvoltage, reverse/backfeed protection as required	Sized from final power budget	[ ]
Main carrier bucks	High-efficiency bucks for 5 V/3.3 V/1.8 V as required	No LDO for high-current rails without thermal proof	[ ]
TPM 2.0	Primary measured-boot attestation device if not module-integrated	Linux/Torizon support confirmed	[ ]
ATECC608B	Auxiliary identity/key device	I2C address, secure provisioning flow defined	[ ]
NVMe connector	M.2 Key M 2230/2242 target	Thermal pad to chassis planned	[ ]
Ethernet PHY/magnetics	Based on Verdin-exposed Ethernet interfaces	1000BASE-T RJ45 or 1000BASE-T1 decision made	[ ]
Wireless	Use Verdin integrated Wi-Fi/BT option if selected, otherwise certified module	Certification path and antenna layout defined	[ ]
Tamper sensors	Hall/enclosure-open switch, optional mesh	Events readable by secure software path	[ ]
Test points	Hidden/pogo-only production access	No exposed debug/GPIO on final enclosure	[ ]

2. Pre-Schematic Design Gates

Table

Gate	Requirement	Pass Criteria	Status
SKU lock	Exact Verdin iMX95 SKU selected	Ordering code and major features recorded	[ ]
Power input	Verdin input voltage/current requirements known	Carrier power tree matches Toradex guide	[ ]
Ethernet topology	Dual Ethernet architecture chosen	Standard RJ45 1000BASE-T or 1000BASE-T1 explicitly selected	[ ]
PTP/TSN	Timing path defined	Selected Ethernet path supports LinuxPTP/IEEE 1588 requirements	[ ]
NVMe	PCIe lane availability confirmed	M.2 Key M mapping and reset/clkreq requirements known	[ ]
Security	TPM/ATECC roles assigned	TPM primary, ATECC auxiliary, provisioning owner defined	[ ]
Debug policy	Production debug access defined	No exposed JTAG/UART/GPIO; authenticated or disabled debug	[ ]
Wireless	Integrated vs carrier-side wireless decided	Certification path and antenna keepout defined	[ ]
Stackup	Controlled-impedance stackup selected	6-layer minimum, 8-layer preferred for dense high-speed carrier	[ ]
Thermal	Passive chassis concept defined	Thermal path from Verdin to aluminum chassis modeled	[ ]

3. Procurement Release Gates

Do not release carrier PCB fabrication or long-lead procurement until these are complete:

Table

Release Gate	Required Evidence	Status
Toradex documentation package archived	Datasheet, carrier guide, pinout, mechanical, thermal, BSP, secure boot docs	[ ]
Verdin connector selected	MPN, footprint, 3D model, mating height, keepouts	[ ]
Stackup approved	Fabricator stackup with impedance targets and coupons	[ ]
Power budget complete	Rail-by-rail budget including Verdin, NVMe, Ethernet, wireless, TPM/ATECC	[ ]
Thermal plan complete	TIM, chassis, sensor locations, worst-case workload assumptions	[ ]
Security plan complete	Key provisioning, secure boot, measured boot, debug lock, recovery flow	[ ]
Test plan complete	Bring-up sequence, test fixtures, pogo access, acceptance criteria	[ ]
DFM review complete	Fabricator and assembler feedback resolved	[ ]

4. First-Article Bring-Up Equipment

Table

Equipment	Purpose	Required
Current-limited bench supply	Safe first power-on	Yes
USB-C PD analyzer/source	Verify PD contract and current draw	Yes
Digital multimeter	Rail and continuity checks	Yes
Oscilloscope, 500 MHz+ preferred	Rails, reset, clocks, Ethernet timing checks	Yes
Thermal camera or thermocouples	Passive thermal validation	Yes
Ethernet PTP-capable test peer	IEEE 1588/LinuxPTP validation	Yes
NVMe test SSD	Storage bring-up and thermal/write validation	Yes
Toradex debug tools	Early boot/debug before production lock	EVT only
ESD-safe bench setup	Protect module and carrier	Yes

5. First-Article Bring-Up Plan

5.1 Unpowered Inspection

Table

Test	Method	Pass Criteria	Status
Visual inspection	Microscope, compare against assembly drawing	No bridges, tombstones, missing parts, reversed polarized components	[ ]
Connector inspection	Inspect Verdin connector, M.2, USB-C, Ethernet	No bent pins, solder void risk, contamination, or coplanarity issue	[ ]
Rail-to-GND resistance	DMM ohms mode before module insertion if possible	No hard shorts; resistance consistent across builds	[ ]
Module seating	Mechanical inspection	Verdin module fully seated, retention hardware installed	[ ]
Enclosure clearance	Dry fit	No interference with module, NVMe, antennas, thermal interface	[ ]

5.2 Power-Up Sequence

Table

Step	Action	Expected Result	Status
1	Power carrier without Verdin if design permits	Carrier auxiliary rails valid; no overcurrent	[ ]
2	Power with Verdin installed using current-limited source	Current below precomputed inrush/idle limit	[ ]
3	Verify USB-C PD contract	Correct 5 V/9 V/12 V profile negotiated	[ ]
4	Measure carrier rails	Rails within tolerance from final schematic	[ ]
5	Measure Verdin input rail	Matches Toradex requirement under idle and boot	[ ]
6	Check reset/power-good behavior	Reset and enable timing follows Toradex guide	[ ]
7	Capture boot current profile	No unexpected brownout, oscillation, or thermal spike	[ ]

5.3 Boot and BSP Validation

Table

Test	Method	Pass Criteria	Status
Boot ROM/BSP boot	Boot Toradex-supported image first	Kernel reaches login or expected provisioning target	[ ]
Device tree validation	Confirm enabled carrier interfaces	Only required production interfaces enabled	[ ]
Nonessential interface disable	Disable unused display/GPIO/debug paths	No external GPIO/debug exposure in production image	[ ]
Torizon/Linux base	Build and boot baseline image	Repeatable boot with recorded image hash	[ ]
Recovery path	Test approved recovery/update mechanism	Device recoverable without exposing insecure debug	[ ]

5.4 Security Bring-Up

Table

Test	Method	Pass Criteria	Status
TPM detect	Linux TPM tools	TPM present and usable for measured boot/attestation	[ ]
ATECC608B detect	I2C scan and CryptoAuthentication tool	Device present at expected address; provisioning state known	[ ]
Secure boot dry run	Follow Toradex/NXP flow in non-destructive mode first	Keys, images, and recovery process verified before fusing	[ ]
Debug lock policy	Confirm production settings	JTAG/UART disabled or authenticated for production	[ ]
Tamper input	Trigger enclosure/hall sensor	Event recorded and sealed into local log	[ ]

5.5 Storage Bring-Up

Table

Test	Method	Pass Criteria	Status
NVMe detect	lspci/nvme list	SSD enumerates reliably across cold boots	[ ]
NVMe thermal	Sustained write test with temperature logging	No thermal shutdown; throttling behavior acceptable	[ ]
Ledger filesystem	Create encrypted/append-only storage target	Mounts reliably and survives power-cycle tests	[ ]
Power-fail behavior	Controlled power interruption during writes	Filesystem and ledger recover cleanly	[ ]

5.6 Ethernet and Timing Bring-Up

Table

Test	Method	Pass Criteria	Status
Ethernet link	Link both ports to known-good peers	Stable link at intended rate	[ ]
Throughput	iperf3 or equivalent	Meets target without excessive CPU or thermal load	[ ]
PTP hardware timestamping	ethtool and linuxptp checks	Hardware timestamp path available and stable	[ ]
PTP sync	ptp4l/phc2sys against reference	Offset/jitter meets product target after target is defined	[ ]
Daisy-chain/mesh test	Uplink/downlink traffic scenario	No packet loss under expected load	[ ]

5.7 Wireless Bring-Up, If Populated

Table

Test	Method	Pass Criteria	Status
Module detect	lspci/lsusb/mmc depending interface	Wireless module enumerates	[ ]
Wi-Fi scan	Regulatory-domain-correct scan	Expected networks visible	[ ]
Bluetooth test	Controller detect and advertise/scan	BT operational if SKU requires it	[ ]
RF coexistence	Ethernet/NVMe/wireless simultaneous load	No reset, thermal runaway, or unacceptable packet loss	[ ]
Certification file check	Confirm module/regulatory data	Required labels and antenna constraints documented	[ ]

5.8 Thermal Validation

Table

Test	Method	Pass Criteria	Status
Idle thermal soak	30-60 minute idle in enclosure	Stable temperatures below component limits	[ ]
CPU/NPU load	Sustained workload	No thermal shutdown; throttling within policy	[ ]
NVMe write load	Sustained writes	SSD remains within rating or controlled throttling occurs	[ ]
Ethernet load	Dual-port throughput plus PTP	PHY/magnetics area remains within safe limit	[ ]
Combined worst case	CPU/NPU + NVMe + Ethernet + wireless if populated	System remains under thermal and power policy limits	[ ]

6. Production Lock Checklist

Table

Item	Requirement	Status
Secure boot fused only after recovery validated	No irreversible fuse step before recovery proof	[ ]
Debug access policy approved	Production units have no exposed unauthenticated debug	[ ]
Power budget validated	Measured current matches model with margin	[ ]
Thermal model validated	Measured thermal data matches enclosure model	[ ]
PTP/TSN validated	Timing performance logged and repeatable	[ ]
NVMe endurance policy validated	Write amplification and thermal behavior acceptable	[ ]
Manufacturing test fixture defined	Pogo pads, scripts, pass/fail thresholds complete	[ ]
Serialization/provisioning defined	Device identity, certificates, keys, and labels tracked	[ ]
Regulatory path defined	Wireless/EMC/security documentation plan exists	[ ]
Field update/recovery validated	Signed OTA and local recovery tested	[ ]

7. Open Decisions

Table

Decision	Options	Owner	Status
Exact Verdin iMX95 SKU	RAM/eMMC/Wi-Fi/TPM/temp grade variants	Hardware	[ ]
Ethernet physical layer	Dual RJ45 1000BASE-T vs 1000BASE-T1	Hardware/System	[ ]
TPM location	Verdin-integrated if available vs carrier-side	Security/Hardware	[ ]
ATECC608B provisioning	Factory provisioned vs in-house provisioned	Security/Ops	[ ]
NVMe size/form factor	2230 vs 2242, 256 GB to 2 TB	System/Ops	[ ]
Wireless requirement	Verdin Wi-Fi SKU vs no wireless vs carrier module	Product/Regulatory	[ ]
Input power	15 W USB-C PD only vs higher budget	Hardware/Product	[ ]
Enclosure	85 mm x 56 mm class vs larger passive chassis	Mechanical	[ ]

8. Pass/Fail Summary

Table

Section	Result	Notes
Procurement package	[ ] Pass / [ ] Fail
Pre-schematic gates	[ ] Pass / [ ] Fail
Power-up	[ ] Pass / [ ] Fail
BSP boot	[ ] Pass / [ ] Fail
Security	[ ] Pass / [ ] Fail
Storage	[ ] Pass / [ ] Fail
Ethernet/PTP	[ ] Pass / [ ] Fail
Wireless, if populated	[ ] Pass / [ ] Fail
Thermal	[ ] Pass / [ ] Fail
Production lock	[ ] Pass / [ ] Fail

Board Status: [ ] Ready for schematic capture / [ ] Ready for EVT build / [ ] Ready for production lock / [ ] Requires rework

Purpose
Baseline Decision
1. Procurement Package Checklist
1.1 Toradex Module and Development Hardware
1.2 Required Vendor Documentation
1.3 Carrier-Side Parts to Select
2. Pre-Schematic Design Gates
3. Procurement Release Gates
4. First-Article Bring-Up Equipment
5. First-Article Bring-Up Plan
5.1 Unpowered Inspection
5.2 Power-Up Sequence
5.3 Boot and BSP Validation
5.4 Security Bring-Up
5.5 Storage Bring-Up
5.6 Ethernet and Timing Bring-Up
5.7 Wireless Bring-Up, If Populated
5.8 Thermal Validation
6. Production Lock Checklist
7. Open Decisions
8. Pass/Fail Summary