Project Startup Help
Thought for 5 mins 28 sec
They’re still running. I’ll check final status once more and then give you the project links and current state so you’re not blocked waiting.
Worked for 21 sec
Created two separate PCB projects and started the split/place work in each:
- TX board: /timbochu/munkrofon-tx-pcb
- RX board: /timbochu/munkrofon-rx-pcb
Current status:
- TX clone: RX circuitry removed, board-mounted XLR replaced with compact XLR harness pads, 25 × 80 mm / 4-layer target set, placement still running.
- RX clone: TX circuitry removed, board-mounted XLR replaced with compact XLR harness pads, 25 mm width / 4-layer target set, placement still running.
- Master project remains unchanged as the system/reference design.
Open item:
- Both split-placement tasks are still running; they exceeded the wait window but are actively working on non-RF placement and verification.
Next step:
- Open each project link later to review the completed thread result, or ask me to check their status again.
Check split projects
Check TX status
Check RX status
Fix failed split tasks
Compare split BOMs
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Ask about this doc
Phase 2 Engineering Review Plan — Munkrofon
Status
Active review plan. No PCB placement or routing should begin until the review deliverables below are complete, unless a review identifies a necessary schematic correction.
Baseline
- Current schematic: Prototype Revision A, 94 components, 80 nets.
- Current status: exploratory schematic exists; not production validated.
- Master requirements: @munkrofon-engineering-requirements-specification-v1p0.
Objective
Move Munkrofon from exploratory prototype toward engineering-quality prototype by validating, challenging, and improving the existing architecture without restarting from scratch.
Optimization priority:
- Reliability
- Audio performance
- RF performance
- Manufacturability
- Serviceability
- Battery runtime
Required Deliverables
Table
| Deliverable | Purpose | Output file/status |
|---|---|---|
| Engineering Review Report | Challenge complete architecture and major design choices. | Pending |
| Updated Architecture Recommendations | State keep/change/remove decisions for each subsystem. | Pending |
| Power-State Diagram | Define Off, USB connected, Charging, Idle, Paired, Streaming, Low battery, Sleep, Shutdown. | Pending |
| System Block Diagram | Concise audio and power diagrams. | Included in ERS; may be expanded in review. |
| Component Comparison Matrix | Compare RF module, codec, mic preamp, line driver, charger, fuel gauge, regulators. | Pending |
| Risk Register | Track RF, audio, power, manufacturing, compliance, and service risks. | ERS has initial risk table; expanded register pending. |
| Prioritized Design Change List | High / Medium / Low schematic and documentation changes. | Pending |
| Updated Production Readiness Checklist | Define exactly what blocks production intent. | Pending |
Review Scope by Subsystem
Table
| Subsystem | Current Rev A choice | Review questions |
|---|---|---|
| RF module | RTX1090R1 provisional | Confirm lifecycle, price, availability, SDK, licensing, reference layout, antenna, and exact codec interface. |
| Microphone preamp | THAT1580 | Compare THAT1580, THAT1512, INA217-class, INA333, and other pro mic preamps. |
| Codec / ADC / DAC | TLV320AIC3204 | Compare TI, Cirrus Logic, Analog Devices, AKM, ESS options for latency, SNR, control, package, supply, availability. |
| Balanced output | THAT1646 | Confirm output level, headroom, supply rails, noise, mixer compatibility, protection. |
| Charger / power path | BQ24074 | Check heat, power-state behavior, USB behavior, RF/audio noise, simplification options. |
| Fuel gauge | MAX17048 | Decide keep/remove based on UX and firmware ownership. |
| Regulators / rails | AP2112K 3.3 V, TPS65131 ±5 V | Review efficiency, noise, component count, and alternatives. |
| USB-C | Charging-only with protected D+/D− | Decide whether USB data/debug/update is required. |
| Clocking | Provisional RF/codec mapping | Define clock master/slave, sample rate, jitter risk, and exact Sheerlink requirements. |
| Power distribution | Separate TX/RX rails | Review current draw, load margins, startup sequencing, and ERC missing-power findings. |
Immediate Known Review Issues
- RTX1090R1 public datasheet does not publish exact Sheerlink codec pin mapping.
- Antenna placeholders AE1–AE4 are not production antenna layouts.
- Remaining ERC missing-power findings need formal classification before next schematic revision.
- ±5 V split rails may be oversized/noisy/inefficient for final design but are justified by current audio IC choices.
- MAX17048 fuel gauge may be unnecessary if simple battery indication is enough.
- XLR input/output protection against RFI, ESD, and phantom-power abuse needs a dedicated review.
Next Recommended Work Order
- Architecture and component review report.
- Power-state diagram and updated power budget using RTX1090 public current data.
- Codec/preamp/line-driver comparison matrix.
- Risk register and prioritized design-change list.
- Apply necessary schematic corrections.
- Only then proceed to schematic cleanup, board outline, stackup, placement, and routing.
Status
Baseline
Objective
Required Deliverables
Review Scope by Subsystem
Immediate Known Review Issues
Next Recommended Work Order
