Accordion M1
ESH10000597 · Rev R1
in_progresselectronics
Accordion M1 main board — R1. Successor to R0 prototype (id=13). USB-C PD 20V input, TPS259474 E-Fuse protection, regulated outputs 5V/12V/3.3V/2.5V/1.8V/2.5VREF. Module connectors: SO-DIMM (J9), M2 (J15), N-Top (J10/J11/J12), Comtop (J3). I2C bus mux, ADC monitoring, fan control, LED driver, RTC. Hammond enclosure.
0%
Coverage
0%
Done
0
Requirements
42
Test Cases
1
Open Entries
| Relation | Project |
|---|---|
| Successor of | ESH10000597 R0 — Accordion M1 |
Timeline
Color = derived gate state · hover a tile for its note.not started
🏁 Release
Status & gates
Chronological — Release is the final gate. Derived & read-only; edit viaplease_milestone_* tools.Release / Readiness not started 3/6 met
pending Requirements approved
- REQ-001: draft
- REQ-010: draft
- REQ-017: draft
- REQ-002: draft
- REQ-009: draft
- REQ-018: draft
- REQ-003: draft
- REQ-011: draft
- REQ-004: draft
- REQ-012: draft
pending Coverage ≥ 100%
- No requirements in scope
pending All test cases pass
- 0/42 passed
- 42 not yet run
met
No blocking issues open
met
Deviations resolved
met
Interfaces frozen
Test Cases
0 Pass
0 Fail / Deviated
0 N/A
42 Open0 / 42 Maestro impl.
Coverage — 0.0% · Done — 0.0%
| Code | Title | Category | Coverage | Status |
|---|---|---|---|---|
REQ-001 |
USB-C 20V PD primary power input | Functional | — | — |
REQ-002 |
E-Fuse U10 (VDD) OVLO trip point >21V | Functional | — | — |
REQ-003 |
E-Fuse U16 (5V) OVLO trip point >5.5V | Functional | — | — |
REQ-004 |
E-Fuse current limit 5A via R39 = 680Ω | Functional | — | — |
REQ-005 |
E-Fuse dVdT ramp configuration | Functional | — | — |
REQ-006 |
5V regulated rail stable under load | Performance | — | — |
REQ-007 |
3.3V regulated rail stable | Performance | — | — |
REQ-008 |
2.5V regulated rail stable | Performance | — | — |
REQ-009 |
1.8V regulated rail stable | Performance | — | — |
REQ-010 |
Precision voltage reference 2.500V | Performance | — | — |
REQ-011 |
5V to RPi via R147; Q8 circuit removed | Functional | — | — |
REQ-012 |
RPi 3V3 output routed as net RPI_ON | Interface | — | — |
REQ-013 |
[TBD] 12V rail inclusion decision | Functional | — | — |
REQ-014 |
[TBD] PoE input strategy decision | Functional | — | — |
REQ-015 |
Bulk capacitors fabricator-compatible | Manufacturing | — | — |
REQ-016 |
Push button S1 toggles system power on/off | Functional | — | — |
REQ-017 |
Power enable via pin-strap without MCU firmware | Functional | — | — |
REQ-018 |
[TBD] Push button / power-on MCU decision | Functional | — | — |
REQ-019 |
PCB fits and mounts in Hammond enclosure | Mechanical | — | — |
REQ-020 |
N-Top fixation screws no protrusion into SO-DIMM zone | Mechanical | — | — |
REQ-021 |
SO-DIMM connector J9 seats with latch engagement | Mechanical | — | — |
REQ-022 |
M2 slot J15 seats and screws correctly | Mechanical | — | — |
REQ-023 |
Comtop connector J3 seats correctly | Mechanical | — | — |
REQ-024 |
Back panel fan screws no collision with PCB edge | Mechanical | — | — |
REQ-025 |
Standoff heights defined for both assembly variants | Mechanical | — | — |
REQ-026 |
RPi header no perceptible rattling when mated | Mechanical | — | — |
REQ-027 |
RPi connectors flush with or recessed behind front panel | Mechanical | — | — |
REQ-028 |
Panel break tab mouse bites on PCB side | Mechanical | — | — |
REQ-029 |
Silkscreen reads 'Accordion M1' | Functional | — | — |
REQ-030 |
U3 silkscreen pin-1 / polarity marker | Functional | — | — |
REQ-031 |
I2C devices 7-bit address annotated in schematic | Functional | — | — |
REQ-032 |
I2C bus mux channels Ch0–Ch4 functional | Functional | — | — |
REQ-033 |
R23 non-mounted to configure ADS7828 at 0x49 | Functional | — | — |
REQ-034 |
UART GPIO routing per ESH10000539 R1 | Interface | — | — |
REQ-035 |
Pull-up resistors 4.7kΩ on UART nets at J9 | Functional | — | — |
REQ-036 |
T1DATA[0:95] bidirectional bus routes correctly | Interface | — | — |
REQ-037 |
SPI connectivity to SO-DIMM J9 functional | Interface | — | — |
REQ-038 |
UART connectivity to SO-DIMM J9 functional | Interface | — | — |
REQ-039 |
[TBD] MCU signals routed to module slots | Interface | — | — |
REQ-040 |
U24 voltage monitoring within ±5% of actual | Performance | — | — |
REQ-041 |
U24 current monitoring within ±10% of actual | Performance | — | — |
REQ-042 |
MON_12V and MON_5V dividers no ADC saturation | Functional | — | — |
REQ-043 |
Fan controller U21 regulates fan speed via I2C | Functional | — | — |
REQ-044 |
LED driver LP5012 controllable via I2C | Functional | — | — |
REQ-045 |
RTC and battery backup excluded from R1 | Functional | — | — |
REQ-046 |
≤40 unique component types per PCB side | Manufacturing | — | — |