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"0.3302": 3, "0.254": 2, "0.508": 3 } }, "drillDelta": { "0.635": { "a": 26, "b": 25 }, "0.3302": { "a": 1, "b": 3 }, "0.254": { "a": 0, "b": 2 } } }, "pads": { "a": 89, "b": 94, "added": [ "C168.1", "R102.2", "R71.2", "R92.2", "U29.1", "U29.10", "U29.9" ], "removed": [ "U27.1", "U27.10" ] }, "reroutedLengthMm": { "removed": 9.320086571, "added": 14.630902737 }, "viasMoved": { "removed": 3, "added": 6 }, "rerouted": true }, { "name": "XCVR_RXTX", "length": { "a": 73.512085105, "b": 113.114979605, "delta": 39.602894501, "perLayer": { "F.Cu": { "a": 12.849203943, "b": 17.873192252, "delta": 5.023988309 }, "B.Cu": { "a": 60.662881162, "b": 95.241787353, "delta": 34.578906192 } } }, "width": { "min": { "a": 0.2032, "b": 0.2032 }, "max": { "a": 0.2032, "b": 0.2032 }, "perLayer": {} }, "copperArea": { "a": 0, "b": 0, "delta": 0, "perLayer": {}, "note": "pour (region) area only" }, "vias": { "a": 2, "b": 6, "delta": 4, "drills": { "a": { "0.3302": 2 }, "b": { "0.254": 4, "0.3302": 2 } }, "drillDelta": { "0.254": { "a": 0, "b": 4 } } }, "pads": { "a": 3, "b": 6, "added": [ "R104.2", "R97.2", "U29.2" ], "removed": [] }, "reroutedLengthMm": { "removed": 0, "added": 39.602894501 }, "viasMoved": { "removed": 0, "added": 4 }, "rerouted": true } ] }, "outline": { "changed": false, "loops": { "a": 12, "b": 12 }, "bbox": { "a": [ 60, 100, 180, 175 ], "b": [ 60, 100, 180, 175 ] }, "size": { "a": [ 120, 75 ], "b": [ 120, 75 ] }, "perimeterMm": { "a": 389.936909795, "b": 389.936909795, "delta": 0 }, "areaMm2": { "a": 1462.593742325, "b": 1462.593742325, "delta": 0 }, "changedLengthMm": { "removed": 0, "added": 0 } }, "stackup": { "changed": false, "added": [], "removed": [], "modified": [], "reordered": false, "thickness": null }, "warnings": [] }, "bomDiff": { "summary": { "added": 0, "removed": 0, "qtyChanged": 5, "valueChanged": 0, "footprintChanged": 0, "mpnChanged": 0, "dnpToggled": 0, "categoryChanged": 0, "total": 5, "unchanged": 425 }, "added": [], "removed": [], "qtyChanged": [ { "kind": "qty-changed", "category": "SCH", "key": "mpn:grm155r61a104ka01d", "part": { "value": "100nF", "footprint": "hackrf:GSG-0402", "mpn": "GRM155R61A104KA01D", "manufacturer": "Murata" }, "qtyFrom": 60, "qtyTo": 61, "refsAdded": [ "C168" ], "refsRemoved": [], "refs": [ "C9", "C17", "C18", "C20", "C23", "C25", "C28", "C31", "C44", "C46", "C49", "C50", "C58", "C59", "C61", "C62", "C64", "C68", "C69", "C71", "C73", "C75", "C77", "C79", "C81", "C83", "C91", "C113", "C119", "C120", "C121", "C122", "C123", "C128", "C129", "C130", "C131", "C132", "C133", "C134", "C135", "C136", "C137", "C138", "C139", "C140", "C141", "C142", "C144", "C147", "C148", "C149", "C150", "C151", "C152", "C153", "C154", "C159", "C166", "C167", "C168" ] }, { "kind": "qty-changed", "category": "SCH", "key": "vf:dnp|gsg-0402", "part": { "value": "DNP", "footprint": "hackrf:GSG-0402" }, "qtyFrom": 4, "qtyTo": 6, "refsAdded": [ "R71", "R82" ], "refsRemoved": [], "refs": [ "L1", "L4", "L8", "R40", "R71", "R82" ] }, { "kind": "qty-changed", "category": "SCH", "key": "mpn:rmcf0402jt39r0", "part": { "value": "39", "footprint": "hackrf:GSG-0402", "mpn": "RMCF0402JT39R0", "manufacturer": "Stackpole" }, "qtyFrom": 31, "qtyTo": 32, "refsAdded": [ "R107" ], "refsRemoved": [], "refs": [ "R19", "R30", "R31", "R32", "R33", "R34", "R38", "R39", "R42", "R43", "R44", "R45", "R50", "R53", "R60", "R77", "R78", "R79", "R80", "R81", "R86", "R87", "R88", "R89", "R90", "R91", "R94", "R96", "R98", "R99", "R100", "R107" ] }, { "kind": "qty-changed", "category": "SCH", "key": "mpn:rmcf0402zt0r00", "part": { "value": "0", "footprint": "hackrf:GSG-0402", "mpn": "RMCF0402ZT0R00", "manufacturer": "Stackpole" }, "qtyFrom": 6, "qtyTo": 17, "refsAdded": [ "R70", "R83", "R84", "R92", "R95", "R97", "R101", "R102", "R103", "R104", "R106" ], "refsRemoved": [], "refs": [ "R20", "R21", "R22", "R23", "R57", "R58", "R70", "R83", "R84", "R92", "R95", "R97", "R101", "R102", "R103", "R104", "R106" ] }, { "kind": "qty-changed", "category": "SCH", "key": "mpn:74aup2g58gux", "part": { "value": "74AUP2G58GU", "footprint": "gsg-modules:XQFN10", "mpn": "74AUP2G58GUX", "manufacturer": "Nexperia" }, "qtyFrom": 3, "qtyTo": 4, "refsAdded": [ "U29" ], "refsRemoved": [], "refs": [ "U26", "U27", "U28", "U29" ] } ], "valueChanged": [], "footprintChanged": [], "mpnChanged": [], "dnpToggled": [], "categoryChanged": [], "byCategory": { "SCH": { "qtyChanged": 5 }, "PCB": {}, "BOARD_FEATURE": {} } }, "impacts": [ { "id": "39c328b5cad583a3", "kind": "cert", "scope": "board", "metric": "ipc6012.pBreakout", "before": 0.149, "after": 0.327, "delta": 0.178, "limit": { "value": "2", "kind": "band", "source": "IPC-6012 Class 2" }, "severity": "low", "why": "IPC-6012 Class 2: GCK2 via drill 0.3302 -> 0.254 mm; GND vias 233 -> 238; VCC vias 43 -> 46 - board breakout probability 0.149 -> 0.327 (+0.178), pre-check passes.", "causes": [ "layoutDiff.nets.changed[GCK2]", "layoutDiff.nets.changed[GND]", "layoutDiff.nets.changed[VCC]", "layoutDiff.nets.changed[XCVR_RXTX]" ], "assumptionDependent": true }, { "id": "6459605f3073c461", "kind": "bom", "ref": "C168", "category": "SCH", "metric": "qty", "before": 60, "after": 61, "delta": 1, "severity": "info", "why": "SCH line GRM155R61A104KA01D: C168 qty changed (qty 60 -> 61).", "causes": [ "bomDiff.qtyChanged[C168]" ], "assumptionDependent": false }, { "id": "cfeab595f69ae0e7", "kind": "bom", "ref": "R107", "category": "SCH", "metric": "qty", "before": 31, "after": 32, "delta": 1, "severity": "info", "why": "SCH line RMCF0402JT39R0: R107 qty changed (qty 31 -> 32).", "causes": [ "bomDiff.qtyChanged[R107]" ], "assumptionDependent": false }, { "id": "bf2721ec8e800e72", "kind": "bom", "ref": "R70", "refs": [ "R70", "R83", "R84", "R92", "R95", "R97", "R101", "R102", "R103", "R104", "R106" ], "category": "SCH", "metric": "qty", "before": 6, "after": 17, "delta": 11, "severity": "info", "why": "SCH line RMCF0402ZT0R00: R70, R83, R84, R92, R95, R97, R101, R102, R103, R104, R106 qty changed (qty 6 -> 17).", "causes": [ "bomDiff.qtyChanged[R101]", "bomDiff.qtyChanged[R102]", "bomDiff.qtyChanged[R103]", "bomDiff.qtyChanged[R104]", "bomDiff.qtyChanged[R106]", "bomDiff.qtyChanged[R70]", "bomDiff.qtyChanged[R83]", "bomDiff.qtyChanged[R84]", "bomDiff.qtyChanged[R92]", "bomDiff.qtyChanged[R95]", "bomDiff.qtyChanged[R97]" ], "assumptionDependent": false }, { "id": "9569fc7526c83697", "kind": "bom", "ref": "R71", "refs": [ "R71", "R82" ], "category": "SCH", "metric": "qty", "before": 4, "after": 6, "delta": 2, "severity": "info", "why": "SCH line DNP GSG-0402: R71, R82 qty changed (qty 4 -> 6).", "causes": [ "bomDiff.qtyChanged[R71]", "bomDiff.qtyChanged[R82]" ], "assumptionDependent": false }, { "id": "5a5a3439399712bf", "kind": "bom", "ref": "U29", "category": "SCH", "metric": "qty", "before": 3, "after": 4, "delta": 1, "severity": "info", "why": "SCH line 74AUP2G58GUX: U29 qty changed (qty 3 -> 4).", "causes": [ "bomDiff.qtyChanged[U29]" ], "assumptionDependent": false }, { "id": "dbecada061717f7e", "kind": "cert", "scope": "board", "metric": "ipc6012.findings", "before": 36, "after": 96, "delta": 60, "severity": "info", "why": "GCK2 via drill 0.3302 -> 0.254 mm; GND vias 233 -> 238; VCC vias 43 -> 46 - IPC-6012 findings 36 -> 96.", "causes": [ "layoutDiff.nets.changed[GCK2]", "layoutDiff.nets.changed[GND]", "layoutDiff.nets.changed[VCC]", "layoutDiff.nets.changed[XCVR_RXTX]" ], "assumptionDependent": false }, { "id": "e8e6c040e92b0632", "kind": "impedance", "net": "Net-(R103-Pad2)", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(R103-Pad2): new net; R103 added; R103 added to the 0 line (qty 6 -> 17); +4 more - Z0 on B.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R103]", "layoutDiff.components.added[R95]", "layoutDiff.components.added[U29]", "layoutDiff.nets.added[Net-(R103-Pad2)]" ], "assumptionDependent": true }, { "id": "9a3d385caa81977e", "kind": "impedance", "net": "Net-(R103-Pad2)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(R103-Pad2): new net; R103 added; R103 added to the 0 line (qty 6 -> 17); +4 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R103]", "layoutDiff.components.added[R95]", "layoutDiff.components.added[U29]", "layoutDiff.nets.added[Net-(R103-Pad2)]" ], "assumptionDependent": true }, { "id": "f33c8df0f728323a", "kind": "impedance", "net": "Net-(R107-Pad2)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(R107-Pad2): new net; R107 added; R107 added to the 39 line (qty 31 -> 32); +2 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R107]", "layoutDiff.components.added[U29]", "layoutDiff.nets.added[Net-(R107-Pad2)]" ], "assumptionDependent": true }, { "id": "6e0ec8c0a96f6989", "kind": "impedance", "net": "Net-(R31-Pad2)", "layer": "F.Cu", "metric": "z0Ohm", "before": 58.68, "after": 64.79, "delta": 6.11, "severity": "info", "why": "Net-(R31-Pad2): renamed from Net-(P1-Pad1); rerouted (4.797 mm new copper); F.Cu width 0.254 -> 0.2032-0.254 mm; +6 more - Z0 on F.Cu 58.68 ohm -> 64.79 ohm (+6.11), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[P1]", "layoutDiff.components.moved[R31]", "layoutDiff.components.moved[R60]", "layoutDiff.components.moved[U22]", "layoutDiff.nets.changed[Net-(R31-Pad2)]" ], "assumptionDependent": true }, { "id": "45fc806ba8fae902", "kind": "impedance", "net": "Net-(U27-Pad1)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(U27-Pad1): new net; R101 added; R101 added to the 0 line (qty 6 -> 17); +7 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R101]", "layoutDiff.components.added[R92]", "layoutDiff.components.added[R95]", "layoutDiff.components.added[R97]", "layoutDiff.components.moved[U27]", "layoutDiff.nets.added[Net-(U27-Pad1)]" ], "assumptionDependent": true }, { "id": "994af84e0c7debbb", "kind": "impedance", "net": "Net-(U27-Pad2)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(U27-Pad2): new net; R83 added; R83 added to the 0 line (qty 6 -> 17); +3 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R83]", "layoutDiff.components.added[R84]", "layoutDiff.components.moved[U27]", "layoutDiff.nets.added[Net-(U27-Pad2)]" ], "assumptionDependent": true }, { "id": "c405367bcc73935a", "kind": "impedance", "net": "Net-(U27-Pad5)", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(U27-Pad5): new net; R102 added; R102 added to the 0 line (qty 6 -> 17); +7 more - Z0 on B.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R102]", "layoutDiff.components.added[R103]", "layoutDiff.components.added[R104]", "layoutDiff.components.added[R106]", "layoutDiff.components.moved[U27]", "layoutDiff.nets.added[Net-(U27-Pad5)]" ], "assumptionDependent": true }, { "id": "65d70d8f6b4f8946", "kind": "impedance", "net": "Net-(U27-Pad5)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(U27-Pad5): new net; R102 added; R102 added to the 0 line (qty 6 -> 17); +7 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R102]", "layoutDiff.components.added[R103]", "layoutDiff.components.added[R104]", "layoutDiff.components.added[R106]", "layoutDiff.components.moved[U27]", "layoutDiff.nets.added[Net-(U27-Pad5)]" ], "assumptionDependent": true }, { "id": "6a7000dd1faa4508", "kind": "impedance", "net": "Net-(U27-Pad7)", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "Net-(U27-Pad7): new net; R70 added; R70 added to the 0 line (qty 6 -> 17); +7 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.added[R70]", "layoutDiff.components.added[R71]", "layoutDiff.components.added[R82]", "layoutDiff.components.added[R83]", "layoutDiff.components.moved[U27]", "layoutDiff.nets.added[Net-(U27-Pad7)]" ], "assumptionDependent": true } ], "summary": { "counts": { "high": 0, "medium": 0, "low": 1, "info": 15 }, "headline": "16 impact(s) (1 low); worst: IPC-6012 Class 2: GCK2 via drill 0.3302 -> 0.254 mm; GND vias 233 -> 238; VCC vias 43 -> 46 - board breakout probability 0.149 -> 0.327 (+0.178), pre-check passes.", "markdown": "**16 impact(s) (1 low); worst: IPC-6012 Class 2: GCK2 via drill 0.3302 -> 0.254 mm; GND vias 233 -> 238; VCC vias 43 -> 46 - board breakout probability 0.149 -> 0.327 (+0.178), pre-check passes.** Layout: components: 16 added, 12 moved, 4 rotated; nets: 6 added, 2 renamed, 2 changed, 12 rerouted. BOM: 5 changed quantity. Re-analysed on both revisions, for the changed nets and parts only: impedance, cert, returnPath. LOW: IPC-6012 Class 2: GCK2 via drill 0.3302 -> 0.254 mm; GND vias 233 -> 238; VCC vias 43 -> 46 - board breakout probability 0.149 -> 0.327 (+0.178), pre-check passes. Not run for missing inputs: cert.creepage (see refused). Rows marked assumptionDependent rest on ledgered typical values." }, "analysed": { "ran": [ "impedance", "cert", "returnPath" ], "nets": [ "AD_CLK", "FSX2_CLK", "GCK1", "GCK2", "GND", "Net-(C159-Pad2)", "Net-(R103-Pad2)", "Net-(R107-Pad2)", "Net-(R31-Pad2)", "Net-(R32-Pad2)", "Net-(R94-Pad2)", "Net-(U27-Pad1)", "Net-(U27-Pad2)", "Net-(U27-Pad5)", "Net-(U27-Pad7)", "SGPIO_CLK", "SSP1_SCK", "VAA", "VCC", "XCVR_RXTX" ], "rails": [] }, "assumptions": { "before": [ { "source": "default", "analysis": "impedance", "key": "mask.er", "value": 3.8, "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)", "verified": false, "affects": [ "outer-layer traces" ] }, { "source": "derived", "analysis": "impedance", "key": "no_target", "value": "no impedance targets (netClasses / .kicad_pro)", "affects": [ "every row: status no_target" ] }, { "source": "default", "analysis": "cert", "key": "fab", "value": "jlcpcb", "citation": "fab profile jlcpcb (NativeCAD default)", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "ipc6012.drillPositionTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.innerRegistrationTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.outerRegistrationTolMm", "value": 0.05, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipcClass", "value": "2", "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "motC", "value": 105, "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)", "verified": false, "affects": [], "unit": "C" }, { "source": "default", "analysis": "returnPath", "key": "erEff", "value": 4, "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)", "verified": false, "affects": [] }, { "source": "derived", "analysis": "returnPath", "key": "planes", "value": [ "In1.Cu:GND", "In2.Cu:VCC" ], "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles", "affects": [ "every finding" ] }, { "source": "default", "analysis": "returnPath", "key": "riseTimeNs", "value": 1, "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)", "verified": true, "affects": [], "unit": "ns" } ], "after": [ { "source": "default", "analysis": "impedance", "key": "mask.er", "value": 3.8, "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)", "verified": false, "affects": [ "outer-layer traces" ] }, { "source": "derived", "analysis": "impedance", "key": "no_target", "value": "no impedance targets (netClasses / .kicad_pro)", "affects": [ "every row: status no_target" ] }, { "source": "default", "analysis": "cert", "key": "fab", "value": "jlcpcb", "citation": "fab profile jlcpcb (NativeCAD default)", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "ipc6012.drillPositionTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.innerRegistrationTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.outerRegistrationTolMm", "value": 0.05, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipcClass", "value": "2", "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "motC", "value": 105, "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)", "verified": false, "affects": [], "unit": "C" }, { "source": "default", "analysis": "returnPath", "key": "erEff", "value": 4, "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)", "verified": false, "affects": [] }, { "source": "derived", "analysis": "returnPath", "key": "planes", "value": [ "In1.Cu:GND", "In2.Cu:VCC" ], "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles", "affects": [ "every finding" ] }, { "source": "default", "analysis": "returnPath", "key": "riseTimeNs", "value": 1, "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)", "verified": true, "affects": [], "unit": "ns" } ] }, "refused": { "before": [ { "analysis": "cert.creepage", "reasonCode": "pcb_analysis_needs_input", "needs": [ "cert.pairs[].a", "cert.pairs[].b", "cert.pairs[].workingVrms" ], "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them", "requested": false } ], "after": [ { "analysis": "cert.creepage", "reasonCode": "pcb_analysis_needs_input", "needs": [ "cert.pairs[].a", "cert.pairs[].b", "cert.pairs[].workingVrms" ], "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them", "requested": false } ] } } }