{ "schema_version": 2, "project": "phonev2", "revision": "rev-a-concept", "stock_policy": { "minimum_units": 100, "maximum_age_days": 7 }, "connector_protection": { "required": true, "scope": [ "external connectors", "internal plug/socket connectors", "pogo contacts", "removable FPC connections" ], "placement": "at each board boundary, adjacent to the connector and before branches", "selection_requirements": [ "working voltage", "clamp voltage and current", "leakage current", "parasitic capacitance", "package and footprint", "declared ESD test standard", "live LCSC stock of at least 100 units" ], "interface_rules": { "USB": "ultra-low-capacitance protection on D+, D-, CC1, CC2, and populated service pins; separate VBUS TVS/OVP", "SIM": "low-capacitance protection on SIM_IO, SIM_CLK, and SIM_RST beside the socket", "CAN FD": "bidirectional CAN FD suppressor compatible with transceiver common-mode and fault range", "SPI/I2C/I2S/UART/GPIO/FPC": "voltage-, leakage-, and capacitance-qualified ESD array", "TRRS/audio": "low-leakage audio ESD protection", "RF": "no generic data-line TVS; use only RF-qualified protection justified by reference design and measured loss" } }, "boards": [ { "id": "core-r", "name": "CORE-R", "kind": "rigid", "layers": 4, "outline_status": "unresolved", "outline_source": "../PhoneV2_concept.FCStd", "role": "ESP32-S31 HP/LP compute, memory, LoRa RF, GNSS, PhoneBus host, Ethernet MAC, and USB host", "stackup_intent": [ "L1 components, RF, and high-speed", "L2 uninterrupted ground", "L3 power polygons and low-speed signals", "L4 signals and stitched ground" ] }, { "id": "lte-power-r", "name": "LTE/POWER-R", "kind": "rigid", "layers": 4, "outline_status": "unresolved", "outline_source": "../PhoneV2_concept.FCStd", "role": "LTE, SIM, charging, power path, regulators, battery, and USB-C" }, { "id": "ui-audio-r", "name": "UI/AUDIO-R", "kind": "rigid", "layers": 4, "outline_status": "unresolved", "outline_source": "../PhoneV2_concept.FCStd", "role": "audio codec and amplifier, controls, GPIO expansion, e-ink, and camera connectors" }, { "id": "light-r", "name": "LIGHT-R", "kind": "aluminum-core", "layers": 2, "outline_status": "unresolved", "outline_source": "../PhoneV2_concept.FCStd", "role": "high-CRI flashlight LEDs and temperature sensing" }, { "id": "phonebus-f", "name": "PHONEBUS-F", "kind": "static-flex", "layers": 2, "outline_status": "unresolved", "outline_source": "../PhoneV2_concept.FCStd", "role": "CAN FD trunk, protected module power, and direct inter-board signals" } ], "components": [ { "ref": "U1", "board_id": "core-r", "manufacturer": "Espressif", "mpn": "ESP32-S31-WROOM-1-N16R32V", "lcsc": "UNRESOLVED", "status": "sourcing_blocked", "sourcing_gate": { "state": "SOURCE_GATE_LIVE_STOCK_UNVERIFIED", "minimum_units": 100, "checked_at": "2026-09-26", "result": "Exact PCB-antenna WROOM-1-N16R32V procurement is blocked until a live LCSC SKU with at least 100 units is verified. No -1U external-antenna variant is permitted.", "freeze_allowed": false, "purchase_allowed": false }, "evidence": [ { "type": "datasheet", "url": "https://documentation.espressif.com/esp32-s31-wroom-1_wroom-1u_datasheet_en.pdf", "revision": "v0.5 PRELIMINARY", "pages": "1, 3-4, 14, 64, 67-68", "retrieved_at": "2026-09-26T05:46:59Z", "sha256": "c4ac564837a878a2087863ebacf9e8e08e32109d67d3ffabd8dbe5892e5401e8" }, { "type": "hardware_guide", "url": "https://docs.espressif.com/projects/esp-hardware-design-guidelines/en/latest/esp32s31/index.html", "revision": "v0.2", "pages": "27", "retrieved_at": "2026-09-26T05:37:40Z" } ] }, { "ref": "U3", "board_id": "core-r", "manufacturer": "Semtech", "mpn": "LR1121IMLTRT", "lcsc": "C7498014", "status": "evidence_grounded", "stock": { "units": 1302, "checked_at": "2026-09-22", "source_url": "https://www.lcsc.com/product-detail/C7498014.html" }, "evidence": [ { "type": "datasheet", "url": "https://www.semtech.com/products/wireless-rf/lora-connect/lr1121" } ] }, { "ref": "U4", "board_id": "lte-power-r", "manufacturer": "SIMCom", "mpn": "A7683E", "lcsc": "C20617360", "status": "evidence_grounded", "stock": { "units": 125, "checked_at": "2026-09-22", "source_url": "https://www.lcsc.com/product-detail/C20617360.html" }, "evidence": [ { "type": "hardware_guide", "url": "https://www.simcom.com/product/A7683E.html" } ] }, { "ref": "U5", "board_id": "core-r", "manufacturer": "Zhongkewei", "mpn": "ATGM336H-F8N76", "lcsc": "C46955980", "status": "evidence_grounded", "stock": { "units": 186, "checked_at": "2026-09-22", "source_url": "https://www.lcsc.com/product-detail/C46955980.html" }, "evidence": [ { "type": "datasheet", "url": "https://www.icofchina.com/daohang/duopin/2513.html" } ] }, { "ref": "U6", "board_id": "ui-audio-r", "manufacturer": "Everest Semiconductor", "mpn": "ES8389", "lcsc": "C22380673", "status": "evidence_grounded", "stock": { "units": 1849, "checked_at": "2026-09-22", "source_url": "https://www.lcsc.com/product-detail/C22380673.html" }, "evidence": [ { "type": "datasheet", "url": "http://www.everest-semi.com/pdf/ES8389%20PB.pdf" } ] }, { "ref": "U7", "board_id": "ui-audio-r", "manufacturer": "Nsiway", "mpn": "NS4150B", "lcsc": "C189961", "status": "proposed", "stock": { "units": 144235, "checked_at": "2026-09-22", "source_url": "https://www.lcsc.com/product-detail/C189961.html" }, "evidence": [ { "type": "supplier_record", "url": "https://www.lcsc.com/product-detail/C189961.html" } ] }, { "ref": "U8", "board_id": "core-r", "manufacturer": "Texas Instruments", "mpn": "TCA9555PWR", "lcsc": "C465732", "status": "evidence_grounded", "stock": { "units": 39487, "checked_at": "2026-09-25", "source_url": "https://www.lcsc.com/product-detail/C465732.html" }, "evidence": [ { "type": "datasheet", "url": "https://www.ti.com/lit/gpn/TCA9555" } ] }, { "ref": "U9", "board_id": "core-r", "manufacturer": "Texas Instruments", "mpn": "TCAN3413DR", "lcsc": "C22433320", "status": "evidence_grounded", "stock": { "units": 13674, "checked_at": "2026-09-25", "source_url": "https://www.lcsc.com/product-detail/C22433320.html" }, "evidence": [ { "type": "datasheet", "url": "https://www.ti.com/lit/gpn/TCAN3413" } ] }, { "ref": "U10", "board_id": "ui-audio-r", "manufacturer": "Texas Instruments", "mpn": "TCA9555PWR", "lcsc": "C465732", "status": "evidence_grounded", "stock": { "units": 39487, "checked_at": "2026-09-25", "source_url": "https://www.lcsc.com/product-detail/C465732.html" }, "evidence": [ { "type": "datasheet", "url": "https://www.ti.com/lit/gpn/TCA9555" } ] } ], "blocks": [ { "id": "compute-and-storage", "board_id": "core-r", "status": "provisional_sourcing_blocked", "components": ["U1"], "interfaces": ["module-integrated 16 MB Quad-SPI flash", "module-integrated 32 MB Octal PSRAM", "on-board PCB antenna", "Wi-Fi 6 2.4 GHz", "Bluetooth 5.4 LE + Classic", "IEEE 802.15.4", "USB Serial/JTAG", "USB 2.0 HS OTG", "EMAC", "CAN FD"] }, { "id": "mesh-radio", "board_id": "core-r", "status": "proposed", "components": ["U3"], "interfaces": ["SPI2", "DIO wake", "430-510 MHz RF", "780-930 MHz RF", "mandatory 1.55 GHz L-band RF", "mandatory 1.9-2.1 GHz S-band RF", "mandatory 2.4 GHz LoRa RF"] }, { "id": "phonebus-host", "board_id": "core-r", "status": "proposed", "components": ["U8", "U9"], "interfaces": ["native CAN FD TX/RX", "CAN_H", "CAN_L", "standby/wake", "local slow-control expansion"] }, { "id": "lte", "board_id": "lte-power-r", "status": "proposed", "components": ["U4"], "interfaces": ["UART RTS/CTS", "USB test", "SIM", "LTE RF", "3V8 switched power"] }, { "id": "positioning", "board_id": "core-r", "status": "proposed", "components": ["U5"], "interfaces": ["UART", "PPS", "L1/L5 RF", "switched 3V3"] }, { "id": "audio-and-controls", "board_id": "ui-audio-r", "status": "proposed", "components": ["U6", "U7", "U10"], "interfaces": ["I2S", "HP I2C", "GPIO interrupt", "eight-microphone array", "TRRS", "speaker", "ANO", "e-ink", "camera"], "microphone_array": { "count": 8, "beamforming": "LOCAL_ON_ESP32_S31", "status": "REQUIRED", "unresolved": [ "exact microphone MPN", "array geometry and acoustic port placement", "digital or analog capture topology", "clocking and channel aggregation", "measured DSP compute, memory, latency, and power budget" ] } } ], "interfaces": [ { "id": "phonebus-canfd", "transport": "CAN FD", "board_ids": ["core-r", "phonebus-f"], "signals": ["CAN_H", "CAN_L", "WAKE", "MODULE_EN", "MODULE_DETECT", "FAULT"], "connector_protection": "required_at_each_connector_boundary" }, { "id": "core-ui-direct", "transport": "direct over PHONEBUS-F", "board_ids": ["core-r", "phonebus-f", "ui-audio-r"], "signals": ["SPI2", "HP I2C", "I2S", "UI_IRQ", "control power"], "connector_protection": "required_at_each_connector_boundary" }, { "id": "core-lte-direct", "transport": "direct over PHONEBUS-F", "board_ids": ["core-r", "phonebus-f", "lte-power-r"], "signals": ["LTE UART RTS/CTS", "LTE power/status", "USB Serial/JTAG"], "connector_protection": "required_at_each_connector_boundary" }, { "id": "light-power-control", "transport": "power and slow control", "board_ids": ["lte-power-r", "phonebus-f", "light-r"], "signals": ["LED power", "LED enable/PWM", "NTC sense"], "connector_protection": "required_at_each_connector_boundary" }, { "id": "service-bay-ethernet", "transport": "external Ethernet through power-gated PHY and magnetics", "board_ids": ["core-r", "phonebus-f", "lte-power-r"], "signals": ["EMAC RGMII or RMII", "MDIO/MDC", "PHY reset/interrupt", "switched PHY rail", "8P8C magnetics", "shield/ESD return"], "connector_protection": "required_at_each_connector_boundary", "status": "UNRESOLVED_RGMII_VS_RMII" }, { "id": "service-bay-usb-a-host", "transport": "USB 2.0 HS OTG host", "board_ids": ["core-r", "phonebus-f", "lte-power-r"], "signals": ["dedicated USB_DP", "dedicated USB_DM", "current-limited switched 5V VBUS", "VBUS discharge", "overcurrent/fault", "host-role detection"], "connector_protection": "required_at_each_connector_boundary", "status": "UNRESOLVED_EXACT_POWER_AND_PROTECTION_PARTS" } ], "system_resources": { "esp32_s31": { "ordering_code": "ESP32-S31-WROOM-1-N16R32V", "embedded_chip": "ESP32-S31NRV32", "datasheet_status": "PRELIMINARY v0.5", "module": "ESP32-S31-WROOM-1 with on-board PCB antenna; -1U/external-antenna variants forbidden", "dimensions_mm": [18.0, 25.5, 3.1], "programmable_gpio_total": 54, "lp_gpio_total": 8, "chip_programmable_gpio_total": 60, "hp_cpu": "dual RV32IMAFC up to 320 MHz with Sv32", "lp_cpu": "single RV32IMAC up to 40 MHz", "hp_sram_kb": 512, "lp_sram_kb": 32, "module_flash_mb": 16, "module_psram_mb": 32, "usb_hs_otg_module_pads": {"DM": 54, "DP": 55}, "usb_serial_jtag_gpio": [33, 34], "controllers": { "general_purpose_spi": 2, "lp_spi": 1, "uart": 4, "lp_uart": 1, "i2c": 2, "lp_i2c": 1, "i2s": 2, "can_fd": 1, "usb_2_hs_otg": 1, "usb_serial_jtag": 1, "ethernet_mac_10_100_1000": 1, "sd_mmc_host_slots": 2, "lcd_camera_dvp": 1 }, "allocation_status": "unresolved", "notes": [ "RGMII consumes designated GPIO8-GPIO19; RMII consumes designated GPIO8, GPIO9, GPIO12, GPIO13, GPIO15, GPIO18 and GPIO19", "GP-SPI2 eight-line IO MUX overlaps GPIO9-GPIO19 and therefore conflicts with EMAC high-speed allocations", "USB 2.0 HS OTG uses dedicated package pins 44/45; USB Serial/JTAG separately uses GPIO33/34", "exact pins remain UNRESOLVED pending complete strapping, boot, power-domain, RF, Ethernet, USB, camera, SD/MMC and sleep-state review" ], "rf_placement": { "preferred": "Place PCB-antenna end beyond host PCB edge", "recessed_exception": "Cut away host PCB below and on both sides of antenna; keep feed near board edge; never center module in a four-sided moat", "housing_clearance_mm_all_directions": 15, "external_antenna_connector": "FORBIDDEN" }, "evaluation_only_fallback": { "mpn": "ESP32-S31-WROOM-3-N16R16V", "lcsc": "C55371223", "stock_units": 0, "stock_checked_at": "2026-09-26T05:46:59Z", "source_url": "https://www.lcsc.com/product-detail/C55371223.html", "status": "BUY_LINKED_EVALUATION_ONLY_NOT_FOOTPRINT_COMPATIBLE", "production_substitute_allowed": false } } }, "software_domains": { "status": "PROVISIONAL_CONTRACT", "boot_profiles": ["LP_ONLY", "HP_ESP_IDF", "HP_LINUX_EXPERIMENTAL"], "lp_always_on": { "budget": "40 MHz RV32IMAC and 32 KB LP SRAM", "owns": ["PMU/deep sleep and wake policy", "RTC and watchdog", "battery/charger telemetry and safety", "buttons and ANO", "minimal e-ink status through LP-capable IO", "safe RGB/status", "fault handling", "LP-HP mailbox endpoint"], "must_work_with_hp_off": true, "full_radio_or_network_stacks": "NOT_ASSUMED" }, "hp_esp_idf": { "support_state": "PRODUCT_BASELINE_TARGET_SUPPORT_PREVIEW", "evidence": "ESP-IDF v6.1 final identifies ESP32-S31 support as preview; no production-support claim", "owns": ["Wi-Fi/Bluetooth/802.15.4", "LoRa LR1121 bulk and timing-sensitive work", "PhoneBus CAN FD", "GNSS", "LTE UART/PPP", "audio", "full e-ink rendering", "camera", "storage", "Ethernet", "USB host"] }, "hp_linux": { "support_state": "EXPERIMENTAL_BLOCKED", "role": "bounded on-demand POSIX jobs only; checkpoint and cleanly shut down afterward", "candidate_owners": ["Ethernet MAC/PHY", "USB host and storage", "SD/MMC filesystem", "camera/JPEG/PPA", "high-throughput TLS/networking", "optional compute jobs"], "release_gates": ["repeatable signed boot", "exact RAM and flash budget", "supported toolchain/kernel/BSP", "device tree", "required drivers", "LP-HP lifecycle", "suspend/resume/shutdown", "crash recovery", "measured energy budget"] }, "simultaneous_linux_and_esp_idf_on_hp_cores": "UNRESOLVED_NO_SUPPORTED_AMP_EVIDENCE", "rpc": { "mailbox": "sixteen 32-bit control registers; never bulk transport", "protocol": "versioned commands/events with request ID, boot-generation ID, deadline, timeout, cancellation and explicit terminal status", "bulk_transport": "shared-memory rings with producer/consumer ownership, bounds, cache-coherency rules and crash reinitialization", "recovery": "LP watchdog rejects stale generations, revokes ownership and returns to a safe LP-only state after HP crash or timeout" } }, "unresolved": [ "Archive exact manufacturer PDFs and hashes for every selected part", "SOURCE GATE: qualify exact ESP32-S31-WROOM-1-N16R32V with a live LCSC SKU and at least 100 units; no PCB freeze or purchase before this gate; WROOM-3-N16R16V is evaluation-only and not footprint-compatible", "Freeze the complete ESP32-S31-WROOM-1-N16R32V module pin assignment after power, strapping, module flash/PSRAM, RF placement, RGMII/RMII, USB, camera, SD/MMC, LP-IO and sleep-state analysis", "Choose RGMII 1 Gb/s versus lower-power RMII 100 Mb/s after pin, power, thermal, PHY-stock and measured-workload comparison; select exact PHY, magnetics/RJ45, clocking, protection and power switch", "Select exact USB-A host receptacle, current-limited VBUS switch, discharge, overcurrent handling, ESD and role-detection circuitry; keep USB-C as separate charge/device/debug", "Prove the LP minimal e-ink path, IO reachability and 32 KB code/data budget with HP off", "Resolve the official-document inconsistency in LP-I2C GPIO6/GPIO7 SCL/SDA mapping before assigning those module pads", "Define and test LP-HP shared-memory cache coherency, ownership, timeout, cancellation, boot-generation and crash recovery semantics", "Keep HP Linux experimental until the signed-boot, BSP/toolchain, memory, DT, driver, lifecycle, recovery and measured-energy gates pass", "Treat simultaneous Linux and ESP-IDF on separate HP cores as unsupported and UNRESOLVED unless Espressif publishes a supported AMP design", "Verify ES8389 clocking without a dedicated MCLK and preserve an optional test path until proven", "Select charger, power-path, regulators, protection, and exact 18650", "Select interface-specific USB, SIM, CAN FD, audio, and low-capacitance digital ESD/TVS parts for every connector boundary", "Select e-ink, camera, microphones, speaker, antennas, and connectors", "Select the satellite NTN operator and freeze its exact L/S-band channels, RF filters, certification, and service requirements", "Re-evaluate CORE-R dimensions, placement, thermal and RF assumptions for the 18.0 x 25.5 x 3.1 mm WROOM-1 module and >=15 mm housing antenna clearance without editing concurrently owned mechanical artifacts", "Apply the captive gasketed service-bay cap, connector insertion/removal sweeps, retention, compression stops, drainage/water path and clearances in the follow-up mechanical task; do not claim an IP rating before tests", "Define reviewed reference-circuit patterns before generating RF, LTE, power, or analog-audio schematics" ] }