{"product_id":"timehatv5","title":"Raspberry Pi 5 PCIe HAT with I226 NIC (TimeHATv5)","description":"\u003ch2\u003eRaspberry Pi 5 PCIe HAT with I226 NIC — TimeHATv5\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote: This is the v5 hardware revision.\u003c\/strong\u003e The OCP M.2 GNSS slot is present on the board but is \u003cstrong\u003enot functional\u003c\/strong\u003e on this version. If you need GNSS support, please see the \u003ca href=\"\/products\/raspberry-pi-5-pcie-hat-with-i226-nic-timehat\"\u003eTimeHATv6\u003c\/a\u003e ($200).\u003c\/p\u003e\n\n\u003cp\u003eThe TimeHATv5 brings precision timing and advanced network functionality to the Raspberry Pi 5. Leveraging the PCIe interface via an FPC connection, it integrates a high-performance Intel I226 Ethernet NIC, precise timing inputs and outputs via SMA connectors, and a built-in TCXO for enhanced timing stability. It's a powerful tool for building small form-factor PTP (Precision Time Protocol) clients — ideal for time-sensitive networking applications.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003ev5 vs v6 — What's Different?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTimeHATv5 (this product, $140):\u003c\/strong\u003e I226 NIC, SMA timing ports, TCXO — GNSS slot is \u003cstrong\u003enot usable\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/raspberry-pi-5-pcie-hat-with-i226-nic-timehat\"\u003eTimeHATv6\u003c\/a\u003e ($200):\u003c\/strong\u003e All v5 features plus a fully functional OCP M.2 GNSS slot for satellite-disciplined timekeeping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTimeHATv5\u003c\/li\u003e\n  \u003cli\u003e40-pin spacer\u003c\/li\u003e\n  \u003cli\u003e16-pin FPC PCIe cable\u003c\/li\u003e\n  \u003cli\u003eSpacers, nuts, and screws for mounting to Raspberry Pi 5\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003ch4\u003eI226 Ethernet NIC\u003c\/h4\u003e\n\u003cp\u003eThe HAT features an Intel I226 NIC connected to the Raspberry Pi 5 over the PCIe interface, delivering fast, reliable Ethernet connectivity — perfect for applications requiring high-speed networking combined with precise timing.\u003c\/p\u003e\n\n\u003ch4\u003ePrecision Timing via SMA Ports\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMA Input (SDP1 on I226):\u003c\/strong\u003e Receive a 1PPS signal to discipline the NIC's internal clock.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMA Output (SDP0 on I226):\u003c\/strong\u003e Output a 1PPS signal from the NIC to synchronize external equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpare U.FL (SDP3 on I226):\u003c\/strong\u003e Raw unbuffered connection usable as input or output. \u003cem\u003eWarning: This is also a strapping pin — connecting it at boot may affect Ethernet functionality.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eBuilt-in TCXO\u003c\/h4\u003e\n\u003cp\u003eA high-precision Temperature-Compensated Crystal Oscillator (TCXO) ensures timing stability even during network loss, and allows tighter disciplining parameters to reduce PTP timing jitter. Stability: ±280 ppb across temperature.\u003c\/p\u003e\n\n\u003ch4\u003eOCP M.2 GNSS Slot — Not Functional on v5\u003c\/h4\u003e\n\u003cp\u003eThe M.2 slot is physically present on the board but is \u003cstrong\u003enot usable on this hardware revision\u003c\/strong\u003e. For GNSS support, please upgrade to the \u003ca href=\"\/products\/raspberry-pi-5-pcie-hat-with-i226-nic-timehat\"\u003eTimeHATv6\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePTP Client or Grandmaster:\u003c\/strong\u003e Synchronize network devices with sub-microsecond accuracy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1PPS Signal Measurement:\u003c\/strong\u003e Measure and verify 1PPS signals for precise timekeeping.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEdge Networking:\u003c\/strong\u003e Deploy in edge computing environments where precise timing is critical.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHome Labs:\u003c\/strong\u003e Create a PTP client network for your home lab with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResearch \u0026amp; Development:\u003c\/strong\u003e Experiment with PTP and timing protocols in various network configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eResources\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/github.com\/Time-Appliances-Project\/TimeHAT\" target=\"_blank\"\u003eTimeHAT GitHub Repo\u003c\/a\u003e — setup documentation, discussions, and issues\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/github.com\/geerlingguy\/time-pi\" target=\"_blank\"\u003eJeff Geerling's time-pi GitHub Repo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor full setup and usage instructions (linuxptp, testptp, 1PPS configuration, gpsd, etc.), please refer to the \u003ca href=\"\/products\/raspberry-pi-5-pcie-hat-with-i226-nic-timehat\"\u003eTimeHATv6 product page\u003c\/a\u003e — all software setup steps are identical between v5 and v6.\u003c\/p\u003e","brand":"Time Appliances","offers":[{"title":"Default Title","offer_id":43792143351882,"sku":null,"price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/3210\/9130\/files\/IMG_5470.jpg?v=1784251981","url":"https:\/\/timeappliances.myshopify.com\/products\/timehatv5","provider":"Time Appliances","version":"1.0","type":"link"}