{"id":6944,"date":"2026-06-22T03:04:50","date_gmt":"2026-06-22T03:04:50","guid":{"rendered":"https:\/\/materialparts.com\/lan7430-i-y9x\/"},"modified":"2026-06-22T03:04:50","modified_gmt":"2026-06-22T03:04:50","slug":"lan7430-i-y9x","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lan7430-i-y9x\/","title":{"rendered":"LAN7430-I\/Y9X"},"content":{"rendered":"

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The LAN7430-I\/Y9X from Microchip Technology is a PCIe 3.1 to Gigabit Ethernet bridge with integrated MAC\/PHY, IEEE 1588 PTP, and VQFN-48 package for industrial applications.<\/p>\n

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\u7c7b\u578b<\/td>\nPCIe to Gigabit Ethernet Bridge<\/td>\n<\/tr>\n
PCIe Interface<\/td>\nPCIe 3.1 at 2.5 GT\/s (Gen 1)<\/td>\n<\/tr>\n
Ethernet Speed<\/td>\n10\/100\/1000 Mbps<\/td>\n<\/tr>\n
Ethernet Standards<\/td>\nIEEE 802.3\/802.3u\/802.3ab<\/td>\n<\/tr>\n
Auto-MDIX<\/td>\nYes (HP Auto-MDIX)<\/td>\n<\/tr>\n
EEE<\/td>\nIEEE 802.3az Energy Efficient Ethernet<\/td>\n<\/tr>\n
IEEE 1588<\/td>\n1588-2008 PTP (E2E and P2P, one\/two step)<\/td>\n<\/tr>\n
Jumbo Frames<\/td>\n9 KB supported<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3.3V (I\/O); 1.2V (core, internal LDO)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nVQFN-48 (7 x 7 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C (I grade)<\/td>\n<\/tr>\n<\/table>\n

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  • Single-chip PCIe to 10\/100\/1000 Ethernet controller<\/li>\n
  • Integrated 10\/100\/1000 Ethernet PHY<\/li>\n
  • PCIe 3.1 with L1.1 and L1.2 low-power sub-states<\/li>\n
  • IEEE 1588-2008 PTP with programmable 1PPS output<\/li>\n
  • Auto-negotiation and HP Auto-MDIX<\/li>\n
  • Integrated OTP memory (no external EEPROM required)<\/li>\n
  • Single 3.3V supply with internal regulators<\/li>\n
  • Only 25MHz crystal required<\/li>\n<\/ul>\n

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    • Industrial PC Ethernet connectivity<\/li>\n
    • Embedded PCIe networking<\/li>\n
    • Network cameras<\/li>\n
    • Test and measurement equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LAN7430-I\/Y9X from Microchip Technology is a PCIe 3.1 to Gigabit Ethernet bridge with integrated MAC\/PHY, IEEE 1588 PTP, and VQFN-48 package for industrial applications. Key Specifications Type PCIe to Gigabit Ethernet Bridge PCIe Interface PCIe 3.1 at 2.5 GT\/s (Gen 1) Ethernet Speed 10\/100\/1000 Mbps Ethernet Standards IEEE 802.3\/802.3u\/802.3ab Auto-MDIX Yes (HP […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[134],"class_list":["post-6944","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"PCIe to GbE Bridge, Int PHY, 1588 PTP, VQFN-48","date_code":"","package_case":"VQFN-48 (7.0 x 7.0 x 1.0 mm, 0.5mm pitch)","in_stock":5678,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/00002631A.pdf","price":"$7.80 @ 1ku","product_introduction":"The LAN7430-I\/Y9X from Microchip Technology is a single-chip PCIe to Gigabit Ethernet bridge that integrates the PCIe endpoint controller, PCIe PHY, Ethernet MAC, and 10\/100\/1000 Ethernet PHY in a 7x7mm VQFN-48 package. The device bridges PCIe 3.1 (at 2.5GT\/s Gen 1) to 10\/100\/1000Base-T Ethernet with auto-negotiation and HP Auto-MDIX for automatic crossover detection. IEEE 1588-2008 Precision Time Protocol support includes both End-to-End and Peer-to-Peer one-step and two-step modes, with a programmable 1PPS output for time synchronization. The integrated OTP memory eliminates the need for an external EEPROM for configuration, reducing BOM cost. The device requires only a single 3.3V supply and a 25MHz crystal, with internal regulators generating all other required voltages. PCIe low-power sub-states L1.1 and L1.2 minimize power consumption when the link is idle. IEEE 802.3az Energy Efficient Ethernet reduces power during periods of low data utilization. The industrial temperature range (-40C to +85C) supports rugged embedded applications.","working_principle":"The LAN7430-I\/Y9X consists of four main functional blocks: the PCIe endpoint controller, PCIe PHY, Ethernet MAC, and Ethernet PHY. The PCIe endpoint controller manages the PCIe transaction layer, data link layer, and physical layer protocols for communication with the host system. The PCIe PHY handles the high-speed serial link at 2.5GT\/s with 8b\/10b encoding, providing 250MB\/s raw bandwidth per lane. The Ethernet MAC handles the IEEE 802.3 frame formatting, address filtering, VLAN tagging, and flow control. The integrated 1000Base-T Ethernet PHY performs the physical layer functions including 4D-PAM5 encoding for 1000Mbps, MLT-3 encoding for 100Mbps, and Manchester encoding for 10Mbps. The auto-negotiation function exchanges capability information with the link partner to select the best available speed and duplex. Auto-MDIX detects whether a crossover cable is needed and internally swaps the TX\/RX pairs if required. The IEEE 1588-2008 PTP module timestamps incoming and outgoing PTP frames with nanosecond resolution, enabling sub-microsecond clock synchronization across the network. The PCIe L1.1 and L1.2 sub-states allow the PCIe link to enter low-power modes while maintaining the link connection, reducing power consumption by 90%+ compared to L0 active state.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      PCIe<\/td>PERST#<\/td>Input<\/td>PCIe fundamental reset<\/td><\/tr>
      PCIe<\/td>CLKREQ#<\/td>Output<\/td>PCIe clock request (for L1.2)<\/td><\/tr>
      PCIe<\/td>TXP\/TXN<\/td>Output<\/td>PCIe differential transmit pair<\/td><\/tr>
      PCIe<\/td>RXP\/RXN<\/td>Input<\/td>PCIe differential receive pair<\/td><\/tr>
      Ethernet<\/td>TXP_A\/TXN_A<\/td>Output<\/td>Gigabit PHY transmit pair A<\/td><\/tr>
      Ethernet<\/td>RXP_A\/RXN_A<\/td>Input<\/td>Gigabit PHY receive pair A<\/td><\/tr>
      Ethernet<\/td>TXP_B\/TXN_B etc.<\/td>I\/O<\/td>Gigabit PHY pairs B, C, D<\/td><\/tr>
      Clock<\/td>XTAL1\/XTAL2<\/td>I\/O<\/td>25 MHz crystal or clock<\/td><\/tr>
      Misc<\/td>GPIO[3:0]<\/td>I\/O<\/td>General purpose I\/O (LED\/PTP\/1PPS)<\/td><\/tr>
      Power<\/td>VDD33\/VDD12<\/td>Power<\/td>3.3V\/1.2V supply rails<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial IPC Gigabit Ethernet with IEEE 1588 PTP for motion control synchronization<\/li>
      • Network camera PCIe interface with Auto-MDIX and 802.3az EEE for power savings<\/li>
      • Test instrument GbE connectivity with 9KB jumbo frames for data streaming<\/li>
      • Embedded Linux system PCIe networking with integrated OTP for zero-Ethernet BOM<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Microchip<\/td>LAN7430T-I\/Y9X<\/td>VQFN-48<\/td>Tape and reel version<\/td><\/tr>
        Intel<\/td>I210-AT<\/td>QFN-48<\/td>PCIe GbE with 1588, alternative<\/td><\/tr>
        Realtek<\/td>RTL8111H-CG<\/td>QFN-48<\/td>PCIe GbE, lower cost<\/td><\/tr>
        Microchip<\/td>LAN7431-I\/Y9X<\/td>VQFN-48<\/td>RGMII\/MII version (external PHY)<\/td><\/tr>
        Broadcom<\/td>BCM5720<\/td>BGA<\/td>Dual-port GbE, higher end<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=6944"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6944\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6944"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}