{"id":6315,"date":"2026-06-12T11:31:37","date_gmt":"2026-06-12T11:31:37","guid":{"rendered":"https:\/\/materialparts.com\/ksz8794cnxic\/"},"modified":"2026-06-12T11:31:37","modified_gmt":"2026-06-12T11:31:37","slug":"ksz8794cnxic","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ksz8794cnxic\/","title":{"rendered":"KSZ8794CNXIC"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The KSZ8794CNXIC from Microchip Technology is a 4-port 10\/100 Ethernet switch with MII\/RMII host interface in an LQFP-128 package. Supporting VLAN, QoS, IGMP snooping, and non-blocking wire-speed forwarding, it enables managed Ethernet switching in industrial and embedded networking applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Ports<\/td>\n4 (3 PHY + 1 MAC)<\/td>\n<\/tr>\n
Speed<\/td>\n10\/100 Mbps<\/td>\n<\/tr>\n
Host Interface<\/td>\nMII \/ RMII<\/td>\n<\/tr>\n
Core Supply<\/td>\n3.3V<\/td>\n<\/tr>\n
I\/O Supply<\/td>\n3.3V \/ 2.5V<\/td>\n<\/tr>\n
Power Consumption<\/td>\n<1W<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C (CNXIC suffix)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nLQFP-128 (14x14mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 4-port integrated 10\/100 Ethernet switch with 3 PHY + 1 MAC port<\/li>\n
  • MII\/RMII host interface for MCU\/SoC connectivity<\/li>\n
  • VLAN support (port-based and 802.1Q tag-based)<\/li>\n
  • QoS with 4 traffic queues per port<\/li>\n
  • IGMP snooping for multicast optimization<\/li>\n
  • Non-blocking wire-speed switching fabric (400Mbps)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial Ethernet switches and gateways<\/li>\n
    • Embedded networking in automation systems<\/li>\n
    • IP cameras and video surveillance networks<\/li>\n
    • Building automation and smart infrastructure<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The KSZ8794CNXIC from Microchip Technology is a 4-port 10\/100 Ethernet switch with MII\/RMII host interface in an LQFP-128 package. Supporting VLAN, QoS, IGMP snooping, and non-blocking wire-speed forwarding, it enables managed Ethernet switching in industrial and embedded networking applications. Key Specifications Ports 4 (3 PHY + 1 MAC) Speed 10\/100 Mbps Host Interface […]<\/p>\n","protected":false},"author":2,"featured_media":6331,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[134],"class_list":["post-6315","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-microchip"],"acf":{"brief_explanation":"4-port 10\/100 Ethernet switch, MII\/RMII, VLAN, QoS, IGMP, LQFP-128, industrial","date_code":"","package_case":"LQFP-128 (14x14mm, 0.4mm pitch)","in_stock":9974,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/KSZ8794-Data-Sheet-DS00002603A.pdf","price":"$5.80 @1ku","product_introduction":"The KSZ8794CNXIC from Microchip Technology is a fully integrated 4-port 10\/100 Ethernet switch designed for managed networking in industrial and embedded applications. It features three 10\/100 PHY ports with integrated magnetics-compatible drivers and one MII\/RMII MAC port for direct connection to an MCU or SoC. The switch fabric provides non-blocking wire-speed forwarding across all ports, while advanced features including 802.1Q VLAN, 4-queue QoS, IGMP snooping, and MIB statistics enable managed network functionality without an external management processor.","working_principle":"The KSZ8794CNXIC implements a store-and-forward Ethernet switch architecture. Each PHY port includes a 10\/100 MAC, an 8B\/10B encoder\/decoder, and a DSP-based transceiver that handles auto-negotiation, auto-MDIX, and signal conditioning. Received frames are stored in the shared packet buffer, examined by the address lookup engine (which maintains a 1K-entry MAC address table), and forwarded to the appropriate output port(s). VLAN tagging\/untagging is performed based on port VLAN configuration. The QoS engine classifies frames into 4 priority queues per output port using 802.1p priority, DSCP, or port-based rules. IGMP snooping intercepts IGMP queries and reports to build multicast group membership tables, forwarding multicast traffic only to ports with interested receivers.","pin_description":"
      Pin Group<\/th>Count<\/th>Description<\/th><\/tr>
      PHY Port 1-3<\/td>24<\/td>10\/100 Ethernet PHY TX\/RX pairs<\/td><\/tr>
      MII\/RMII Host<\/td>18<\/td>Host interface data, clock, control<\/td><\/tr>
      MDIO\/MDC<\/td>2<\/td>Management interface (SMI)<\/td><\/tr>
      SPI<\/td>4<\/td>SPI management interface<\/td><\/tr>
      VDD Core<\/td>6<\/td>3.3V core supply<\/td><\/tr>
      VDDIO<\/td>4<\/td>3.3V\/2.5V I\/O supply<\/td><\/tr>
      GND<\/td>12<\/td>Ground<\/td><\/tr>
      LED<\/td>6<\/td>Port status LED outputs<\/td><\/tr>
      Config\/Strap<\/td>8<\/td>Configuration strap inputs<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial Ethernet managed switches and routers<\/li>
      • Embedded network gateways connecting field devices to backbone<\/li>
      • IP camera and video surveillance network aggregation<\/li>
      • Building automation and smart infrastructure Ethernet nodes<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Ports<\/th>Speed<\/th>Interface<\/th><\/tr>
        KSZ8795CNXIC<\/td>Microchip<\/td>5<\/td>10\/100<\/td>MII\/RMII<\/td><\/tr>
        KSZ8863<\/td>Microchip<\/td>3<\/td>10\/100<\/td>MII\/RMII<\/td><\/tr>
        DP83869HM<\/td>TI<\/td>1 PHY<\/td>10\/100\/1000<\/td>RGMII\/SGMII<\/td><\/tr>
        LAN9303<\/td>Microchip<\/td>3<\/td>10\/100<\/td>MII\/RMII<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6315","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=6315"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6315\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/6331"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6315"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}