{"id":6926,"date":"2026-06-22T02:13:13","date_gmt":"2026-06-22T02:13:13","guid":{"rendered":"https:\/\/materialparts.com\/dp83848ksq\/"},"modified":"2026-06-22T02:13:13","modified_gmt":"2026-06-22T02:13:13","slug":"dp83848ksq","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/dp83848ksq\/","title":{"rendered":"DP83848KSQ"},"content":{"rendered":"

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

The DP83848KSQ from Texas Instruments is a 10\/100 Ethernet PHY transceiver with MII\/RMII interface, IEEE 802.3u compliance, and LQFP-48 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n10\/100 Ethernet PHY Transceiver<\/td>\n<\/tr>\n
Speed<\/td>\n10 Mbps and 100 Mbps<\/td>\n<\/tr>\n
MAC Interface<\/td>\nMII \/ RMII<\/td>\n<\/tr>\n
Standards<\/td>\nIEEE 802.3u, IEEE 802.3x<\/td>\n<\/tr>\n
Auto-Negotiation<\/td>\nYes<\/td>\n<\/tr>\n
Auto-MDIX<\/td>\nYes (auto crossover)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3.3V (I\/O); 1.8V (core, internal regulator)<\/td>\n<\/tr>\n
Current Consumption<\/td>\n130 mA (typical, 100Mbps active)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nLQFP-48 (7 x 7 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C (I grade, K suffix)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 10\/100Mbps Ethernet PHY with auto-negotiation<\/li>\n
  • MII and RMII MAC interface support<\/li>\n
  • Auto-MDIX for automatic TX\/RX crossover<\/li>\n
  • IEEE 802.3u compliant<\/li>\n
  • Integrated 1.8V core voltage regulator<\/li>\n
  • 25MHz crystal or oscillator input<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Embedded Ethernet connectivity<\/li>\n
    • Industrial networking<\/li>\n
    • IoT gateways<\/li>\n
    • Network-enabled microcontroller systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The DP83848KSQ from Texas Instruments is a 10\/100 Ethernet PHY transceiver with MII\/RMII interface, IEEE 802.3u compliance, and LQFP-48 package. Key Specifications Type 10\/100 Ethernet PHY Transceiver Speed 10 Mbps and 100 Mbps MAC Interface MII \/ RMII Standards IEEE 802.3u, IEEE 802.3x Auto-Negotiation Yes Auto-MDIX Yes (auto crossover) Supply Voltage 3.3V (I\/O); […]<\/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":[138],"class_list":["post-6926","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"10\/100 Ethernet PHY, MII\/RMII, Auto-MDIX, LQFP-48","date_code":"","package_case":"LQFP-48 (7.0 x 7.0 x 1.4 mm)","in_stock":5678,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/dp83848i.pdf","price":"$2.50 @ 1ku","product_introduction":"The DP83848KSQ from Texas Instruments (formerly National Semiconductor) is a robust 10\/100 Mbps Ethernet physical layer transceiver designed for embedded networking applications. The device provides a complete PHY solution with integrated 100Base-TX and 10Base-T transceivers, supporting both MII (Media Independent Interface) and RMII (Reduced MII) connections to the MAC layer. Auto-negotiation automatically selects the best available speed and duplex mode. Auto-MDIX eliminates the need for crossover cables by automatically detecting and correcting TX\/RX pair polarity. The integrated 1.8V core voltage regulator simplifies the power supply design to a single 3.3V rail. The device is compliant with IEEE 802.3u and IEEE 802.3x standards. The LQFP-48 package provides adequate pin spacing for manufacturing ease while maintaining a compact footprint.","working_principle":"The DP83848KSQ implements the physical layer of the Ethernet protocol stack. For 100Base-TX operation, the transmitter encodes 4-bit nibbles from the MII into 5-bit symbols using 4B\/5B encoding, scrambles the data, and converts it to MLT-3 (Multi-Level Transmit) three-level signaling for transmission over the twisted pair. The receiver performs the reverse: equalization, MLT-3 decoding, descrambling, and 5B\/4B decoding to recover the MII nibbles. For 10Base-T, Manchester encoding is used. The auto-negotiation protocol (IEEE 802.3u) exchanges capability information with the link partner using Fast Link Pulses (FLP) to determine the highest common speed and duplex mode. Auto-MDIX detects whether the cable is straight-through or crossover by measuring the received signal polarity on the TX pair and swapping the TX\/RX pairs if needed. The internal PLL generates all required clock frequencies from the 25 MHz input reference.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      MAC<\/td>TXD[0:3]\/TXD[0:1]<\/td>Input<\/td>MII\/RMII transmit data<\/td><\/tr>
      MAC<\/td>RXD[0:3]\/RXD[0:1]<\/td>Output<\/td>MII\/RMII receive data<\/td><\/tr>
      MAC<\/td>TX_CLK\/TX_EN<\/td>I\/O<\/td>MII clock\/Transmit enable<\/td><\/tr>
      MAC<\/td>RX_CLK\/RX_DV<\/td>Output<\/td>MII clock\/Receive data valid<\/td><\/tr>
      MAC<\/td>MDC\/MDIO<\/td>I\/O<\/td>Management interface (SMI)<\/td><\/tr>
      Line<\/td>TXP\/TXN<\/td>Output<\/td>Differential transmit pair<\/td><\/tr>
      Line<\/td>RXP\/RXN<\/td>Input<\/td>Differential receive pair<\/td><\/tr>
      Clock<\/td>X1\/X2<\/td>I\/O<\/td>25 MHz crystal\/oscillator<\/td><\/tr>
      Power<\/td>VDD\/AVDD<\/td>Power<\/td>3.3V supply<\/td><\/tr><\/table>","application_scenarios":"
      • STM32F4 Ethernet connectivity with RMII interface and Auto-MDIX<\/li>
      • Industrial Modbus TCP gateway with 10\/100Mbps PHY and auto-negotiation<\/li>
      • IoT smart home hub with Ethernet backhaul and 130mA active current<\/li>
      • Embedded web server with MII interface to custom FPGA MAC<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>DP83848CVV<\/td>LQFP-48<\/td>Commercial temp version<\/td><\/tr>
        Microchip<\/td>KSZ8041NLIA<\/td>QFN-32<\/td>10\/100 PHY, smaller package<\/td><\/tr>
        Realtek<\/td>RTL8201F-VB-CG<\/td>QFN-32<\/td>10\/100 PHY, lower cost<\/td><\/tr>
        Microchip<\/td>KSZ9031RNXIA<\/td>QFN-48<\/td>Gigabit PHY upgrade<\/td><\/tr>
        TI<\/td>DP83867IR<\/td>QFN-48<\/td>Gigabit PHY, RGMII<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6926","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=6926"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6926\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6926"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}