{"id":6809,"date":"2026-06-21T12:32:58","date_gmt":"2026-06-21T12:32:58","guid":{"rendered":"https:\/\/materialparts.com\/pex8604-ba50bcg\/"},"modified":"2026-06-21T12:32:58","modified_gmt":"2026-06-21T12:32:58","slug":"pex8604-ba50bcg","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/pex8604-ba50bcg\/","title":{"rendered":"PEX8604-BA50BCG"},"content":{"rendered":"

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

The PEX8604-BA50BCG from Broadcom (PLX Technology) is a 4-lane 4-port PCI Express Gen 2 (5.0 GT\/s) switch with non-transparent bridging, dual cast, and 190 ns cut-through latency in a 196-ball 15x15mm PBGA. Note: This product is obsolete.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nPCI Express Gen 2 Switch<\/td>\n<\/tr>\n
PCIe Specification<\/td>\nPCIe 2.0 (5.0 GT\/s)<\/td>\n<\/tr>\n
Lanes<\/td>\n4 (configurable as x1 or x2 per port)<\/td>\n<\/tr>\n
Ports<\/td>\n4<\/td>\n<\/tr>\n
Cut-Through Latency<\/td>\n190 ns<\/td>\n<\/tr>\n
Max Payload Size<\/td>\n2 KB<\/td>\n<\/tr>\n
Virtual Channels<\/td>\n2 per port<\/td>\n<\/tr>\n
Non-Transparent Port<\/td>\n1 (configurable)<\/td>\n<\/tr>\n
Typical Power<\/td>\n1.29 W<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n196-ball PBGA (15 x 15 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n0C to +70C<\/td>\n<\/tr>\n
Product Status<\/td>\nObsolete<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • PCI Express 2.0 compliant (backward compatible with 1.0a\/1.1)<\/li>\n
  • 4 configurable ports (x1 or x2)<\/li>\n
  • Non-transparent bridging for dual-host and failover<\/li>\n
  • Dual cast for data mirroring<\/li>\n
  • Read pacing for bandwidth fairness<\/li>\n
  • Hot-plug capable on all ports<\/li>\n
  • SSC isolation with dual clock domains<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • PCIe fan-out from CPU to multiple endpoints<\/li>\n
    • Dual-host intelligent adapter cards<\/li>\n
    • Storage and security data mirroring<\/li>\n
    • Set-top box and consumer PCIe expansion<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The PEX8604-BA50BCG from Broadcom (PLX Technology) is a 4-lane 4-port PCI Express Gen 2 (5.0 GT\/s) switch with non-transparent bridging, dual cast, and 190 ns cut-through latency in a 196-ball 15x15mm PBGA. Note: This product is obsolete. Key Specifications Type PCI Express Gen 2 Switch PCIe Specification PCIe 2.0 (5.0 GT\/s) Lanes 4 […]<\/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":[13,20],"tags":[],"chip_brand":[198],"class_list":["post-6809","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-broadcom"],"acf":{"brief_explanation":"4-Lane 4-Port PCIe Gen2 Switch, 190ns Latency, NTB, 196-BGA, Obsolete","date_code":"","package_case":"196-ball PBGA (15 x 15 x 1.72 mm, 1.0mm pitch)","in_stock":643,"datasheet":"https:\/\/docs.broadcom.com\/doc\/PEX8604-BA-Data-Sheet","price":"$12.00 @ 1ku","product_introduction":"The PEX8604-BA50BCG from Broadcom (formerly PLX Technology) is a 4-lane 4-port PCI Express Gen 2 switch capable of 5.0 GT\/s per lane. The device features non-blocking architecture with 190 ns cut-through latency, supporting full line rate on all ports simultaneously. One port can be configured as non-transparent for dual-host and failover applications. The dual cast feature copies data from one ingress port to two egress ports for storage mirroring and security applications. Read pacing ensures fair bandwidth allocation across ports. All ports support hot-plug operation. The 1.29 W typical power consumption and 15x15mm PBGA make it suitable for space-constrained consumer and embedded designs. Note: This product is obsolete and not recommended for new designs.","working_principle":"The PEX8604-BA50BCG implements a non-blocking crossbar switch fabric connecting four PCIe ports. Each port can be configured as x1 or x2 lane width through strapping pins, EEPROM, I2C, or host software. The switch operates in two modes: transparent mode for standard PCIe topology (upstream\/downstream) and non-transparent mode for dual-host isolation. In transparent mode, the switch forwards configuration, memory, and I\/O transactions between upstream and downstream ports following PCIe forwarding rules. In non-transparent mode, address windows translate addresses between the two host domains, allowing isolated hosts to share memory-mapped resources. The cut-through architecture begins forwarding a packet to the egress port before the entire packet is received, achieving 190 ns latency. Dual cast duplicates packets from one ingress to two egress ports in a single pass. The two virtual channels per port provide QoS differentiation for isochronous vs. bulk traffic.","pin_description":"
      Pin Group<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      Multiple<\/td>VDD<\/td>Power<\/td>Core and I\/O supply (1.0V\/1.8V\/3.3V)<\/td><\/tr>
      Multiple<\/td>VSS<\/td>Ground<\/td>Ground<\/td><\/tr>
      Multiple<\/td>PERp\/n[0-3]<\/td>I\/O<\/td>PCIe receive lanes<\/td><\/tr>
      Multiple<\/td>PETp\/n[0-3]<\/td>I\/O<\/td>PCIe transmit lanes<\/td><\/tr>
      Multiple<\/td>GPIO<\/td>I\/O<\/td>General purpose I\/O \/ strapping<\/td><\/tr>
      Dedicated<\/td>REFCLKp\/n<\/td>Input<\/td>Reference clock input<\/td><\/tr>
      Dedicated<\/td>PERST_n<\/td>Input<\/td>PCIe reset<\/td><\/tr>
      Dedicated<\/td>TCK\/TDI\/TDO\/TMS<\/td>I\/O<\/td>JTAG boundary scan<\/td><\/tr><\/table>","application_scenarios":"
      • Set-top box CPU fan-out to WiFi, storage, and bridge peripherals<\/li>
      • Dual-host storage controller with non-transparent bridging<\/li>
      • Industrial vision system PCIe camera multiplexing<\/li>
      • Wireless adapter card with multiple PCIe endpoints<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Broadcom<\/td>PEX8605-BA50BCG<\/td>196-BGA<\/td>5-port variant, same family<\/td><\/tr>
        Broadcom<\/td>PEX8748-CA80BC<\/td>676-BGA<\/td>48-lane, Gen 3, active product<\/td><\/tr>
        Microchip<\/td>Switchtec PSX 4x4<\/td>BGA<\/td>4-port Gen 3 switch, active<\/td><\/tr>
        Intel<\/td>XXV710<\/td>BGA<\/td>Different approach, NIC with SR-IOV<\/td><\/tr>
        Broadcom<\/td>PAS6208<\/td>BGA<\/td>8-port Gen 3, current product<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6809","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=6809"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6809\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6809"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}