BCM5396KFBG - 16-Port Gigabit Ethernet Switch with Integrated SerDes | Broadcom
MPN： BCM5396KFBG ✓ 啟用中BCM5396KFBG 概覽
An Ethernet switch is a network-semiconductor device that receives Ethernet frames on multiple ports and forwards them through a shared internal switching fabric. The BCM5396 family integrates 16 Gigabit Ethernet ports with physical-layer transceiver functions, allowing a board to implement a multi-port network interface without using a separate switch controller and sixteen external SerDes devices. The switch controller and packet-buffer architecture coordinate traffic transfer among ports.
The most prominent functional characteristics are the 16 Gigabit Ethernet ports, integrated SerDes, non-blocking switch operation, and integrated packet buffer. The monolithic design also includes Media Access Controllers and address management. These features make the BCM5396 suited to compact networking equipment where port density, integration, and board area matter. The SPI host interface provides a control path for configuring switch operation and managing relevant networking parameters.
Broadcom's manufacturer datasheet describes the BCM5396 as a highly integrated high-speed switch solution. It is implemented in 0.13 µm CMOS, combining the MACs, packet buffer, address-management logic, and switch controller rather than relying on discrete components for those functions. It complies with the IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, and IEEE 802.3x specifications, including support for MAC-control PAUSE frames. Exact clock, voltage, power, and temperature limits were not available in the supplied excerpts and require confirmation in the complete datasheet.
Typical applications include industrial Ethernet switches, telecom access equipment, network-interface appliances, and multi-port embedded networking systems. In these systems, the 16 integrated ports can reduce component count and PCB routing demand compared with a design built from discrete Ethernet PHYs. Its low-power operating mode, noted in distributor product information, may be useful when port activity or traffic demand is limited. The SPI interface also makes the device suitable for systems whose supervising processor must initialize or supervise the switch.
The primary design consideration is package complexity. A 256-FBGA device requires a fine-pitch PCB land pattern, careful escape routing, reliable power and ground distribution, and assembly capability suitable for large ball-grid arrays. Designers should also verify clock requirements, SerDes electrical characteristics, thermal performance, reset behavior, and supported PHY or media arrangements against the complete manufacturer datasheet before releasing layout or production files.
This page consolidates verified distributor listings, the Broadcom manufacturer datasheet excerpt, package information, sourcing data, and application guidance. It also distinguishes documented BCM5396 capabilities from details that still require validation, helping engineers evaluate the device without mistaking incomplete distributor metadata for a complete electrical specification set.
直接替換替代品，適用於 BCM5396KFBG — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： BCM5396KFBG （相同外形與佔位） — 差異在於 Mounting Type, Number of Ethernet Ports, Package, Product Type.
此產品無可直接替換的替代品。
申請替代品BCM5396KFBG 最大額定值與電氣特性
| Product Type | 16-port Gigabit Ethernet switch with integrated SerDes |
| Number of Ethernet Ports | 16 ports |
| Ethernet Data Rate | 1 Gb/s per port |
| Host Interface | SPI |
| Process Technology | 0.13 µm CMOS |
| Integrated Functions | Packet buffer, 16 Media Access Controllers, address management, and non-blocking switch controller |
| IEEE Compliance | IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, and IEEE 802.3x |
| Flow-Control Support | MAC-control PAUSE frame |
| 封裝 | 256-FBGA, 17 x 17 mm |
| 安裝類型 | Surface-mount ball-grid array |
| Operating Modes | Normal operation and low-power mode |
BCM5396KFBG 256-fbga, 17 x 17 mm 腳位配置指南
BCM5396KFBG（256-fbga, 17 x 17 mm 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： BCM5396KFBG.
請參閱 資料表 以查看完整腳位配置。
典型應用
BCM5396KFBG 適用於 6 應用s: Industrial Ethernet Switches, Telecom Access Equipment, Network Interface Appliances, Embedded Multi-Port Ethernet Systems, Power-Constrained Port Concentrators, Robust Gigabit Ethernet Port Expansion.
Industrial Ethernet Switches
The BCM5396KFBG fits industrial Ethernet switch designs that need 16 Gigabit Ethernet ports without populating sixteen separate physical-layer devices. Its integrated SerDes, Media Access Controllers, packet buffer, address management, and non-blocking switch controller provide a consolidated network-forwarding implementation in one 0.13 µm CMOS device. The SPI interface gives a supervising controller a direct path for configuration. A principal engineering trade-off is the 256-FBGA package: the design must support 17 x 17 mm fine-pitch assembly, controlled escape routing, and robust power delivery. Temperature and industrial qualification requirements should be checked against the complete manufacturer datasheet before deployment.
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Telecom Access Equipment
The BCM5396KFBG is applicable to telecom access equipment requiring a concentrated set of Gigabit Ethernet ports and centralized packet switching. Its 16 integrated SerDes interfaces reduce the number of separate PHY-related circuit blocks, while the monolithic packet buffer, address management, and non-blocking controller support high-speed frame handling. The manufacturer datasheet identifies IEEE 802.3, 802.3u, 802.3ab, and 802.3x compliance, including MAC-control PAUSE-frame behavior. Integration alone does not establish carrier-grade suitability, so telecommunications designers must still verify timing, temperature, power, and line-card environmental requirements before approving the device for production.
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Network Interface Appliances
The BCM5396KFBG can serve as the central switching component in a network-interface appliance that exposes 16 wired Gigabit Ethernet connections to an embedded host processor. The SPI interface allows supervisory firmware to configure switch functions, while the integrated SerDes and 16 Media Access Controllers provide a compact implementation of the physical and data-link layers. Compared with a controller plus many discrete PHY devices, the monolithic arrangement can simplify board space and synchronization. The design must account for the 256-FBGA footprint, complete power-plane distribution, controlled differential routing, and thermal performance across all 16 active ports under sustained traffic.
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Embedded Multi-Port Ethernet Systems
The BCM5396KFBG is suitable for embedded systems that need many deterministic Gigabit Ethernet connections in a single board design. Its integrated packet buffer, address-management logic, Media Access Controllers, and non-blocking switch controller provide the core functions needed to move frames among 16 ports. A host processor can use the SPI interface for setup and supervision, avoiding a separate switching ASIC and a large collection of discrete PHY components. The tradeoff is manufacturing complexity: a 256-FBGA package demands accurate ball-pattern definition, adequate escape routing, multilayer power distribution, and assembly validation. Signal-integrity and thermal analysis should be completed against the full datasheet.
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Power-Constrained Port Concentrators
The BCM5396KFBG can fit a power-conscious port-concentrator architecture because it consolidates 16 Gigabit Ethernet ports, SerDes, MACs, packet buffering, and switch control into one monolithic device. The verified distributor information also identifies a low-power operating mode, which may help designers reduce activity when the full port set is not required. This feature should be evaluated with complete timing, current-consumption, and wake-up specifications from the manufacturer datasheet. The device remains physically intensive to implement, and unused or disabled ports still require careful validation in the power budget, reset sequence, firmware configuration, and electromagnetic-emissions testing.
推薦
Robust Gigabit Ethernet Port Expansion
The BCM5396KFBG provides a practical port-expansion path for equipment that already has a host processor but requires 16 managed Gigabit Ethernet links. The host communicates through SPI, and the BCM5396 performs the associated switching tasks through its integrated controllers and packet buffer. This arrangement can be useful in industrial gateways, test systems, and communications equipment where numerous copper Ethernet connections must converge on a single embedded platform. Integration reduces the number of discrete network devices, but it does not eliminate connector magnetics, Ethernet physical design, isolation, surge protection, or regulatory testing. Those external requirements must be implemented around the device according to the reference design and interface specifications.
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推薦產品摘要
工程參考資料，適用於 BCM5396KFBG — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 256-FBGA (17 x 17 mm) |
| Brand | Broadcom |
| Number of Gigabit Ethernet Ports | 16 ports |
| Integrated SerDes | Yes |
| Host Interface | SPI |
| Process Technology | 0.13 µm CMOS |
| Switch Architecture | Non-blocking switch controller with packet buffer |
| IEEE Standards | IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x |
| Flow Control | MAC-control PAUSE frame |
| Operating Modes | Normal operation and low-power mode |
主要差異化特點
- Sixteen Gigabit Ethernet ports with integrated SerDes (對比BCM5389KFBG)
- Single-chip switching architecture (對比BCM53158XMB1KFBG)
- Host-managed SPI configuration (對比Discrete PHY-based implementations)
設計說明
Treat the 256-FBGA package as a high-density PCB-design constraint. Confirm the exact ball map, power and ground assignments, exposed thermal requirements, and escape-routing rules from the complete manufacturer documentation before schematic capture is frozen. Use short, geometry-controlled escape paths wherever possible, and validate the layer stack, via strategy, and differential SerDes routing with the manufacturer's reference design rather than relying on a generic BGA layout.
Separate core and SerDes supply planning from signal-routing work because exact voltage, tolerance, sequencing, and current limits were not present in the supplied excerpts. Confirm those limits in the complete datasheet, then design for simultaneous 16-port activity and worst-case traffic. Use low-impedance power distribution, local high-frequency decoupling at the appropriate supply pins, and verify that the host controller can sequence the device safely during reset and power-up.
Apply the manufacturer's SerDes routing and reference-plane guidance to every differential pair and avoid discontinuities beneath the switching device wherever the design rules permit. Keep the SPI configuration bus away from sensitive high-speed pairs, provide a defined ground reference, and prevent noisy power-regulator return currents from sharing paths with SerDes signals. Post-layout extraction should be used to review insertion loss, skew, return loss, and crosstalk across the intended operating channels.
Do not treat distributor descriptions as a complete electrical specification or assume that a related Broadcom MPN is pin-compatible. The exact operating voltages, clock requirements, port restrictions, reset sequence, thermal limits, and package ball assignments must be checked in the complete manufacturer datasheet. Similarly, the price result is a single distributor unit-price listing rather than a verified volume-price schedule, and alternative MPNs should not be approved for drop-in use without documented pin-to-pin and functional equivalence.
合規資訊
The supplied search results mention that RoHS and REACH information is compared on third-party pages, but they do not explicitly state this part's compliance values. IEEE 802.3, 802.3u, 802.3ab, and 802.3x compliance is confirmed by the manufacturer datasheet excerpt.
