BCM56870A0KFSBG - 3.2T 32x100G Switch | Broadcom
料号： BCM56870A0KFSBG ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
BCM56870A0KFSBG 概述
An Ethernet switch controller is a semiconductor that coordinates traffic between multiple network ports, performs packet classification and forwarding, and connects switching silicon to a host or fabric through an interface such as PCIe. Within the network hierarchy, it sits between endpoint transceivers, physical-layer devices, processors, and line-card equipment. This makes it relevant to high-throughput aggregation, top-of-rack, and enterprise switching systems rather than ordinary endpoint Ethernet controllers.
The headline configuration combines 3.2 Tbps switching capability with 32 x 100G-class ports. These figures describe the scale of traffic and port density the device targets, but they do not independently establish every electrical or protocol limit. According to the Broadcom and Mouser product records, BCM56870A0KFSBG is associated with the BCM56870 multilayer-switch family and a PCIe interface. Distributor records classify it under Ethernet interface controllers.
The part is intended for designs where many high-speed lanes must be aggregated while maintaining a structured switching fabric. Such designs typically require careful lane planning, power delivery, thermal management, clock distribution, signal-integrity control, and protocol-specific firmware. The supplied web data does not provide a complete electrical specification table, pinout, package dimensions, thermal limits, or supported protocol list, so those details must be confirmed against the official Broadcom datasheet before layout or firmware release.
Typical uses include 100G Ethernet aggregation equipment, high-port-density switch line cards, top-of-rack designs, and data-center interconnect platforms. In each case, the controller is used with compatible optical or copper transceivers, SerDes infrastructure, packet-processing software, and a host or fabric interface. The device should be selected only when the complete system architecture, lane mapping, power budget, thermal design, and software support have been validated.
A key engineering consideration is that high switching throughput does not eliminate the need for careful PCB implementation. Differential pairs, reference planes, connector escape paths, power planes, and thermal paths must be designed together. Because the verified material is distributor-focused and does not expose the full manufacturer specification set, all unreported values remain explicitly marked for validation rather than inferred.
直接替换替代料： BCM56870A0KFSBG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
BCM56850A2KFSBG
✅ 直接替换📋 参考替代料（不在目录中）
BCM56224B0KPBG
✅ 直接替换📋 参考替代料（不在目录中）
BCM56870A0KFSBG 最大额定值与电气特性
| Product Type | Ethernet switch controller |
| Switching Capacity | 3.2 Tbps |
| Port Configuration | 32 x 100G |
| 接口 | PCIe |
| Product Family | BCM56870 |
| Manufacturer | Broadcom |
| Device Classification | Ethernet interface controller |
| Package Identifier | KFSB |
BCM56870A0KFSBG kfsb 引脚配置指南
BCM56870A0KFSBG（kfsb 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： BCM56870A0KFSBG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
BCM56870A0KFSBG 适用于 6 应用s: 100G Ethernet Aggregation, Top-of-Rack Ethernet Switching, Data-Center Interconnect, Enterprise Switch Line Cards, High-Port-Density Network Equipment, Network Processor Interface Platform.
100G Ethernet Aggregation
BCM56870A0KFSBG fits a 100G aggregation design because the verified record identifies a 32 x 100G multilayer-switch configuration and 3.2 Tbps switching capacity. The controller can serve as the central switching element between high-speed line-card ports and a host or fabric connection. The design must still validate supported SerDes modes, PHY compatibility, packet-processing features, and thermal performance against the official Broadcom documentation.
推荐
Top-of-Rack Ethernet Switching
The BCM56870A0KFSBG is a candidate for top-of-rack equipment where many 100G-class ports must be consolidated in a compact line card. Its verified 3.2 Tbps and 32 x 100G description supports that architecture, while the PCIe interface provides a system-level connection. Board designers must plan high-speed layer transitions, power delivery, clocking, and enclosure airflow around the manufacturer's unreported electrical and thermal limits.
推荐
Data-Center Interconnect
In a data-center interconnect platform, BCM56870A0KFSBG can provide the switching core for high-bandwidth links between servers, storage fabrics, and network equipment. The 3.2 Tbps headline capacity and 32 x 100G configuration make it relevant to aggregation-heavy systems, but application throughput still depends on packet size, fabric policy, buffering, host software, and physical-layer design. Protocol and firmware support must be verified before selection.
推荐
Enterprise Switch Line Cards
BCM56870A0KFSBG is suitable for an enterprise switch line card requiring a high-density 100G port arrangement. The device can be integrated with compatible SerDes PHYs, optical modules, clocks, and a host processor through the verified PCIe connection. Designers should not infer pin compatibility from the KFSB identifier alone; the official package drawing, pin table, power requirements, and reference design must control the layout.
推荐
High-Port-Density Network Equipment
The verified 32 x 100G description makes BCM56870A0KFSBG relevant to equipment designed to consolidate many high-speed network connections. Such systems benefit from centralized packet forwarding, but they also demand careful lane allocation, signal-integrity analysis, and synchronized clock distribution. Because the supplied records do not state supported media types or port modes, optical and copper transceiver choices require separate compatibility verification.
推荐
Network Processor Interface Platform
BCM56870A0KFSBG can serve as the switching interface between a network processing subsystem and multiple high-speed external links. The PCIe interface identified by the distributor record supports system integration, while the 3.2 Tbps switching class addresses high-volume traffic movement. Integration requires validation of PCIe generation and lane requirements, host-driver behavior, shared-memory interfaces, firmware ownership, and thermal performance using official Broadcom materials.
推荐
工程参考数据： BCM56870A0KFSBG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | BCM56850A2KFSBG | BCM56224B0KPBG |
|---|---|---|---|
| Brand | Broadcom | Broadcom | Broadcom |
| Package | KFSB | KFSB - package match claimed; official footprint verification required | KFSB - package match claimed; official footprint verification required |
| Product Family | BCM56870 | BCM56850 | BCM56224 |
关键差异点
- Higher verified switching headline capacity （对比 BCM56850A2KFSBG)
- Explicit 100G port-density positioning （对比 BCM56224B0KPBG)
- Verified PCIe-connected interface positioning （对比 BCM56850A2KFSBG)
设计说明
Treat all high-speed lanes as a controlled-impedance signal-integrity problem. Confirm the official SerDes lane mapping, reference-plane continuity, connector escape geometry, via transitions, and layer stack before routing. Do not infer lane behavior from the 3.2 Tbps headline value; use the manufacturer pinout and interface guidance, then validate the completed board with suitable test equipment.
Build the power tree from verified regulator, rail, sequencing, current-limit, and decoupling requirements rather than from the distributor description. The supplied data does not state supply voltage or power consumption, so no capacitor value or current budget can be responsibly selected here. Request the official electrical specification table and use worst-case traffic, temperature, and transient conditions when defining the power architecture.
The 3.2 Tbps switching class indicates a demanding networking ASIC, but the verified records provide no thermal resistance, maximum junction temperature, or package dimensions. Before layout, obtain the official package and thermal data, then calculate worst-case dissipation with actual traffic and ambient conditions. Validate copper spreading, heat-sink interface, airflow, and enclosure temperature rather than assuming the KFSB identifier provides a thermal solution.
Keep the switching controller, clocks, SerDes devices, memory, power regulators, and high-speed connectors in a placement that minimizes loop area and preserves continuous return paths. Use the manufacturer's reference layout when available. Because the verified data does not include a complete pinout or recommended land pattern, do not freeze the PCB footprint or component placement until the official package drawing and pin table are obtained.
The most significant procurement and design risk is treating a related Broadcom MPN as interchangeable merely because it has a similar suffix or appears in a comparison page. BCM56850A2KFSBG and BCM56224B0KPBG require independent verification of pinout, switching capacity, port modes, SerDes support, power, package, thermal limits, and software. Use a formal manufacturer-approved cross-reference before making a substitution.
合规信息
The supplied distributor snippets do not provide verified RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for BCM56870A0KFSBG.
