BCM56524B0KFSBG - 24-Port 108 Gbps Switch Fabric | Broadcom
MPN： BCM56524B0KFSBG ✓ 啟用中BCM56524B0KFSBG 概覽
An Ethernet switch fabric (also called a switch ASIC or switching chipset) is the silicon heart of a managed network switch that moves packets between physical Ethernet ports and uplinks at line rate. Within the broader hierarchy of networking semiconductors (Ethernet switch -> switch fabric -> communication IC -> semiconductor), the BCM56524B0KFSBG sits in the SME/SMB access-switch tier where cost, integration, and feature density matter more than the terabit-scale switching of datacenter spine ASICs. The part targets fixed-configuration 24-port stackable switches, eliminating the need for an external switch controller.
Key features include 24 integrated Gigabit Ethernet MACs, full line-rate layer-2 forwarding, integrated packet buffer memory, and an embedded management subsystem. Broadcom positions the BCM56524x series as a low-power, low-BOM alternative to discrete switch designs, enabling fanless or single-fan 1U switch products. Per the Broadcom product brief, the part supports typical enterprise switching features such as VLAN, QoS, ACLs, and link aggregation, which are exposed via Broadcom's standard SDK to OEM firmware developers.
Typical applications for the BCM56524B0KFSBG include 24-port unmanaged or smart-managed Gigabit switches, SMB access-layer switches with 10G uplink stacking, network appliances, and embedded switching modules. It is also found in industrial Ethernet switches and IP surveillance NVR recorders that require multi-port L2 switching in a compact footprint.
When designing with this device, ensure adequate PCB area for the ball-grid land pattern, proper thermal relief for sustained switching load, and validated reference designs from Broadcom for power-rail sequencing. Use only Broadcom-qualified DDR memory and PHYs to avoid link-training issues on dev boards and production hardware.
直接替換替代品，適用於 BCM56524B0KFSBG — 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。
BCM56524B0KFSBL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM56524B0IFSBG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM56514B0KFSBG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCM56524B0KFSBG 最大額定值與電氣特性
| Product Type | Ethernet Switch Fabric / Switch ASIC |
| Manufacturer | Broadcom |
| Switching Capacity | 108 Gbps |
| Number of Ports | 24 Gigabit Ethernet ports |
| Layer Support | Layer 2 / basic Layer 3 |
| Package Type | BG (ball-grid array, surface mount) |
| 安裝類型 | Surface Mount |
| Integrated PHYs | No (PHY-less; requires external GbE PHYs) |
| Integrated CPU | Yes (embedded management CPU) |
| Packet Buffer | Integrated shared-memory packet buffer |
| Supported Speeds | 10/100/1000 Mbps |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| Switch Series | BCM56524x |
BCM56524B0KFSBG bg (ball-grid array, surface mount) 腳位配置指南
BCM56524B0KFSBG（bg (ball-grid array, surface mount) 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： BCM56524B0KFSBG.
請參閱 資料表 以查看完整腳位配置。
典型應用
BCM56524B0KFSBG 適用於 6 應用s: 24-Port Gigabit SMB Access Switch, Stackable Enterprise Edge Switch, IP Surveillance NVR / PoE Switch, Industrial Ethernet Switch, Network Appliance / SMB Router, Wireless Controller / Unified AP Switch.
24-Port Gigabit SMB Access Switch
The BCM56524B0KFSBG is the principal switching ASIC for 24-port fixed-configuration Gigabit Ethernet switches targeting SMB and small enterprise networks. Its 108 Gbps fabric sustains wire-speed forwarding on all 24 GbE ports simultaneously, eliminating head-of-line blocking. The integrated CPU, packet buffer, and Broadcom SDK shorten OEM firmware development cycles. Typical designs add 2-4 SFP+ 10G uplink ports via companion 10G PHYs and run fanless in a 1U chassis powered by a single 12V supply. The BCM56524B0KFSBG's low BOM cost vs discrete alternatives makes it the de facto silicon for sub-$300 retail smart-managed switches.
推薦
Stackable Enterprise Edge Switch
The BCM56524B0KFSBG supports stacking architectures where multiple 24-port switches are cascaded via 10G stacking links. Its 108 Gbps fabric provides ample headroom for stacked uplinks while supporting QoS, VLAN, and ACL features required at the enterprise edge. Pairing the BCM56524B0KFSBG with Broadcom's stacking software enables hitless failover and unified management across stack members. The device's embedded packet memory architecture minimizes external DRAM requirements, reducing both BOM cost and PCB complexity in space-constrained 1U switches deployed at enterprise closet wiring.
推薦
IP Surveillance NVR / PoE Switch
The BCM56524B0KFSBG powers 24-port PoE switches that aggregate video streams from IP cameras into NVR recording servers. Its wire-speed L2 switching ensures no frame loss at peak recording load, while VLAN support segregates camera traffic from management networks. Combined with external PoE PSE controllers (often connected via I2C/GPIO to the BCM56524), the switch can deliver 30W per port to IEEE 802.3at cameras. Surveillance NVR integrators favor the BCM56524B0KFSBG because of its low power consumption, fanless operation capability, and Broadcom's long-term silicon roadmap for enterprise network equipment.
推薦
Industrial Ethernet Switch
For industrial-grade switches deployed in factories, outdoor cabinets, or transportation networks, the BCM56524B0IFSBG (industrial temperature variant of the BCM56524B0KFSBG) provides the same 108 Gbps switching capacity with extended thermal support. OEM designs pair the switch ASIC with industrial-rated PHYs, conformal-coated PCBs, and hardened power supplies. Typical deployments include ring-redundant industrial Ethernet (using ERPS/G.8032 implemented in firmware), Modbus/TCP pass-through, and deterministic QoS for SCADA traffic. The Broadcom SDK provides the industrial protocol stack modules that firmware teams integrate.
推薦
Network Appliance / SMB Router
The BCM56524B0KFSBG serves as the switching core of all-in-one SMB gateway appliances that combine a 24-port GbE switch, a router, and a firewall in a single 1U chassis. The embedded CPU handles routing protocols (OSPF, BGP), stateful firewall inspection, and VPN termination. By integrating switching, the appliance vendor avoids the cost and latency of an external switch chip connected over PCIe or GMII. The BCM56524B0KFSBG's standard SDK and reference router firmware accelerate time-to-market for unified threat management (UTM) appliances targeting the sub-100-user SMB segment.
推薦
Wireless Controller / Unified AP Switch
The BCM56524B0KFSBG anchors wireless controller appliances that aggregate traffic from campus Wi-Fi access points. Its VLAN tagging and QoS prioritization ensure that voice and video traffic from wireless handsets receive low-latency forwarding. Multi-SSID WiFi networks require per-VLAN QoS and ACL features that the BCM56524B0KFSBG supports natively. Combined with PoE PSE controllers, the same chassis can power 24 PoE+ access points while switching their uplink traffic. This convergence of switching + PoE + wireless control in one appliance is a common SMB networking pattern.
推薦
推薦產品摘要
工程參考資料，適用於 BCM56524B0KFSBG — 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 | BCM56524B0KFSBL | BCM56524B0IFSBG | BCM56514B0KFSBG |
|---|---|---|---|---|
| Brand | Broadcom | Broadcom - same | Broadcom - same | Broadcom - same |
| Package | BG (BGA) | BG (BGA) - same | BG (BGA) - same | BG (BGA) - same |
| Switching Capacity | 108 Gbps | 108 Gbps - same | 108 Gbps - same | Approximately 96 Gbps |
| Number of GbE Ports | 24 | 24 - same | 24 - same | 24 - same |
| Integrated PHYs | No (PHY-less) | No - same | No - same | No - same |
| Temperature Grade | Commercial | Commercial - same | Industrial/Extended - higher | Commercial - same |
| Embedded CPU | Yes | Yes - same | Yes - same | Yes - same |
| Layer Support | L2 / basic L3 | L2 / basic L3 - same | L2 / basic L3 - same | L2 only - lower tier |
主要差異化特點
- Same 108 Gbps fabric across the FSBG and IFSBG siblings (對比BCM56524B0IFSBG)
- Higher-tier feature set vs BCM56514 family (對比BCM56514B0KFSBG)
- Integrated CPU eliminates external management processor (對比Discrete switch + external SoC designs)
設計說明
The BCM56524B0KFSBG uses a high-pin-count BG (BGA) package. Follow Broadcom's reference PCB stackup exactly: controlled-impedance traces for SerDes, dedicated ground planes beneath the BGA, and matched-length routing for DDR memory interface. Use a minimum 6-layer PCB with continuous ground on layer 2 to provide reference for high-speed signals. BGA land pattern must use NSMD pads with solder mask defined (SMD) openings per the package pinout frame.
Estimated: at typical 24-port GbE switching load the BCM56524B0KFSBG dissipates approximately 8-12 W. Provide a thermal pad and copper pour area on the PCB top side connected to the BGA ground balls. For fanless 1U designs, use a 50 mm x 50 mm copper pour with 1 oz copper and ensure airflow from front-to-back of the chassis. Verify junction temperature with Broadcom's reference thermal model in the design guide.
Do not substitute third-party PHYs without Broadcom qualification - the BCM56524B0KFSBG's SerDes calibration expects Broadcom BCM54210/BCM54220 family PHYs. Also, do not omit the external DDR memory or substitute it with non-qualified DRAM - the integrated packet buffer performance depends on DDR timing closure. Always validate firmware builds against Broadcom's SDK release notes for your silicon revision.
合規資訊
RoHS and lead-free compliance per Broadcom product page. AEC-Q100 not applicable - this is a networking ASIC, not an automotive-grade part.
