BCM5482A1KFB Dual-Port Gigabit Ethernet PHY | Broadcom
Teilenummer: BCM5482A1KFB ✓ AktivBCM5482A1KFB Übersicht
An Ethernet PHY converts between a digital MAC-side interface and analog copper-cable signaling. The BCM5482A1KFB integrates two physical-layer channels, allowing one component to serve two Ethernet ports while reducing board area in IP phones, access equipment, industrial controllers, and other multiport systems. Its dual-port architecture can reduce the number of discrete PHY packages required on a board.
The BCM5482A1KFB supports 10, 100, and 1000 Mb/s rates and is compatible with IEEE devices operating in half-duplex and full-duplex configurations. This broad rate support lets a product design accommodate legacy 10BASE-T and 100BASE-TX links while retaining Gigabit Ethernet capability. The integrated SerDes also connects the PHY channels to digital network processors or switching silicon.
Clock timing can be adjusted to compensate for board-trace delays required by the RGMII specification. This feature is particularly useful when the PHY and MAC are separated by a routed interface or when propagation delay through a multilayer board would otherwise affect timing margins. The adjustment capability supports more practical placement of high-speed digital circuitry on space-constrained boards.
Low-power operation is a central design benefit for dual-port PHYs because each active channel continuously performs line coding, signal conditioning, and cable diagnostics. The device is suited to IP phone uplinks, industrial networking equipment, customer-premises equipment, and embedded dual-Ethernet systems where package size, port density, and interface timing are important design constraints.
For implementation, follow the Broadcom BCM5482 documentation for power sequencing, magnetic-component selection, termination, clock configuration, and the exact pin assignments. Preserve the recommended high-speed layout practices around the RGMII interface and place input, output, and decoupling connections according to the reference design to avoid signal-integrity degradation.
This page combines the device’s dual-port Gigabit Ethernet capabilities with practical selection guidance, verified source links, interface considerations, and design guidance. It is designed to help engineers identify the correct operating conditions and board-level integration requirements before committing a BCM5482A1KFB-based Ethernet interface to production.
Drop-in-Alternativen für BCM5482A1KFB – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernBCM5482A1KFB Grenzwerte & elektrische Eigenschaften
| Product Type | Dual-port 10/100/1000BASE-T Ethernet PHY transceiver with SerDes |
| Number of Ports | 2 ports |
| Supported Data Rates | 10 Mb/s, 100 Mb/s, and 1000 Mb/s |
| Duplex Operation | Half-duplex and full-duplex |
| Digital Interface | RGMII |
| Clock Timing Adjustment | Adjustable to compensate for RGMII board-trace delays |
| Cable Standard | 10/100/1000BASE-T |
| IEEE Compatibility | IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab |
| Package Type | 121-pin plastic ball grid array |
| Montageart | Surface mount |
| Power Architecture | Low-power dual-port integration |
| SerDes Integration | Integrated SerDes |
BCM5482A1KFB 121-pin plastic ball grid array Pinbelegungsleitfaden
Pinbelegung für BCM5482A1KFB (121-pin plastic ball grid array-Gehäuse). Dieses analoge Bauteil verfügt über Eingangs-, Ausgangs- und Versorgungspins. Offset-Null-, Kompensations- und Enable-Pin-Konfigurationen entnehmen Sie dem Herstellerdatenblatt. Ideal für Signalaufbereitung und Verstärkerschaltungen.
Keine detaillierten Pinbelegungsdaten verfügbar für BCM5482A1KFB.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
BCM5482A1KFB ist geeignet für 6 Anwendungs: IP Phone Uplink, Industrial Ethernet Gateway, Access Equipment Uplink, Network Interface Controller, Embedded Dual-Ethernet Controller, Ethernet Test and Measurement.
IP Phone Uplink
The BCM5482A1KFB fits an IP phone that needs two copper-network connections while keeping the PCB compact. One channel can serve a primary network uplink while the second supports a secondary connection, pass-through, or equipment-specific Ethernet function. The device’s dual 10/100/1000BASE-T capability accommodates 10, 100, and 1000 Mb/s network links, while integrated SerDes reduces the number of external interface components. Its RGMII clock adjustment also helps address PCB routing delay between the PHY and host controller.
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Industrial Ethernet Gateway
The BCM5482A1KFB is suitable for an industrial gateway that bridges local equipment to a copper Ethernet backbone. Two integrated PHY channels provide a compact implementation for separate network segments without requiring two large multi-pin packages. Support for 10, 100, and 1000 Mb/s links allows the same design to connect both legacy and Gigabit infrastructure. Low-power dual-port integration is valuable when the gateway has a constrained thermal envelope or limited board area.
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Access Equipment Uplink
Access terminals, customer-premises equipment, and compact network appliances can use the BCM5482A1KFB when two Ethernet ports are required near the edge of the network. Its half-duplex and full-duplex operation across 10, 100, and 1000 Mb/s provides compatibility with a broad range of endpoint speeds. The 121-pin PBGA arrangement supports high interconnect density, while integrated SerDes and adjustable RGMII timing help engineers develop a repeatable host-interface layout.
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Network Interface Controller
The BCM5482A1KFB can provide the copper-facing side of a network interface controller or switching subsystem. Its SerDes connection supports a digital host architecture, while the adjustable RGMII clock permits compensation for board propagation delay. The device is appropriate where a system must offer both 100BASE-TX and 1000BASE-T connectivity over compact PCB space. Designers should implement the Broadcom timing and reference-layout guidance to preserve signal integrity at the host interface.
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Embedded Dual-Ethernet Controller
An embedded controller requiring two wired-network channels can use the BCM5482A1KFB to reduce PHY component count and routing congestion. The package supports 10BASE-T, 100BASE-TX, and 1000BASE-T links, enabling equipment to operate alongside both legacy and high-speed infrastructure. Its integrated dual-port architecture is useful in control cabinets and compact automation equipment, where surface-mount area is limited and predictable thermal behavior is important.
Empfohlen
Ethernet Test and Measurement
The BCM5482A1KFB can form the network-facing section of portable test equipment or communication analyzers that need two copper ports. Supporting 10, 100, and 1000 Mb/s makes it possible to connect the instrument to a broad range of network equipment for configuration, loopback, and diagnostic workflows. The low-power dual-port integration helps conserve space and energy, while RGMII timing adjustment supports layouts where the PHY must be separated physically from the measurement controller.
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Technische Referenzdaten für BCM5482A1KFB – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Package | 121-pin plastic ball grid array |
| Brand | Broadcom |
| Port Count | 2 ports |
| Supported Data Rates | 10 Mb/s, 100 Mb/s, and 1000 Mb/s |
| Duplex Modes | Half-duplex and full-duplex |
| Digital Interface | RGMII with adjustable clock timing |
| Integrated SerDes | Yes |
| Cable Compatibility | 10/100/1000BASE-T |
| IEEE Standards | IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab |
| Power Characteristics | Low-power dual-port integration |
Wichtigste Unterscheidungsmerkmale
- Two copper Ethernet physical layers in one package (vs. Single-port Ethernet PHY)
- Broad copper-link rate support in each integrated channel (vs. 100BASE-TX-only PHY)
- Adjustable RGMII timing (vs. PHY without RGMII delay adjustment)
Designhinweise
Route RGMII data and clock traces on a continuous ground plane with controlled impedance and matched lengths. Keep the clock away from switching power nodes and analog magnetics, and avoid vias or plane transitions on high-speed nets where possible. The BCM5482A1KFB supports adjustable clock timing for board-trace delay, but compensation should supplement—not replace—careful topology, return-path continuity, and signal-integrity verification.
Decouple each supply rail close to its package power balls using the capacitance and placement specified by Broadcom. Preserve the recommended power-up and power-down sequence, and account for inrush when both PHY channels are enabled. Estimate supply-headroom demand from the manufacturer’s worst-case operating current for the selected port rates, then verify regulator tolerance, startup behavior, and thermal rise across the complete enclosure.
Do not infer that any dual-port Gigabit Ethernet PHY is a drop-in replacement. A valid substitution must match the 121-pin package, ball assignment, power rails, RGMII timing, control interface, reset behavior, and management requirements. In particular, the related BCM5482A2KFB should not be selected as a drop-in part without a documented manufacturer or distributor cross-reference confirming those conditions.
Follow the Broadcom reference circuit for the line-side network interface, including the recommended isolation or magnetics arrangement, termination, and protective-network placement. Keep high-current Ethernet return currents controlled and provide the intended chassis or surge-current path to the network interface. Validate conducted and radiated emissions because PHY clocking, high-speed digital routing, and external magnetics can create coupling paths if their return-current paths are poorly controlled.
Compliance-Informationen
The available manufacturer and distributor sources do not provide explicit compliance declarations for this ordering code. Confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status with Broadcom before production release.
