BCM5325EKQMG - Five-Port 10/100 Ethernet Switch | Broadcom
부품 번호: BCM5325EKQMG ✓ 활성BCM5325EKQMG 개요
An Ethernet switch controller is an interface integrated circuit that connects multiple copper-network ports to a host or uplink while buffering and forwarding Ethernet frames. Within the product hierarchy, BCM5325EKQMG is a five-port 10/100 Ethernet switch, also described as a ROBOswitch, and belongs to the broader category of interface ICs and network semiconductors. Its integrated architecture reduces the number of discrete PHY and switching components required around a network processor or communications processor.
Key characteristics include five 10/100 network ports, a sixth-port feature-enhanced counterpart described in the Broadcom BCM5325E product brief, on-chip packet buffering, integrated PHY transceivers and MACs, and address management. The device uses 0.18-µm CMOS technology and complies with IEEE 802.3, IEEE 802.3u, and IEEE 802.3x. The QFP-128 package is identified as a 14 mm by 20 mm surface-mount package.
The BCM5325E family combines the functions of a high-speed switching system in one silicon device. IEEE 802.3 defines Ethernet framing, IEEE 802.3u defines Fast Ethernet operation, and IEEE 802.3x defines full-duplex flow control. These functions allow the switch fabric to coordinate traffic among attached network nodes while offloading basic packet handling from the system processor.
Typical applications include SOHO routers, residential gateways, embedded gateways, Ethernet switches, and industrial or commercial network equipment with copper ports. It is especially relevant to compact designs that need several 10/100 interfaces but do not require multi-gigabit Ethernet. The integrated PHYs and switch fabric can simplify board partitioning while preserving a clear path from each copper port through the MAC and packet-buffer layers.
A primary design consideration is the legacy 10/100-only interface: it suits established Fast Ethernet products but cannot provide the throughput of 1000BASE-T ports. PCB implementation should follow the Broadcom pin and layout guidance, provide appropriate Ethernet magnetics and line-side routing, and validate signal integrity, power sequencing, thermal performance, and loopback behavior before production.
This page combines Broadcom product-brief information, package and standards details, replacement guidance, application analysis, and practical design notes. It also highlights the difference between the BCM5325M-based BCM5325EKQMG and the feature-enhanced, pin-compatible BCM5325E six-port implementation for engineering planning.
드롭인 대체품: BCM5325EKQMG — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
BCM5325E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
BCM5325EKQMG 최대 정격 & 전기적 특성
| Device Type | Five-port 10/100 Ethernet switch controller |
| Ethernet Port Count | 5 copper ports plus 1 uplink port |
| Ethernet Speed | 10/100 Mb/s per port |
| Switch Fabric | Non-blocking |
| Integrated Functions | Packet buffers, PHY transceivers, MACs, address management, and switch fabric |
| Process Technology | 0.18 µm CMOS |
| 패키지 | QFP-128, 14 mm × 20 mm |
| 실장 유형 | Surface mount |
| Ethernet Compliance | IEEE 802.3 |
| Fast Ethernet Compliance | IEEE 802.3u |
| Flow Control Compliance | IEEE 802.3x |
| RoHS 상태 | Compliant |
| Lead-Free Status | Lead free |
| Product Family | ROBOswitch |
| Interface Category | Ethernet interface IC |
BCM5325EKQMG qfp-128, 14 mm × 20 mm 핀 구성 가이드
BCM5325EKQMG(qfp-128, 14 mm × 20 mm 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: BCM5325EKQMG.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
BCM5325EKQMG 적합 용도: 6 애플리케이션s: SOHO Router, Residential Gateway, Embedded Ethernet Gateway, Industrial Ethernet Switch, Network Print Server, SOHO Network Switch.
SOHO Router
BCM5325EKQMG fits a SOHO router that needs five 10/100 Mb/s copper LAN ports plus an uplink connection. Its integrated PHY transceivers, MACs, packet buffers, address management, and non-blocking switch fabric consolidate the Ethernet front end around the router processor. The five-port 10/100 feature set supports traditional Fast Ethernet clients, while IEEE 802.3, IEEE 802.3u, and IEEE 802.3x handling covers core Ethernet framing, Fast Ethernet, and flow-control functions. Designers should reserve the QFP-128 footprint, follow the manufacturer land pattern, and validate the external magnetics and line-side routing.
추천
Residential Gateway
BCM5325EKQMG is appropriate for a residential gateway that combines several wired Ethernet endpoints with an uplink to a broadband access circuit. Its integrated MAC and PHY functions reduce the external component count compared with a design built from separate switch and PHY devices, while the non-blocking fabric supports simultaneous traffic handling across five 10/100 ports. The sixth connection can be assigned according to the product architecture. Firmware development should verify port mapping, address-management behavior, auto-negotiation, and flow control under realistic traffic loads.
추천
Embedded Ethernet Gateway
The BCM5325EKQMG is well suited to embedded gateways requiring five Fast Ethernet service ports and a system-facing connection. Its 0.18-µm CMOS switch controller combines packet buffers, PHYs, MACs, address management, and a non-blocking switch fabric in a single QFP-128 device, simplifying the software-facing network architecture. Because the integrated ports are limited to 10/100 Mb/s, designers should use an additional Gigabit interface when the backhaul or aggregation link requires higher bandwidth. Hardware validation should include thermal testing at maximum port activity and cable-length margin.
추천
Industrial Ethernet Switch
BCM5325EKQMG can support compact industrial Ethernet switching equipment built around 10/100 Mb/s copper links. The integrated switch fabric and packet buffers allow several ports to operate without requiring a separate forwarding engine for basic frame handling, and IEEE 802.3x support provides the basis for flow-control behavior. Its QFP-128 package requires careful thermal and copper-area planning in enclosed equipment. Qualification should include worst-case traffic, sustained link activity, power-supply tolerance, grounding, and isolation checks appropriate to the installation environment.
추천
Network Print Server
A network print server can use BCM5325EKQMG to provide multiple 10/100 connections for shared printing, local storage, and management access. The integrated PHYs and MACs create a consistent hardware interface for the print-server processor, while packet buffering helps absorb short traffic bursts when several local clients transmit simultaneously. The five-plus-one topology can divide user ports from an uplink to a broader office network. Design validation should cover sustained packet transfers, cable diagnostics, auto-negotiation behavior, and lossless operation under congested traffic conditions.
추천
SOHO Network Switch
BCM5325EKQMG matches a standalone SOHO switch requiring five 10/100 user ports and an uplink to another switch or router. Integrating the PHYs, MACs, packet buffers, address management, and switch fabric simplifies the board and reduces the number of interfaces that the supervising processor must handle directly. The non-blocking fabric supports full-speed traffic across active links when the product configuration permits it. Before release, test store-and-forward behavior, port isolation, loop handling, link-flap recovery, thermal performance, and the behavior of unused or uplink-configured connections.
추천
추천 제품 요약
엔지니어링 참조 데이터: BCM5325EKQMG — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | BCM5325E |
|---|---|---|
| Package | QFP-128 (14 mm × 20 mm) | QFP-128 (14 mm × 20 mm) |
| Brand | Broadcom | Broadcom |
| Device Type | Five-plus-one-port 10/100 Ethernet switch controller | Six-port feature-enhanced Ethernet switch |
| Port Configuration | 5 network ports plus 1 uplink | 6-port configuration |
| Ethernet Speed | 10/100 Mb/s | 10/100 Mb/s |
| Process Technology | 0.18 µm CMOS | 0.18 µm CMOS |
| Integrated Functions | Packet buffers, PHYs, MACs, address management, and non-blocking switch fabric | Packet buffers, PHYs, MACs, address management, and non-blocking switch fabric |
| IEEE Compliance | IEEE 802.3, IEEE 802.3u, and IEEE 802.3x | IEEE 802.3, IEEE 802.3u, and IEEE 802.3x |
| Pin Compatibility | BCM5325M-based five-plus-one configuration | Pin-compatible with BCM5325M |
주요 차별점
- Maintains the established BCM5325M-based switching architecture (vs BCM5325E)
- Integrates the complete basic Ethernet switching front end (vs BCM5325E)
- Supports the required Fast Ethernet standards (vs BCM5325E)
설계 노트
Assign the PCB footprint directly from the Broadcom QFP-128 package drawing for the BCM5325EKQMG ordering code. Preserve the prescribed land pattern, pad dimensions, solder-mask clearance, and exposed lead geometry; do not substitute the footprint of a similarly named switch solely from the family name. Provide the specified ground and supply connections at the locations shown in the manufacturer layout guidance, and route all PHY differential pairs as controlled-impedance nets to the Ethernet magnetics.
Separate Ethernet line-side routing from clocks, switching nodes, and other high-speed signals. Maintain the manufacturer-specified spacing around magnetics and isolation components, use continuous nearby ground references, and avoid adding test pads or routing changes adjacent to sensitive PHY nets without checking the reference layout. After assembly, verify differential impedance, pair length balance, return-path continuity, and isolation resistance before performing 10 Mb/s and 100 Mb/s link tests.
Decouple each Broadcom-specified supply domain at its QFP-128 pins with the capacitance and ESR characteristics called out in the device documentation. Confirm power-up ordering, voltage tolerances, ramp behavior, and current limits against the exact BCM5325EKQMG electrical specification before releasing the schematic. Since the manufacturer document entry is family-level, individual rail voltages, current consumption, and sequencing requirements must not be inferred from the BCM5325E summary alone.
Do not treat BCM5325E as automatically firmware-identical to BCM5325EKQMG. Although Broadcom describes the six-port BCM5325E as feature-enhanced and pin-compatible with BCM5325M, a conversion can still change port mapping, initialization, management access, address-table behavior, and thermal loading. Compare the complete register lists, reference firmware, port assumptions, and board test procedures, then revise the host software and production test limits before using the alternative in a released design.
Estimate worst-case dissipation using the actual rail voltage, per-domain current, and switching activity required by the finished product rather than a single nominal operating condition. Compare the resulting junction-temperature estimate with the device-specific thermal limits and the QFP-128 land pattern. In a compact gateway or switch, provide adequate copper around the package while preserving the manufacturer layout, and validate temperature rise with all five 10/100 ports carrying sustained traffic.
규정 준수 정보
The exact-order-code listing identifies BCM5325EKQMG as lead free and RoHS compliant. No vehicle-grade qualification claim is identified for this Ethernet controller.
