KSZ8841-PMQL - 10/100 Ethernet PCI Controller | Microchip
部品番号: KSZ8841-PMQL ✓ 生産中KSZ8841-PMQL 概要
An Ethernet MAC controller is an interface integrated circuit that manages frame transmission and reception between a computing host and an Ethernet network. The MAC layer identifies network frames and handles access to the communications medium, while the integrated Fast Ethernet physical interface connects that logical function to twisted-pair cabling. In the system hierarchy, the KSZ8841-PMQL belongs to the class of Ethernet interface controllers and network interface integrated circuits used within embedded networking equipment.
The KSZ8841-PMQL provides one 10/100 Base-T/TX port, a 32-bit PCI interface, and a stated PCI operating frequency of 33 MHz. Its IEEE 802.3u compatibility identifies the intended Fast Ethernet protocol generation. The device is also associated with a non-PCI member of the KSZ8841 series, KSZ8841-MQL, which uses a different CPU interface and therefore requires a different host-side design rather than being a universal substitute.
The PCI host interface provides a parallel processor-facing path for moving Ethernet frames between the controller and an embedded PCI system. This makes the device appropriate for legacy or industrial embedded platforms that retain PCI infrastructure but require an integrated 10/100 Ethernet connection. The 128-PQFP package also provides a substantial pin count for the MAC, PCI, clock, reset, power, and physical-network functions represented by this controller.
Typical applications for the KSZ8841-PMQL include PCI-based industrial controllers, embedded communication equipment, network interface adapters, and legacy embedded systems requiring 10/100 Base-T/TX connectivity. The controller can also serve as the foundation for custom PCI network-interface subsystems where a dedicated Ethernet MAC is required instead of a higher-complexity system-on-chip.
Designers should distinguish the standard KSZ8841-PMQL from the industrial-temperature KSZ8841-PMQLI version when selecting the correct ordering code. PCB implementation must follow the manufacturer's 128-pin PQFP pinout and recommended layout guidance, including correct termination, clocking, reset sequencing, and Ethernet physical-layer routing.
This product page combines the manufacturer identification, package information, interface details, comparison candidates, and application guidance needed to evaluate the KSZ8841-PMQL. Request a Quote on this page for current commercial availability, lead time, and supporting documentation.
ドロップイン代替品: KSZ8841-PMQL — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
KSZ8841-PMQLI-TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
KSZ8841-PMQL 仕様
| Product Type | Single-port Ethernet MAC controller |
| Ethernet Speed | 10/100 Base-T/TX |
| Port Count | 1 port |
| Host Interface | 32-bit PCI |
| PCI Interface Frequency | 33 MHz |
| Protocol Compliance | IEEE 802.3u |
| パッケージ | 128-pin PQFP, 14 x 20 mm |
| 実装タイプ | Surface mount |
| Integrated PHY | 10/100 Base-T/TX PHY |
| Industrial-Temperature Variant | KSZ8841-PMQLI |
| Non-PCI Series Member | KSZ8841-MQL |
KSZ8841-PMQL 128-pin pqfp, 14 x 20 mm ピン配置ガイド
KSZ8841-PMQL (128-pin pqfp, 14 x 20 mm パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: KSZ8841-PMQL.
詳細は データシート をご参照ください。
主な用途
KSZ8841-PMQL の用途: 6 件s: PCI Industrial Control Systems, Legacy Embedded Network Adapters, Embedded Communication Equipment, Network-Attached Instrumentation, Embedded Data Acquisition Units, Legacy PCI Networking Platforms.
PCI Industrial Control Systems
The KSZ8841-PMQL fits embedded industrial controllers that retain a PCI host bus and require 10/100 Base-T/TX connectivity. Its 32-bit, 33 MHz PCI interface provides the processor-facing path for Ethernet traffic, while the integrated single-port 10/100 PHY supports direct attachment to the Ethernet physical layer. According to the Microchip Technology manufacturer datasheet, the device is IEEE 802.3u compliant and packaged in a 128-pin PQFP. Industrial designs should use the PMQLI ordering option when the specified industrial temperature range is required.
おすすめ
Legacy Embedded Network Adapters
The KSZ8841-PMQL can support a dedicated network adapter built around an embedded PCI host. Its single-port 10/100 Base-T/TX architecture avoids the need for a multiport Ethernet switch while providing the MAC and physical interface in one controller. The manufacturer datasheet identifies a 32-bit, 33 MHz PCI processor interface and IEEE 802.3u compliance. Board designers must allocate all 128 package positions, implement the specified clock and reset behavior, and follow the recommended Ethernet magnetics and signal-routing layout.
おすすめ
Embedded Communication Equipment
The KSZ8841-PMQL is appropriate for embedded communication equipment that must expose one Fast Ethernet port through a PCI-based system. Its integrated 10/100 Base-T/TX PHY and IEEE 802.3u-compatible MAC reduce the number of dedicated networking components required for that link. With a 32-bit PCI interface operating at 33 MHz, the controller is suited to systems whose host processor already supports PCI. The design should validate host-driver support and the complete interface timing before schematic and PCB release.
おすすめ
Network-Attached Instrumentation
The KSZ8841-PMQL can add a 10/100 Base-T/TX network connection to PCI-based measurement and instrumentation equipment. The single Ethernet port supports remote communication, configuration, or status transfer when the host system already has a compatible PCI bus. The controller’s 32-bit, 33 MHz interface and integrated 10/100 PHY place network-frame handling close to the host. Engineers should account for the 128-pin PQFP footprint and use the manufacturer’s recommended layer stack, clock routing, decoupling, and Ethernet physical-layer layout.
おすすめ
Embedded Data Acquisition Units
The KSZ8841-PMQL is suitable for a PCI-based data-acquisition unit requiring one wired Ethernet connection for data transfer or management. The integrated Fast Ethernet MAC and PHY support a single 10/100 Base-T/TX link without adding a separate Ethernet interface component. According to the Microchip Technology manufacturer datasheet, the device uses a 32-bit, 33 MHz PCI processor interface and is compliant with IEEE 802.3u. The implementation must preserve the controller’s required clocking, reset sequencing, magnetics interface, and published PCB constraints.
おすすめ
Legacy PCI Networking Platforms
The KSZ8841-PMQL targets legacy PCI networking platforms that need an integrated 10/100 Base-T/TX connection rather than a non-PCI Ethernet interface. Its 32-bit, 33 MHz PCI processor interface allows a compatible host processor or PCI bridge to exchange frames with the on-chip Fast Ethernet MAC. The single-port architecture and IEEE 802.3u compliance align with conventional Fast Ethernet equipment. Before production, verify driver availability, interrupt behavior, clock requirements, and the complete 128-pin PQFP land pattern in the manufacturer documentation.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: KSZ8841-PMQL — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | KSZ8841-PMQLI-TR |
|---|---|---|
| Product Type | 10/100 Base-T/TX Ethernet MAC controller | 10/100 Base-T/TX Ethernet MAC controller |
| Brand | Microchip Technology | Microchip Technology |
| Package | 128-pin PQFP (14 x 20 mm) | 128-pin PQFP (14 x 20 mm) |
| Port Count | 1 port | 1 port |
| Ethernet Speed | 10/100 Base-T/TX | 10/100 Base-T/TX |
| Host Interface | 32-bit PCI | 32-bit PCI |
| PCI Interface Frequency | 33 MHz | 33 MHz |
| Protocol Compliance | IEEE 802.3u | IEEE 802.3u |
| Temperature Grade | Standard grade; limits not stated | Industrial-temperature grade |
| Integrated PHY | 10/100 Base-T/TX PHY | 10/100 Base-T/TX PHY |
主な差別化要因
- Integrated PCI Fast Ethernet controller （vs KSZ8841-MQL)
- Single-chip network interface function （vs KSZ8841-MQL)
- Industrial-temperature family option （vs KSZ8841-PMQL)
設計ノート
Assign all 128 PQFP positions using the pin-description table in the Microchip Technology manufacturer datasheet. Place the Ethernet physical-network components, magnetics interface, clock components, and decoupling capacitors according to the manufacturer’s reference layout. Because the package and routing are fixed by the controller architecture, do not derive the footprint from a generic PQFP library or from the related non-PCI KSZ8841-MQL device.
Use the manufacturer datasheet for the exact supply rails, decoupling values, current limits, and power-up requirements because those electrical limits are not reproduced in the available product summary. Keep the 33 MHz PCI clock and Ethernet physical interface electrically controlled through the documented clock and reset arrangement. Confirm host-driver expectations for initialization and power states before finalizing the power architecture.
Treat the Ethernet physical-layer connection as a high-speed routed interface even though the logical data rate is 10/100 Base-T/TX. Follow the manufacturer’s requirements for magnetics, termination, component placement, and trace geometry. Do not substitute the clock, reset, PCI, or PHY connections from the KSZ8841-MQL variant because that member uses a different CPU interface even though it belongs to the same controller family.
Do not treat KSZ8841-PMQLI-TR as automatically interchangeable without checking the production environment and ordering code. It is the documented industrial-temperature version of the PCI-interface controller, whereas KSZ8841-MQL is a non-PCI interface variant. Also avoid assuming that another Ethernet MAC with the same data rate is a drop-in replacement because PCI pin assignments, clocking, reset behavior, and driver requirements must all match.
コンプライアンス情報
The manufacturer product page and datasheet do not provide explicit compliance status in the available information. AEC-Q100 is not applicable because the KSZ8841-PMQL is an industrial embedded Ethernet controller rather than an automotive-qualified device.
