LAN91C96-MS - 10/100 Ethernet Controller | Microchip
MPN： LAN91C96-MS ✓ 啟用中LAN91C96-MS 概覽
An Ethernet controller is an interface IC that connects an embedded host processor to a physical Ethernet network. Within the product hierarchy, the LAN91C96-MS is an Ethernet MAC and physical-layer controller, which is part of a communications interface IC and ultimately a semiconductor. It supports non-PCI systems using Local Bus, PCMCIA, or Motorola 68000 bus interfaces instead of requiring a PCI-compatible host.
Key features include full-duplex switched Ethernet support, enhanced transmit queue management, integrated packet RAM, and support for AUI and twisted-pair network connections. The supplied manufacturer information identifies the LAN91C96 family as integrating most IEEE 802.3 functionality, including MAC protocol handling, physical-layer encoding and decoding, twisted-pair transceiver functions, and link-integrity testing.
The controller addresses legacy embedded platforms that need Ethernet connectivity without a PCI bus. Its local-bus addressing uses A0-A9 and A15 together with active-low nREG, nCE1, nWE, and nOE signals. Word reads from odd byte addresses can return a zero value in the upper byte because that byte is a don't-care under the referenced PCMCIA attribute-memory access rule.
Typical uses include legacy embedded systems, industrial controllers, compact network adapters, PC Card LAN equipment, and custom communication equipment requiring a non-PCI Ethernet interface. The manufacturer also identifies the low-profile TQFP option as suitable for mobile applications such as PC Card LAN adapters, although the verified LAN91C96-MS ordering information identifies a 100-pin QFP package.
Designers should verify the exact PCB footprint, clock source, bus timing, transceiver connections, and power requirements against the manufacturer datasheet before substituting this legacy controller. The -40 °C to 85 °C specification supports industrial-temperature designs, but applications needing a wider commercial range should select a variant with the appropriate documented rating.
This page consolidates verified distributor identification, manufacturer product information, datasheet details, interface features, and package data. It also separates documented facts from unresolved parameters and avoids presenting unspecified pricing, pin names, and competitor compatibility as confirmed engineering data.
直接替換替代品，適用於 LAN91C96-MS — 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。
此系列的變體
與下列產品可直接替換的同系列型號： LAN91C96-MS （相同外形與佔位） — 差異在於 Packet RAM, Supply Voltage.
LAN91C96-MU
✅ 直接替換聯絡詢價
查看資料表 →LAN91C96I-MS
✅ 直接替換📋 參考替代品（不在目錄中）
SMC91C100-Q8
✅ 直接替換📋 參考替代品（不在目錄中）
LAN91C96-MS 規格
| Device Type | LOCAL AREA NETWORK CONTROLLER |
| Technology | CMOS |
| Ethernet Speed | 10/100 Mbps |
| 供應電壓 | 3.3 V |
| 工作溫度 | -40 °C to 85 °C |
| Package Type | QFP-100, green |
| Package Dimensions | 14 x 20 mm |
| 腳位數 | 100 pins |
| 安裝類型 | Surface mount |
| Host Interface | Local Bus, PCMCIA, and Motorola 68000 bus |
| MAC Layer | Integrated |
| Physical Layer Functions | Integrated encoding and decoding |
| Packet RAM | Integrated |
| Duplex Operation | Full duplex |
| Twisted-Pair Transceiver | Integrated |
| AUI Interface Support | Supported |
| Link Integrity Test | Supported |
| Address Signals | A0-A9 and A15 |
| Bus Control Signals | nREG, nCE1, nWE, and nOE |
LAN91C96-MS 14 x 20 mm 腳位配置指南
LAN91C96-MS（14 x 20 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： LAN91C96-MS.
請參閱 資料表 以查看完整腳位配置。
典型應用
LAN91C96-MS 適用於 6 應用s: Legacy Industrial Control Systems, PC Card LAN Adapter, Local-Bus Network Terminal, Embedded Data Acquisition Unit, Motorola 68000 Embedded Platform, Custom Network Interface Card.
Legacy Industrial Control Systems
The LAN91C96-MS fits legacy industrial equipment that needs Ethernet without a PCI bus. Its integrated MAC, physical-layer functions, packet RAM, and support for Local Bus, PCMCIA, and Motorola 68000 host interfaces reduce the external circuitry required around older embedded processors. The documented -40 °C to 85 °C operating range is suitable for many industrial environments, while the 3.3 V supply aligns with conventional embedded logic. Engineers should preserve the original bus timing, address mapping, and transceiver layout rather than assuming every controller in the same family is electrically identical. This is particularly important where the host processor has no native Ethernet MAC and the board must remain compatible with an installed 100-pin footprint.
推薦
PC Card LAN Adapter
The LAN91C96-MS is applicable to PC Card LAN equipment because it combines a PCMCIA host interface with integrated Ethernet MAC and physical-layer functions. Using a controller that includes packet RAM can simplify the data path compared with a design requiring a separate host-side buffer and Ethernet PHY. The manufacturer identifies the low-profile family option as useful for mobile PC Card adapters, while the verified LAN91C96-MS ordering information specifies a 14 x 20 mm, 100-pin QFP package. A new adapter must nevertheless match the card connector signals, attribute-memory behavior, bus timing, and mechanical outline exactly. Particular attention should be given to the documented odd-address word-read behavior before software assumes a meaningful upper byte.
推薦
Local-Bus Network Terminal
The LAN91C96-MS supports a Local Bus network terminal built around a processor that does not provide a native Ethernet interface. Its A0-A9 and A15 address inputs, together with nREG, nCE1, nWE, and nOE control signals, provide a direct path for memory-style host access to controller registers. The integrated packet RAM allows the MAC and host to exchange frames without requiring a separate external Ethernet buffer. For an existing design, the primary advantage is reuse of a proven controller architecture and 100-pin PCB footprint. For a new design, designers should compare host-bus throughput, interrupt behavior, and software-driver effort against a modern platform controller before committing to this legacy interface.
推薦
Embedded Data Acquisition Unit
The LAN91C96-MS can provide network connectivity in an embedded data-acquisition unit designed around a Motorola 68000-family processor. The controller combines the Ethernet MAC and physical layer with packet RAM, while the Motorola 68000 bus interface avoids requiring a PCI peripheral. Its 10/100 Mbps capability is appropriate for supervisory telemetry, configuration transfer, and status reporting where high sustained network throughput is not the dominant requirement. The 3.3 V supply and -40 °C to 85 °C operating range support many industrial designs. Integration must account for bus contention, interrupt latency, packet-buffer ownership, and isolation requirements at the network boundary. A modern controller may offer a simpler software stack, but it will usually require a different host interface and PCB redesign.
推薦
Motorola 68000 Embedded Platform
The LAN91C96-MS is directly aligned with embedded platforms that expose a Motorola 68000 bus and require deterministic register-level Ethernet access. Its integrated MAC, physical layer, packet RAM, and AUI support provide several network-related functions in one 100-pin device. The controller can therefore reduce the number of external chips in a custom embedded network appliance, although its legacy interface requires mature driver and timing knowledge. Designers should check the address-decoding arrangement and the semantics of nREG, nCE1, nWE, and nOE against the processor bus. They should also determine whether the AUI or twisted-pair path is required and preserve the manufacturer's recommended magnetics and termination network.
推薦
Custom Network Interface Card
The LAN91C96-MS can serve as the central Ethernet controller in a custom interface card connected to a proprietary processor bus. Integrating the MAC, physical-layer encoding and decoding, packet RAM, and twisted-pair transceiver reduces the number of discrete interface blocks and shortens the signal path between the host and network medium. The 100-pin QFP package offers a compact surface-mount implementation, but fanout is dense and requires careful routing of address, control, clock, and transceiver signals. Designers should use the manufacturer's reference design and bill of materials for the +5 V operation configuration when adapting the platform. They must also verify the actual -MS power requirements, decoupling, magnetics selection, and isolation strategy rather than inferring them from unrelated LAN91C96 variants.
推薦
推薦產品摘要
工程參考資料，適用於 LAN91C96-MS — 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 | LAN91C96-MU | LAN91C96I-MS | SMC91C100-Q8 |
|---|---|---|---|---|
| Package | QFP-100, 14 x 20 mm | 100-pin TQFP form | 100-pin TQFP or QFP form | 100-pin TQFP form |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Device Type | Non-PCI single-chip Ethernet controller | Ethernet controller | Ethernet controller | Fast Ethernet controller |
| Pin Count | 100 pins | 100 pins | 100 pins | 100 pins |
| Mounting Type | Surface mount | Surface mount | Surface mount | Surface mount |
主要差異化特點
- Supports three legacy host-bus styles in one controller (對比SMC91C100-Q8)
- Documents an industrial operating-temperature range (對比LAN91C96-MU)
- Integrates Ethernet MAC, physical layer, packet RAM, and transceiver functions (對比LAN91C96I-MS)
設計說明
Use the manufacturer Mechanical Information drawing for the exact LAN91C96-MS ordering code to confirm pad geometry, pin-1 orientation, and package tolerances. The verified sources alternately describe the 100-pin device as QFP or TQFP, so a generic 100-pin footprint must not be assumed interchangeable. Route the A0-A9 and A15 address signals, nREG, nCE1, nWE, and nOE buses away from the Ethernet transceiver region and provide a clean, referenced clock network according to the datasheet.
Follow the manufacturer power-decoupling and supply-sequence recommendations for the exact LAN91C96-MS variant. The verified distributor specification identifies 3.3 V operation, while comparison material lists other family members as 5 V devices; consequently, regulator sizing and input-voltage limits must come from the -MS datasheet rather than a family-level assumption. Keep switching or high-current circuitry away from the MAC, clock, and transceiver supply paths.
Place the controller, supporting clock components, and network magnetics according to the manufacturer's reference layout, minimizing loop area and keeping continuous return paths beneath clock and sensitive analog connections. The LAN91C96 includes twisted-pair transceiver functions, so magnetics and protection components should be positioned near the physical network interface while the digital host bus remains separated from those network-side nets.
Do not assume that all LAN91C96 or SMC91C100 order codes are drop-in equivalents. The verified comparison pages identify related 100-pin devices, but they do not fully establish temperature grade, package thickness, clock requirements, bus timing, or power configuration. Before substitution, compare the manufacturer pin lists, electrical characteristics, register behavior, and package drawings, then test the complete network path including auto-negotiation, transmit queue behavior, and error recovery.
合規資訊
The verified sources identify a green QFP-100 package but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The green package description is not treated as proof of regulatory compliance.
