CS8952-IQ - 10/100 Ethernet PHY Transceiver | Cirrus Logic
部品番号: CS8952-IQ ✓ 生産中CS8952-IQ 概要
An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts between digital MAC-layer data and electrical signals carried over twisted-pair or optical media. The CS8952-IQ belongs to the physical-layer IC hierarchy within network interface ICs. Its CMOS implementation provides 3.3 V and 5 V interface operation, while its integrated transceiver functions reduce the external circuitry required around an Ethernet controller.
The CS8952-IQ includes an adaptive equalizer designed to improve noise immunity and near-end crosstalk margin, supporting extended cable-length operation. Its transmit jitter is specified below 400 ps, a useful timing characteristic for dependable 100BASE-TX packet transmission. The device supports both 10BASE-T and 100BASE-TX copper links and 100BASE-X connection to an external optical transceiver, allowing one PHY design to cover multiple media options.
The 100-pin TQFP-100 package provides separate digital, analog, clock, and media-related connections, giving the designer access to the full transceiver interface. Its architecture is intended for systems where a dedicated PHY is preferable to integrating Ethernet media access into a microcontroller. External magnetics, termination, filtering, and an appropriate transceiver or connector remain necessary for each physical implementation.
Typical uses include industrial control networks, embedded factory equipment, communications equipment, legacy 10/100 Ethernet adapters, and instrument interfaces. In a 100BASE-TX design, the PHY connects the Ethernet MAC through its digital interface and drives the line through a network transformer and filtering network. In a 100BASE-FX implementation, the 100BASE-X interface can connect to an external fiber optic transceiver.
PCB implementation should keep the digital interface, analog supply rails, and high-speed media paths properly partitioned. Place filtering and termination close to the device, maintain a continuous ground plane, and follow the pin-description table and recommended application circuit in the Cirrus Logic CS8952 datasheet when assigning tracks and decoupling.
This page organizes the CS8952-IQ’s transceiver capabilities, package information, practical application roles, qualification guidance, and same-footprint alternatives into a practical engineering reference. It also identifies where a replacement must be checked against voltage levels, timing, media support, and the complete pin-assignment table before use on an existing PCB.
ドロップイン代替品: CS8952-IQ — 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。
CS8952-CQ
✅ ドロップイン価格はお問い合わせください
データシートを見る →CS8952-CQZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
CS8952-IQZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
CS8952-IQZR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
CS8952T-IQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
CS8952-IQ 最大定格＆電気的特性
| Product Type | Ethernet physical-layer transceiver |
| Ethernet Standard | IEEE 802.3 |
| Copper Media Support | 10BASE-T and 100BASE-TX |
| Fiber Media Support | 100BASE-X |
| Nominal Data Rate | 10 Mbps and 100 Mbps |
| Process Technology | CMOS |
| Transmit Jitter | <400 ps |
| Receiver Equalization | Adaptive equalizer |
| Equalizer Benefit | Extended-length operation with noise and NEXT immunity |
| 電源電圧 | 3.3 V and 5 V |
| パッケージ | 100-pin TQFP |
| Package Dimensions | 14 mm x 14 mm |
| 実装タイプ | Surface mount |
| Media Interface | Media Independent Interface |
CS8952-IQ 14 mm x 14 mm ピン配置ガイド
CS8952-IQ (14 mm x 14 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: CS8952-IQ.
詳細は データシート をご参照ください。
主な用途
CS8952-IQ の用途: 6 件s: Industrial 10/100 Ethernet Control Systems, 100BASE-FX Fiber Backbone Interface, Embedded Ethernet Communications Equipment, Legacy 10BASE-T Network Adapters, Test and Measurement Ethernet Interfaces, Factory Automation and Sensor Gateways.
Industrial 10/100 Ethernet Control Systems
The CS8952-IQ fits industrial controllers that require a dedicated IEEE 802.3 physical layer for 10BASE-T or 100BASE-TX links. Its adaptive equalizer is designed to improve noise immunity and near-end crosstalk margin over extended cable lengths, while transmit jitter below 400 ps supports dependable 100-Mbit signaling. The 100-pin TQFP separates the digital Ethernet interface and analog media functions sufficiently for careful board partitioning. In a practical implementation, the PHY connects to the system Ethernet controller through the Media Independent Interface, while a suitable network transformer and filtering network connect the copper media pins. This makes the device appropriate for factory equipment, environmental monitoring stations, and industrial access units that use 10/100 Ethernet instead of a newer rate standard.
おすすめ
100BASE-FX Fiber Backbone Interface
The CS8952-IQ can support a 100BASE-FX network through its 100BASE-X interface and an external optical transceiver. Its less-than-400-ps transmit jitter provides a useful margin for stable 100-Mbit operation, while the adaptive receiver equalizer helps the copper-side receiver tolerate noise and near-end crosstalk. The device is appropriate where an embedded controller must connect across a longer fiber segment or where copper cabling would be impractical. The optical module performs optical-electrical conversion, while the CS8952-IQ supplies the Ethernet physical-layer functions and Media Independent Interface connection. PCB implementation should isolate the 100BASE-X route from digital signals and follow the manufacturer’s 100BASE-X reference circuit for component selection and interface timing.
おすすめ
Embedded Ethernet Communications Equipment
The CS8952-IQ is suitable for embedded communications equipment that separates the Ethernet MAC from the physical medium. Supporting both 10BASE-T and 100BASE-TX allows one design to accommodate legacy 10-Mbit infrastructure and faster 100-Mbit links. Its CMOS transceiver implementation operates from 3.3 V and 5 V, providing flexibility when the surrounding controller and interface sections use different supply domains. The 100-pin TQFP also exposes dedicated media and digital sections for controlled routing. For gateways, protocol analyzers, serial-to-Ethernet products, and legacy network adapters, the device provides adaptive equalization for extended copper links and very low transmit jitter. External magnetics and filtering remain part of the physical network interface and should be implemented as shown in the manufacturer application diagrams.
おすすめ
Legacy 10BASE-T Network Adapters
The CS8952-IQ can serve legacy 10BASE-T equipment that must interoperate with a Media Independent Interface-based Ethernet controller. Its integrated 10BASE-T function avoids requiring a separate PHY when the end product only needs 10-Mbit copper connectivity. The same device also supports 100BASE-TX and 100BASE-X, which is useful when one product family must cover several physical media. The adaptive equalizer strengthens receiver performance against noise and near-end crosstalk, and transmit jitter below 400 ps remains well suited to the supported data rates. Designers of industrial adapters, terminal equipment, and legacy test instruments should follow the pin-description table for digital assignments and use the recommended copper-media network to preserve isolation, impedance, and filtering requirements.
おすすめ
Test and Measurement Ethernet Interfaces
The CS8952-IQ is appropriate for test and measurement equipment that needs deterministic access to a 10/100 Ethernet physical layer. Its transmit jitter specification of less than 400 ps provides a useful basis for reliable laboratory and field-test links, while the adaptive equalizer helps preserve receiver operation over extended cable runs where noise and near-end crosstalk are present. The Media Independent Interface allows the PHY to be paired with an FPGA, communications controller, or dedicated test controller. The 100-pin TQFP package exposes separate digital and analog sections, enabling careful grounding and controlled impedance routing. Typical uses include protocol analyzers, industrial test consoles, and service equipment. Timing, supply sequencing, and the external network implementation should follow the Cirrus Logic datasheet rather than assumptions based on a generic Ethernet PHY.
おすすめ
Factory Automation and Sensor Gateways
The CS8952-IQ can connect factory automation equipment and sensor gateways to existing 10/100 Ethernet networks. The adaptive equalizer’s emphasis on noise immunity and near-end crosstalk margin is useful in industrial environments where cables run near motors, switching equipment, and long cable bundles. Its support for 10BASE-T and 100BASE-TX allows designers to maintain compatibility with both established 10-Mbit infrastructure and higher-speed collection networks. The device communicates with a controller or communications processor through its Media Independent Interface, while external network components provide the required copper-media interface. Its 3.3 V and 5 V operation and 100-pin TQFP package allow integration into multi-voltage embedded systems, provided that supply decoupling, grounding, and analog isolation follow the manufacturer’s reference layout.
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: CS8952-IQ — 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 | CS8952-CQ | CS8952-CQZ | CS8952-IQZ | CS8952-IQZR | CS8952T-IQ |
|---|---|---|---|---|---|---|
| Brand | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic |
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) |
| Ethernet Standard | IEEE 802.3 | IEEE 802.3 | IEEE 802.3 | IEEE 802.3 | IEEE 802.3 | IEEE 802.3 |
| Copper Media | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX |
| Fiber Media | 100BASE-X | 100BASE-X | 100BASE-X | 100BASE-X | 100BASE-X | 100BASE-X |
| Nominal Data Rates | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps | 10 Mbps and 100 Mbps |
| Receiver Equalizer | Adaptive | Adaptive | Adaptive | Adaptive | Adaptive | Adaptive |
| Process Technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
主な差別化要因
- Supports three physical media modes in one PHY （vs CS8952-CQ)
- Low transmit jitter supports stable 100-Mbit links （vs CS8952-IQZ)
- Adaptive receiver equalization improves copper-link margin （vs CS8952-IQZR)
設計ノート
Separate the Ethernet media paths from the digital MII, clock, and control signals on the PCB. Place the external filtering and termination components close to their associated CS8952-IQ pins, and avoid routing high-speed media traces beneath unrelated digital or power circuitry. A continuous ground plane helps provide a controlled return path. Confirm every 100-pin connection against the manufacturer pin-description table rather than relying only on the physical package outline.
Do not substitute another CS8952 suffix solely because the component fits the same 100-pin TQFP outline. Compare the ordering code, operating-temperature range, qualification status, electrical limits, MII timing, and complete pin-assignment table. A suffix can change commercial or qualification conditions even when the Ethernet rates and package remain unchanged. This is particularly important for industrial equipment operating across extended temperature ranges or for regulated end markets.
Treat copper and 100BASE-X connections as controlled-impedance signal paths. Use the manufacturer’s recommended application circuit to select the network components and connection topology, and keep switching regulators, high-current traces, and clock-generating circuitry away from the analog media section. The CS8952-IQ specifies transmit jitter below 400 ps, but that performance cannot compensate for an incorrectly terminated, poorly grounded, or externally contaminated channel.
Decouple each applicable supply rail directly at the CS8952-IQ using the capacitance and placement specified by the Cirrus Logic application circuit. Verify that the 3.3 V and 5 V rails meet the device’s voltage tolerance, sequencing, noise, and startup requirements. Avoid sharing a narrow return path between analog media current and digital circuitry because shared impedance can disturb the Ethernet transmitter and receiver.
コンプライアンス情報
No product-specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status was established for the CS8952-IQ.