CS8952-CQ - 10/100 Ethernet PHY | Cirrus Logic | 100-TQFP
MPN: CS8952-CQ ✓ AktifCS8952-CQ Ringkasan
An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts parallel controller-facing signals into physical network signals and receives incoming physical-layer signals for delivery to the MAC. The CS8952-CQ belongs to the interface-IC hierarchy, where a PHY sits beneath the Ethernet MAC and above the physical copper or fiber medium. Its MII interface supports both 10 Mb/s and 100 Mb/s designs, while its pseudo-ECL interface is intended for external 100BASE-FX optical modules.
The adaptive receive equalizer is optimized for immunity to noise and near-end crosstalk, and the manufacturer describes receiver operation over cable lengths exceeding 160 m under suitable conditions. The device also emphasizes low transmit jitter, with a published feature value below 400 ps. These characteristics make the PHY applicable to network interface cards, Ethernet switches, repeaters, and embedded equipment requiring a parallel MAC interface rather than a modern serial PHY interface.
Internally, the CS8952-CQ is a CMOS physical-layer IC combining 10BASE-T and 100BASE-X functions. Its operating modes can be tailored for low-latency 100BASE-TX repeaters, switches, and MII-based network interface cards. Control and status registers provide access to operating characteristics, while the MII handles parallel data transfer and interconnects with compatible 10 Mb/s or 100 Mb/s Media Access Controllers.
Typical applications include legacy Ethernet network interface cards, 100BASE-TX switching equipment, 100BASE-FX optical links using external fiber modules, industrial control networking, and legacy embedded Ethernet equipment. For copper designs, magnetic-interface components and a correctly terminated network transformer are required. Fiber implementations also require an external optical transceiver compatible with the CS8952-CQ pseudo-ECL interface.
When laying out a CS8952-CQ board, treat the MII, clock, power, and analog network paths as separate high-speed and potentially noisy domains. Place input and output decoupling capacitors close to the device, route the MII clock carefully, and follow the reference layout and component-selection guidance in the manufacturer datasheet. Maintain short return paths and appropriate isolation between the digital controller interface and copper or fiber media interfaces.
This product page combines the CS8952-CQ ordering information, package details, electrical coverage, drop-in family options, comparison data, and practical Ethernet interface design guidance. It is intended to help engineers identify whether the legacy MII-based CrystalLAN transceiver remains suitable for a specific 10 Mb/s or 100 Mb/s network design before placing the final order.
Alternatif penggantian untuk CS8952-CQ — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
CS8952T-CQ
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
CS8952-IQZ
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
CS8952-CQZ
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
CS8952-CQ Rating Maksimal & Karakteristik Listrik
| Product Type | 10BASE-T and 100BASE-X Ethernet physical-layer transceiver |
| Supported Data Rates | 10 Mb/s and 100 Mb/s |
| Copper Ethernet Support | 10BASE-T and 100BASE-TX |
| Fiber Ethernet Support | 100BASE-FX through an external optical module |
| Controller Interface | Media Independent Interface (MII) |
| Optical Module Interface | Pseudo-ECL |
| Tegangan Pemuat | 5 V |
| Process Technology | CMOS |
| Receive Equalization | Adaptive equalizer optimized for noise and NEXT immunity |
| Maximum Stated Cable Length | Greater than 160 m |
| Transmit Jitter | Less than 400 ps |
| Commercial Temperature Range | 0 °C to 70 °C |
| Paket | 100-pin TQFP, 14 mm × 14 mm |
| Tipe Mounting | Surface mount |
| Evaluation Support | CDB8952 evaluation board |
CS8952-CQ 100-pin tqfp, 14 mm × 14 mm Diamant Konfigurasi Panduan
Konfigurasi pin untuk CS8952-CQ (100-pin tqfp, 14 mm × 14 mm pakai pakai). IC digital ini termasuk GPIO, antarmuka komunikasi (UART, SPI, I2C), dan pin kuasa. Lihat datasheet produsen untuk fungsi pin alternatif dan opsi konfigurasi. Penting untuk desain sistem pengemasan dan PCB.
Tidak ada data diatribut pin yang tersedia untuk CS8952-CQ.
Lihat ke: datasheet produk untuk konfigurasi pin penuh.
Aplikasi Umum
CS8952-CQ cocok untuk 6 aplikasis: Legacy 100 Mb/s Ethernet Network Interface Cards, 100BASE-TX Ethernet Switching Equipment, 100BASE-FX Fiber Interface Modules, Low-Latency 100BASE-TX Repeaters, Embedded MII-Based Ethernet Equipment, Industrial Control and Test Ethernet.
Legacy 100 Mb/s Ethernet Network Interface Cards
The CS8952-CQ fits a parallel MII-based network interface card that must terminate 100BASE-TX copper at 100 Mb/s. Its dedicated Ethernet PHY function, 10 Mb/s and 100 Mb/s support, and 5 V supply provide a clear interface boundary between the Media Access Controller and the physical medium. The adaptive equalizer targets noise and near-end crosstalk immunity, while the manufacturer specifies transmit jitter below 400 ps. A compatible MII controller, network transformer, line-side filtering, and careful separation of analog and digital routing remain essential. The CS8952 is particularly relevant when maintaining an established MII-based board rather than redesigning around a serial Ethernet PHY.
Direkomendasikan
100BASE-TX Ethernet Switching Equipment
The CS8952-CQ can serve as the copper Ethernet physical layer in a legacy 100BASE-TX switching design operating at 100 Mb/s. Its MII provides parallel communication with a switching controller, while its adaptive receive equalizer is designed to improve immunity to noise and near-end crosstalk over extended cable runs. The 100-pin TQFP package supports integration on a multilayer PCB, although the relatively large footprint requires careful planning for signal length and power distribution. The design should follow the manufacturer’s reference layout, use the specified line-interface components, and verify MII timing margins between the CS8952-CQ and the controlling ASIC or FPGA.
Direkomendasikan
100BASE-FX Fiber Interface Modules
The CS8952-CQ supports 100BASE-FX applications by providing a pseudo-ECL interface for an external fiber optic transceiver. This arrangement separates the Ethernet PHY functions from the physical optical conversion and is useful in industrial or telecommunications equipment that retains an MII-based controller architecture. The CS8952 handles 100 Mb/s signaling while the external module performs optical conversion, allowing the system to reuse a common controller design for copper and fiber variants. Board implementation requires controlled impedance, short pseudo-ECL routing, suitable grounding, and isolation from the MII clock and data paths. The complete optical module must be electrically compatible with the interface described in the Cirrus Logic datasheet.
Direkomendasikan
Low-Latency 100BASE-TX Repeaters
The CS8952-CQ is suitable for a low-latency 100BASE-TX repeater because its operating modes can be tailored for repeater use and its 100 Mb/s Ethernet function covers the required link rate. The MII provides a structured path for data, control, status, and clock signals between the transceiver and the repeater’s controlling logic. The adaptive receive equalizer helps the receiver cope with noise and near-end crosstalk, an important consideration when copper links approach the manufacturer’s stated capability of more than 160 m. The implementation must preserve clock and data timing, provide a compliant copper interface, and account for the transceiver’s 5 V supply when budgeting board power and thermal performance.
Direkomendasikan
Embedded MII-Based Ethernet Equipment
The CS8952-CQ can be integrated into legacy embedded equipment that retains an MII rather than using RMII, RGMII, or a serial Ethernet interface. It supports both 10 Mb/s and 100 Mb/s operation, allowing one physical-layer design to cover two common Ethernet rates. The 100-pin TQFP package is appropriate for multilayer industrial control, test, or communications equipment with enough board area for a 14 mm × 14 mm footprint. Designers should establish deterministic MII clock routing, provide multiple supply decoupling paths, and separate MII logic from the copper media section. Firmware and hardware revision control should also include the PHY’s control and status registers because timing and operating-mode configuration remain part of the interface contract.
Direkomendasikan
Industrial Control and Test Ethernet
The CS8952-CQ can provide a 10/100 Mb/s Ethernet physical layer in industrial control or test equipment built around an MII-compatible controller. The 5 V device combines 10BASE-T, 100BASE-TX, and 100BASE-FX support, while the adaptive equalizer helps maintain copper-link performance in environments where cable noise and interference require additional margin. The commercial 0 °C to 70 °C ordering option targets general commercial equipment, so applications with wider environmental requirements should review an appropriate ordering variant. Layout must provide controlled media-side routing, solid grounding, and stable MII timing, while the enclosure and external cable installation should be evaluated for EMC risks that cannot be solved solely by the PHY’s internal equalizer.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk CS8952-CQ — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Consider CS8952T-CQ when it is the documented ordering option that matches the required temperature, qualification, lead, and lifecycle constraints while retaining the same CS8952 function. Consider CS8952-IQZ when its environmental grade is appropriate for the installation and its ordering details satisfy the system requirements. CS8952-CQZ is another closely related family candidate, but finish, qualification, packing, and lifecycle details must be checked before substitution. No cross-brand equivalent is established here because modern PHYs commonly use different digital interfaces and packages. For any same-family replacement, compare the complete 100-terminal pinout, MII timing, register behavior, supply requirements, thermal limits, qualification, and current production status.
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | CS8952T-CQ | CS8952-IQZ | CS8952-CQZ |
|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) |
| Brand | Cirrus Logic Inc. | Cirrus Logic Inc. | Cirrus Logic Inc. | Cirrus Logic Inc. |
| Ethernet Data Rates | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s | 10 Mb/s and 100 Mb/s |
| Copper Ethernet Support | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX | 10BASE-T and 100BASE-TX |
| Fiber Ethernet Support | 100BASE-FX via external optical module | 100BASE-FX via external optical module | 100BASE-FX via external optical module | 100BASE-FX via external optical module |
| Controller Interface | Media Independent Interface (MII) | Media Independent Interface (MII) | Media Independent Interface (MII) | Media Independent Interface (MII) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Transmit Jitter | Less than 400 ps | Less than 400 ps | Less than 400 ps | Less than 400 ps |
Diferensiator Kunci
- Supports copper and fiber media within one MII-based PHY (vsCS8952-IQZ)
- Commercial-temperature ordering option (vsCS8952-IQZ)
- Low published transmit jitter (vsCS8952T-CQ)
Catatan Desain
Route the MII clock as a short, continuous source-synchronous path and maintain the clearances specified in the Cirrus Logic CS8952_DS206F1 reference layout. Place the MII interface circuitry away from the copper-media and pseudo-ECL sections where practical. When assigning the 100 package terminals, use the datasheet pin-description table as the controlling authority and verify every supply, ground, control, status, and media-side connection before releasing the PCB.
The CS8952-CQ operates from 5 V and includes a high-speed Ethernet interface in addition to analog line-side circuitry. Place the manufacturer-recommended bypass capacitors directly at the relevant supply pins, provide a low-impedance ground reference, and keep switching-current return loops away from the MII and media-side signal paths. Validate the final rail tolerance and startup behavior at the system level rather than assuming that a nominal 5 V source automatically satisfies all device requirements.
Do not substitute an RMII, RGMII, or other serial Ethernet PHY without redesigning the digital interface; the CS8952-CQ uses the parallel MII. For 100BASE-FX, do not connect fiber optics directly to the PHY: use an external optical module compatible with the pseudo-ECL interface. Also verify the network transformer, termination, filtering, and cable-side component values against the manufacturer application circuit rather than copying a generic Ethernet magnetics set.
Informasi Konformitas
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements were identified for the exact CS8952-CQ ordering option. Confirm these requirements with the manufacturer before regulated production release.
