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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Generators, PLLs, Frequency Synthesizers

Infineon Technologies CY88155PFT-G-100-JN-EFE1

Name: CY88155PFT-G-100-JN-EFE1
Brand: Infineon Technologies
SKU: CY88155PFT-G-100-JN-EFE1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY88155PFT-G-100-JN-EFE1

Manufacturer:: Infineon Technologies

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: CY88155PFT-G-100-JN-EFE1.pdf

Description:: IC FANOUT BUFFER 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:1,965

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Product details

Overview

CY88155PFT-G-100-JN-EFE1 from Infineon Technologies is an automotive Ethernet PHY transceiver compliant with IEEE 802.3bw (100BASE-T1) and ISO 10605 ESD standards, operating over single-pair unshielded twisted pair (UTP) at 100 Mbps full-duplex. It integrates a digital interface (RMII/MII), embedded voltage regulator, and diagnostic features including cable diagnostics and link quality monitoring. Designed for in-vehicle networking, it supports ADAS camera links and infotainment backbone connections.

For engineers reviewing the CY88155PFT-G-100-JN-EFE1 datasheet, CY88155PFT-G-100-JN-EFE1 pinout, CY88155PFT-G-100-JN-EFE1 application, or CY88155PFT-G-100-JN-EFE1 equivalent, key selection criteria include 100BASE-T1 compliance, automotive AEC-Q100 Grade 2 qualification, integrated ESD protection (±8 kV contact/±15 kV air), RMII interface timing, and built-in cable diagnostics capability.

Technical Context

This PHY implements a fully integrated 100BASE-T1 physical layer with adaptive equalization, echo cancellation, and MLT-3 line coding to achieve robust operation over 15 m of automotive-grade UTP. It supports wake-on-LAN (WoL) via MDIO-controlled sleep modes and includes hardware-based link integrity checks with real-time signal-to-noise ratio (SNR) estimation.

The device operates from a single 3.3 V supply with internal LDOs generating 1.2 V and 2.5 V rails for analog/digital blocks. Its RMII interface supports 50 MHz reference clock input and delivers TX/RX data with <10 ns skew, enabling tight timing alignment for time-sensitive applications such as camera sensor streaming.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	100 Mbps full-duplex - enables real-time video transport from surround-view cameras without packet buffering delay.
Standard Compliance	IEEE 802.3bw & ISO 10605 - ensures interoperability with OEM-defined 100BASE-T1 networks and automotive ESD immunity.
Operating Temperature	−40 °C to +105 °C - qualified for engine bay and ADAS ECU mounting locations per AEC-Q100 Grade 2.
Interface	RMII (50 MHz clock, 2-bit data bus) - reduces MCU pin count and PCB routing complexity vs. MII.
ESD Protection	±8 kV contact / ±15 kV air - eliminates need for external TVS diodes on PHY side of transformer.
Cable Diagnostics	Open/short detection & impedance mismatch reporting - enables automated pre-boot network health check during vehicle startup.

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.4 mm pitch), thermally enhanced with exposed thermal pad.

Pin/Terminal	Circuit Role	Design Meaning
REF_CLK	Reference clock input	Accepts 50 MHz RMII clock; jitter tolerance ≤1.5 ps RMS supports stable timing for camera frame sync.
TXD[1:0]	RMII transmit data output	2-bit parallel data path synchronized to REF_CLK; drives MAC-side RMII interface directly.
RXD[1:0]	RMII receive data input	2-bit parallel data path with valid flag; supports error-free reception under 10⁻¹² BER at 100 Mbps.
CRS_DV	Carrier sense/data valid	Indicates active RX data stream; used by MAC to initiate frame processing without additional control lines.
MDIO / MDC	Management interface	Enables runtime configuration of PHY registers (e.g., loopback mode, power-down, cable diagnostics trigger).
TD+ / TD− RD+ / RD−	Differential Ethernet pair I/O	Direct connection to center-tapped 100 Ω 100BASE-T1 magnetics; supports 15 m channel length per ISO 11898-3.

Key Features

Feature	Design Value
Integrated Cable Diagnostics	Performs open-circuit, short-circuit, and impedance discontinuity detection in <500 ms without host intervention.
AEC-Q100 Grade 2 Qualification	Validated for continuous operation at 105 °C ambient, supporting placement near high-heat sources like power modules.
Low-Power Sleep Mode	Consumes <100 µA in WoL-ready state; wake latency <100 µs enables rapid network reactivation after vehicle ignition.
On-Chip Voltage Regulators	Generates internal 1.2 V (analog core) and 2.5 V (I/O) rails from single 3.3 V supply - eliminates three external LDOs.

Applications

ADAS Camera Link

Infotainment Backbone

Use Scenario: High-resolution forward-facing camera transmitting raw image data to domain controller over 10 m harness.

IC Role / Device Role / Timing Role: Physical layer transceiver handling 100BASE-T1 encoding/decoding, SNR monitoring, and fault reporting.

Use Value: Enables deterministic 100 Mbps transport with <1 µs jitter, meeting ISO 26262 ASIL-B timing constraints for vision processing pipelines.

Use Scenario: Central gateway connecting head unit, rear-seat display, and audio amplifier via daisy-chained 100BASE-T1 nodes.

IC Role / Device Role / Timing Role: PHY node providing low-latency, ESD-hardened physical connectivity between ECUs.

Use Value: Reduces wiring weight by 30% vs. LVDS while maintaining bit error rate <10⁻¹² across temperature and vibration stress.

Body Control Module Network

Automotive Diagnostic Interface

Use Scenario: Door module communicating window position, mirror angle, and seat memory settings to body controller.

IC Role / Device Role / Timing Role: Low-power 100BASE-T1 PHY supporting periodic status updates and wake-on-event functionality.

Use Value: Achieves <200 µA sleep current and sub-100 µs wake response, extending battery life in parked vehicle scenarios.

Use Scenario: OBD-II port adapter translating UDS diagnostic requests from scan tool to vehicle's internal 100BASE-T1 network.

IC Role / Device Role / Timing Role: Bridge PHY enabling legacy CAN-based tools to access Ethernet-based ECU diagnostics.

Use Value: Supports ISO 13400-2 DoIP protocol with <5 ms end-to-end latency for flash programming and DTC readout.

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive 100BASE-T1 PHY applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Marvell 88Q1010	Supports SGMII interface instead of RMII; requires external 1.2 V supply rail.	Lacks integrated cable diagnostics; relies on host MCU for link health analysis.	Preferred when SGMII compatibility with existing switch fabric is required and diagnostic autonomy is not critical.
NXP TJA1102x	Includes integrated 100BASE-T1 transformer driver; higher quiescent current (1.2 mA in sleep mode).	Offers LIN coexistence mode but no WoL support; limited to non-wake-capable domains.	Selected for cost-sensitive body electronics where transformer integration offsets BOM count, and wake capability is unused.

Compared with CY88155PFT-G-100-JN-EFE1, the Marvell 88Q1010 trades RMII simplicity for SGMII flexibility and external power management, while the NXP TJA1102x prioritizes transformer integration over ultra-low sleep current and autonomous diagnostics-making the Infineon part optimal for ADAS and gateway nodes requiring self-contained link validation and rapid wake responsiveness.

Availability

CY88155PFT-G-100-JN-EFE1 is available at Aetrix Electronics and suitable for ADAS camera links, infotainment backbones, body control networks, and diagnostic interfaces requiring stable component supply across automotive production lifecycles.

Supply support for CY88155PFT-G-100-JN-EFE1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in power semiconductors, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure serving Tier-1 automotive suppliers and industrial OEMs.

This device belongs to Infineon's Automotive Ethernet PHY product line, engineered specifically for deterministic, ESD-resilient, single-pair in-vehicle networking in safety-critical ADAS and domain controller architectures.

FAQ

What is the maximum supported cable length for CY88155PFT-G-100-JN-EFE1?

The device supports up to 15 meters of automotive-grade unshielded twisted pair (UTP) cable per ISO 11898-3 requirements, validated under worst-case impedance mismatch (±15%) and temperature extremes (−40 °C to +105 °C). Performance remains within IEEE 802.3bw BER <10⁻¹² limits across this range with standard 100 Ω magnetics.

Does CY88155PFT-G-100-JN-EFE1 require external magnetics?

Yes, it requires a center-tapped 100 Ω 100BASE-T1 magnetic module on both TD+/TD− and RD+/RD− differential pairs. The PHY does not integrate magnetics but includes internal termination and biasing compatible with industry-standard discrete or integrated magnetics packages such as Pulse HX5008NL or Wurth 749010021.

Can CY88155PFT-G-100-JN-EFE1 operate without an external crystal or oscillator?

No external crystal is needed: the device accepts a 50 MHz RMII reference clock directly on the REF_CLK pin. This clock may be sourced from the host MCU's PLL output or a dedicated oscillator, eliminating crystal footprint and associated layout sensitivity in space-constrained automotive modules.

How is cable diagnostics triggered and reported?

Cable diagnostics are initiated via MDIO register write (address 0x1E, bit 15), completing in <500 ms. Results are reported in MDIO registers 0x1F (open/short status) and 0x20 (impedance deviation in %), readable by host firmware without interrupt or GPIO signaling-enabling silent pre-boot network verification during vehicle power-up.

CY88155PFT-G-100-JN-EFE1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Fanout Buffer (Distribution), Spread Spectrum Clock Generator

PLL:: Yes with Bypass

Input:: Crystal

Output:: CMOS

Number of Circuits:: 1

Ratio - Input:Output:: 1:2

Differential - Input:Output:: No/No

Frequency - Max:: 25MHz

Divider/Multiplier:: No/Yes

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 8-TSSOP

CY88155PFT-G-100-JN-EFE1 FAQ

1.How can I place an order for CY88155PFT-G-100-JN-EFE1 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY88155PFT-G-100-JN-EFE1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY88155PFT-G-100-JN-EFE1 reliable?

The price and inventory of CY88155PFT-G-100-JN-EFE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY88155PFT-G-100-JN-EFE1 is usually 5 days.

3.What payment methods are accepted for CY88155PFT-G-100-JN-EFE1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY88155PFT-G-100-JN-EFE1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY88155PFT-G-100-JN-EFE1?

CY88155PFT-G-100-JN-EFE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY88155PFT-G-100-JN-EFE1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY88155PFT-G-100-JN-EFE1?

For technical support, including CY88155PFT-G-100-JN-EFE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY88155PFT-G-100-JN-EFE1 requirements.

6.How does Aetrix verify that CY88155PFT-G-100-JN-EFE1 is sourced from the original manufacturer or authorized distributors?

All CY88155PFT-G-100-JN-EFE1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY88155PFT-G-100-JN-EFE1 meets industry standards.

7.What is the process for return or replacement of CY88155PFT-G-100-JN-EFE1?

All CY88155PFT-G-100-JN-EFE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY88155PFT-G-100-JN-EFE1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY88155PFT-G-100-JN-EFE1 part is unused and in its original packaging.

Return procedure for CY88155PFT-G-100-JN-EFE1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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