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TJA1101

Description
Robust, low-power 100BASE-T1 PHY transceiver
File Size1MB,58 Pages
ManufacturerNXP
Websitehttps://www.nxp.com
Download Datasheet View All

TJA1101 Overview

Robust, low-power 100BASE-T1 PHY transceiver

TJA1101B
100BASE-T1 PHY for automotive Ethernet
Rev. 1 — 1 March 2021
Product data sheet
1
General description
The TJA1101B is a 100BASE-T1-compliant Ethernet PHY optimized for automotive use
cases such as gateways, IP camera links, radar modules, driver assistance systems and
back-bone networks. The device provides 100 Mbit/s transmit and receive capability over
a single unshielded twisted-pair cable, supporting a cable length of up to at least 15 m.
The TJA1101B has been designed for automotive robustness and ISO 26262, ASIL-A
compliance, while minimizing power consumption and system costs.
Being ASIL-A compliant, adequate safety features have been implemented to ensure that
ASIL requirements are met at system level. Additional documentation, including a safety
manual, is available on request.
The TJA1101B supports OPEN Alliance TC-10-compliant sleep and wake-up request
forwarding, with an always-on power domain connected directly to the battery supply
without the need for a dedicated voltage regulator.
2
Features and benefits
2.1 General
100BASE-T1 PHY
MII- and RMII-compliant interfaces
Compact 36-pin HVQFN package (6 × 6 mm) for PCB space-constrained applications
ISO 26262, ASIL-A compliant
2.2 Optimized for automotive use cases
Transmitter optimized for capacitive coupling to unshielded twisted-pair cable
Adaptive receive equalizer optimized for automotive cable length of up to at least 15 m
Enhanced integrated PAM-3 pulse shaping for low RF emissions
EMC-optimized output driver strength for MII and RMII
MDI pins meet class IV conducted emission limit as per OPEN Alliance EMC
Specification 2.0
MDI pins protected against ESD to ±6 kV HBM and ±8 kV IEC61000-4-2
MDI pins protected against transients in automotive environment
MDI pins do not need external filtering or ESD protection
Automotive-grade temperature range from -40 °C to +125 °C
Automotive product qualification in accordance with AEC-Q100
Host-configurable MDI polarity
Automated polarity detection and correction
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