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Internship - Hardware Robustness for SMI Register Interfaces in Automotive PHY Chips

nxp
Companynxp
CategoryEngineering
LocationEindhoven
Remote
EmploymentNot stated
LevelIntern
SalaryNot stated by the employer
Posted21 Jul 2026
Last verified10 Aug 2026
SourceEmployer ATS (workday)
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Description
Hardware Robustness for SMI Register Interfaces in Automotive PHY Chips Duration : 6 months Location : Eindhoven, Netherlands (hybrid) Background and Motivation Automotive PHY devices expose their configuration and status registers over the Serial Management Interface (SMI), a two-wire serial bus (MDC / MDIO) defined by IEEE 802.3 Clause 22/45. In the current implementation, the SMI link carries no inherent data-integrity protection: there is no parity bit, no CRC, and no acknowledgment mechanism in the baseline protocol. In a harsh automotive EMC environment, single-bit upsets on the MDIO bus can silently corrupt a register write, causing a PHY to enter an incorrect operating mode without any indication to the host. To guard against this, the software driver currently performs write-then-read-back verification and double-read redundancy checks. These software workarounds increase bus utilization, add latency to every configuration transaction, and consume CPU cycles in a safety-critical context. This internship investigates and prototypes hardware-based robustness mechanisms that can detect or correct bit errors on the SMI bus, or within the on-chip register file, transparently to the software layer. What You Will Learn • SMI / MDIO protocol internals at silicon level • Digital RTL design in SystemVerilog (FSMs, protocol wrappers, register-file architectures) • Fault-injection verification and coverage-driven testbench methodology • Professional chip-design workflow: code review, EDA tools Profile • Final-year BSc in Electrical Engineering, Microelectronics, Embedded Systems, or Computer Engineering • Basic digital logic design knowledge; familiarity with at least one HDL (Verilog / SystemVerilog / VHDL) • Analytical, structured approach to trade-off problems; reads technical English comfortably More information about NXP in the Netherlands... LI-f5d0