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100BASE-T1 Link Won't Come Up: A Vendor-Neutral Checklist
A 100BASE-T1 link that will not come up is almost never a mystery, but the answers on the web are written per silicon vendor and do not transfer. This is the ordered bring-up checklist that holds regardless of which PHY, switch or SoC you have: physical layer first, then the PHY over MDIO, then the master and slave pairing, then the causes of a link that comes up and drops. The standards and tooling claims trace to IEEE 802.3 task force records, the Linux ethtool and kernel documentation or published test material. Written by the GSAS Micro Systems engineering team in India.
100BASE-T1 Media Converters: How to Choose One
Search for a 100BASE-T1 media converter and you get SKU pages that document their own DIP switches, plus a pile of copper-to-fibre converters that have nothing to do with single-pair automotive Ethernet. This is the selection guide neither publishes: what the box does at the PHY layer, when a converter is the wrong box, and the nine criteria that decide fitness, each written as a question to put to the supplier rather than a specification we invented. Standards claims trace to IEEE 802.3 task force records and the public OPEN Alliance specifications. Written by the GSAS Micro Systems engineering team in India.
10BASE-T1S and PLCA: Multidrop Ethernet Explained
10BASE-T1S is the one member of the T1 single-pair Ethernet family that keeps a shared medium, and PLCA is the reconciliation sublayer that stops the nodes on it from colliding. This article covers what IEEE 802.3cg standardises, how the beacon and transmit opportunities schedule a cycle, the node count and segment length figures the OPEN Alliance interoperability test suite works to, and the failure modes that put a segment quietly back into contention while every link still looks up. Written by the GSAS Micro Systems engineering team in India for teams bringing up multidrop segments on the bench.
ADAS Sensor Data Logging: Bandwidth Budgets That Add Up
Every page that tells you an ADAS test vehicle produces terabytes a day states the headline and skips the arithmetic, so you cannot redo it for your own sensor set. This article publishes the arithmetic instead: one formula, every table row derived on the page, a worked eight-hour drive that chains those rows into a sustained write rate, a media count and an offload window, and the five places bandwidth budgets go wrong. Written by the GSAS Micro Systems engineering team in India.
Automotive Data Loggers: Capture Without Loss
Search for an automotive data logger and the results split into cheap OBD dongles at one end and enterprise ADAS recorders at the other, with nothing in between explaining the engineering that decides whether you lose frames. This is the loss budget end to end: mirror oversubscription upstream of the logger, encapsulation overhead on the capture path, sustained write rate against burst rate, rotation stalls, and storage arithmetic worked in full so you can redo it with your own numbers instead of trusting ours. Written by the GSAS Micro Systems engineering team in India.
Automotive Ethernet Connectors: H-MTD, MATEnet, MQS
An ECU arrives on the bench with a connector nobody has a mate for, and the day is gone. Search the family names and you get connector product pages that describe their own part and stop there. This article puts the families side by side in one table using only what their public pages state, then makes the point those pages leave out: the IEEE link segment definition, not the connector, is what sets reach and loss limits, and shielding is a channel decision rather than a preference. Written by the GSAS Micro Systems engineering team in India.
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Upcoming Webinars
Siemens EDA EBS Expert Series: 6 Free PCB Design Webinars (Jul-Aug 2026)
Siemens EDA is running six free EBS Expert Series webinars from 22 July to 27 August 2026, covering HyperLynx PI DC Drop analysis, Xpedition DRC, Xpedition EDM and PLM integration, EDX, and Starpoints/Tiebars net shorting. GSAS, an authorized Siemens EDA engineering partner in India, is highlighting all six for Indian PCB design teams.
Two Arm Keil MDK Webinars This Summer: DevOps and Edge AI for Indian Cortex-M Teams
Arm is running two free live Keil MDK webinars this summer: DevOps with Keil MDK on 23 June and edge AI with ModelNova Fusion Studio on 21 July. What Cortex-M teams in Bengaluru, Hyderabad, Pune, Chennai, Mumbai, and Delhi NCR should know, shared by GSAS, Arm's authorized partner in India for Arm Development Tools.
From Discovery to Production: The Modern PCB Design Journey in Siemens Xpedition: for Indian Teams
Siemens' Xpedition walkthrough 'From discovery to production' traces a single connected PCB journey, AI-assisted circuit discovery, cloud-connected tuning and simulation, AI-assisted command prediction, real-time supply-chain analysis, online design reviews, and manufacturability analysis with price estimation. Here is what that flow means for PCB design teams in Bengaluru, Pune, Chennai, Hyderabad, Mumbai and Delhi NCR, and how GSAS can share it when you ask.
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