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Optical physical layer adds network interface to Renesas vehicle computer

Mon, May 09, 2022

Renesas has integrated KDPOF’s KD1053 PHY IC and KD9351 fibre optic transceiver (FOT) into the automotive vehicle computer VC4, communication gateway engine control unit (ECU). The VC4 integrates an optical Ethernet interface into our automotive evaluation boards. The 1000BASE-RH transceiver KD1053 and KD9351 FOT is certified to IEEE 802.3bv.

In order to meet the increasing complexity and computation demands of the next generation vehicles, the VC4 communication gateway ECU is intended to be a universal development platform for automotive customers based on the R-Car-S4 SoC.

Optical connectivity solves the challenges posed by electrical interference in vehicles, says KDPOF, thanks to the low weight, low cost and electromagnetic compatibility due to inherent galvanic isolation. “With the integrated KD9351 FOT in combination with the KD1053 PHY IC, we deliver a complete automotive 1000BASE-RHC physical layer,” said Carlos Pardo, CEO and co-founder of KDPOF.

Applications include safe Ethernet backbones, smart antenna modules, and sensor connections for advanced driving assistance system (ADAS) and audio/video.

The KD9351 optical transceiver incorporates the transmission and reception optoelectronics – such as transimpedance amplifier, photodiode, LED driver, and LED – into one single component. The KD9351 optical transceiver operates at 100Mbits per second up to 1Gbits per second. In addition to a small footprint, it benefits from a shorter supply chain and no test duplication with the final test at the Tier 1. The assembly is simplified and the connector offers snap-fit without soldering. The KD9351 reuses low-cost MEMs encapsulation and allows surface mount reflow assembly with 8.0 by 7.0mm LGA components. It is shielded against electromagnetic radiation, added KDPOF. The temperature range, from -40 to +105 degrees C, conforms with harsh automotive environmental requirements.

KDPOF will present latest highlights of the optical in-vehicle network technology at the Automotive Ethernet Congress (01 to 02 June 2022 in Munich, Germany). On 2 June, Carlos Pardo will present “Automotive Optical Ethernet Reaching for 50Gbits per second”.

https://www.kdpof.com

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LEM claims HMSR DA current sensor is a world first

Fri, May 06, 2022

At next week’s PCIM Europe, LEM will introduce what is believed to be the world’s first integrated current sensor with sigma delta bitstream output.

The HMSR DA is the latest member of the HMSR family of robust sensors for measuring DC and AC currents in highly demanding switching power applications in commercial and industrial applications.

The HMSR DA is designed for applications that are prone to noise, distortion and interference and where clean signals are required to avoid “significant problems in case of vibrations, electric noise and electromagnetic noise”.

The sensors are characterised by superior signal share and reduced noise, said LEM, as well as lower cost and a smaller mechanical footprint. HMSR DA will replace more complex and costly alternative systems that would traditionally include a shunt resistor, a digital insulator and a power supply circuit. The integrated sensor is designed for applications where space is at a premium and minimal cost is essential, advised LEM.

Typical applications for the digital output unit include standalone servo drives, robotics, automated guided vehicles (AGVs), CNC machine tools and other applications that demand high resolution output. The HMSR DA sensor offers resolution of 11 to 13 bits and features a 10MHz clock. LEM has announced that it is already working on the next generation of digital integrated circuit sensors which will offer a resolution of 14 to 16 bits and a clock operating above 20MHz.

Analogue versions of LEM’s HMSR range of high insulated, integrated current sensors offer a small and compact current sensor, strong immunity to stray fields, reinforced isolation and a 300kHz bandwidth. The HMSR DA digital integrated circuit sensor will enable engineers to look at new ways of formulating their system design, said LEM. The Sigma Delta bitstream output is easy to use and allows customers to apply filters to adapt the sensor to their specific needs.

http://www.lem.com

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Multi-protocol microcontroller supports Ethernet and Industry 4.0

Wed, May 04, 2022

As industrial environments move towards industry 4.0, it can be difficult to enable seamless industrial connectivity across both time-sensitive and real time communications. To address this, a crossover microcontroller with integrated Gbit time sensitive networking (TSN) switch has been released by NXP.

The i.MX RT1180 crossover microcontroller enables both time-sensitive and industrial real time communications and supports multiple communications protocols. According to NXP, it bridges the gap between existing industrial systems and industry 4.0 systems. It is claimed to be the first crossover microcontroller to include an EdgeLock secure enclave, a pre-configured, self-managed and autonomous on-die security sub-system for robust, system-wide security intelligence for industrial IoT applications.

Package options start from 10 x 10mm BGA, making the i.MX RT1180 one of the smallest real time industrial networking-capable devices, said NXP. It can integrate TSN and industrial networking capabilities into a variety of industrial use cases, including I/O management, motor control, compact motion control or gateway applications.

It can also serve as a network companion chip, providing all required industrial network connectivity to a host processor via scalable connectivity stepping up to seamless Gb direct communication with the host without on-board PHY.

The i.MX RT1180 is also suitable for automotive connectivity applications, which increasingly rely on Ethernet TSN support for both high bandwidth and real time control data. This allows the i.MX RT1180 to act as an intelligent switch between different automotive engine control units (ECUs).

It features dual-core architecture, including an 800MHz Arm Cortex-M7 and Cortex-M33 and is designed for power efficiency with target use cases starting from 250mW and has an integrated PMIC (power management IC) to optimise energy efficiency, as well as reduce board complexity and cost. It has up 5Gbit ports to support the latest TSN standards, as well as multiple industrial real time network protocols, including EtherCAT, Profinet, Ethernet/IP, CC-Link IE or HSR. The i.MX RT1180 is also designed to help OEMs ease device compliance for ISA/IEC 62443-4-1, -4-2.

The microcontroller operates in the extended industrial qualification temperature range (-40 to +125 degrees C).

http://www.nxp.com

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PIC and AVR microcontrollers extend 8-bit families

Fri, Apr 29, 2022

Recognising the increasing market for 8bit microcontrollers, Microchip has added five families to its 8bit PCI and AVR families. In total there are over 60 new devices.

PIC and AVR microcontrollers combine processing power with the ability to easily communicate with other chips and a range of analogue peripherals for configurability without changes to the PCB, said Microchip. They combine ASIC-like capabilities with a simple development experience and can be configured as smart peripheral chips, continued the company.

For example, the MVIO peripheral, including the AVR DD family can be used in systems which use different supply voltages, for example connecting a 5V microcontroller to a 1.8V sensor. The MVIO peripheral on Microchip’s latest 8bit microcontrollers, including the AVR DD family, allows a single port on the microcontroller to operate in a different voltage domain, which eliminates the need for additional external components and negates the need for level-shifting hardware, said Microchip.

For systems which do require a level of speed and response time that is difficult to achieve with software-based processing, Core Independent Peripherals (CIPs) are available across the PIC and AVR product ranges. CPIs can be programmed with MPLAB Code Configurator (MCC) to form a hardware processing chain and create custom peripherals that eliminate software processing cycle times, explained Microchip. For example, a WS2812 LED array, which requires timing to be driven correctly, can be controlled by configuring a super peripheral (consisting of a pulse-width modulator (PWM), a serial peripheral interface (SPI) and the configurable logic cell.

Microchip’s 8bit microcontroller portfolio is pin-to-pin compatible, which allows an alternative PIC or AVR device to be used when more performance is needed or when a customer wants to maximise product availability while minimising redesign requirements.

Microchip offers an ecosystem of hardware and software tools, including its MPLAB X and MPLAB Xpress integrated development environments (IDEs). The portfolio also includes the MPLAB Code Configurator (MCC), which offers an intuitive graphical interface to generate production-ready set up and application code for 8bit microcontroller-based projects.

The latest AVR and PIC 8bit microcontrollers are currently sampling.

http://www.microchip.com

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Optical physical layer adds network interface to Renesas vehicle computer

LEM claims HMSR DA current sensor is a world first

Multi-protocol microcontroller supports Ethernet and Industry 4.0

PIC and AVR microcontrollers extend 8-bit families

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