Guest Editorial Selected Papers From the IEEE Asia Pacific Conference of Circuits and Systems 2018 and the IEEE International Conference on Electronics, Circuits and Systems 2018 This issue includes selected papers presented at the IEEE Asia Pacific Conference of Circuits and Systems (APCCAS) 2018 that was held in Chengdu, China, on 26xe2x80x9330 October 2018 and the IEEE International Conference on Electronics, Circuits and Systems (ICECS) 2018 that was held in Bordeaux, France, on 9xe2x80x9312 December 2018. As the flagship conferences of the IEEE Circuits and Systems Society (CASS) in IEEE Regions 8 and 10, respectively, these conferences welcome contributions across the themes within the scope of the Society, including analog, digital and mixedsignal electronics, signal processing, power electronics, communication theory, sensors, circuit theory, and nonlinear circuits and systems.

Electronic System Level Design of Heterogeneous Systems: a Motor Speed Control System Case Study Although SystemC and its AMS extensions are widely promoted for the design of heterogeneous systems, very few complete cases studies are actually available. In this work, we present a digital and an analog version of a motor speed controller, and detail various modeling approaches. In the digital version, the executable specification is refined to a TLM virtual prototype that runs SW code on a QEMU emulated RISCV, to study the effect of HWSW design decisions on the physical system dynamics. In the analog version, the controller equation is mapped to a SystemC AMS model and refined from the discretetime to the continuoustime domain. By simulating this system, we illustrate the effectiveness of SystemC and SystemC AMS for heterogeneous design space exploration. The example is available at https:gricadgitlab.univgrenoblealpes.frtimapublicnewcas2019