psk-study.hashnode.devEthernet📘 Ethernet 1) Concept Ethernet is the most widely used wired communication standard in local area networks (LAN). It allows computers, servers, and embedded systems to exchange data over a shared network. PC ↔ Switch ↔ Router ↔ Embedded Device ↔ Ind...Nov 6, 2025·3 min read
psk-study.hashnode.devCAN (Controller Area Network)📘 CAN (Controller Area Network) 1) Concept CAN is a multi-node serial communication bus designed for reliability and real-time messaging in embedded systems. It is used in automotive ECUs, industrial control, robots, drones, medical devices, and aer...Nov 6, 2025·3 min read
psk-study.hashnode.devCSI-2 (Camera Serial Interface 2)📘 CSI-2 (Camera Serial Interface 2) 1) Concept CSI-2 is a high-speed serial interface used to transfer image data from a camera sensor to a processor (MCU/SoC/ISP). The “2” indicates that it is the second-generation camera interface standard defined...Nov 6, 2025·3 min read
psk-study.hashnode.devI2C (Inter-Integrated Circuit)📘 I2C (Inter-Integrated Circuit) 1) Concept I2C is a two-wire serial communication bus used to connect multiple devices. It is commonly used for sensors, EEPROMs, PMICs, RTCs, touch controllers, and other low-speed peripherals. SPI: faster, requires...Nov 6, 2025·3 min read
psk-study.hashnode.devXIP (Execute In Place) with QSPIXIP (Execute In Place) with QSPI 1) Concept XIP (Execute In Place) allows a processor (MCU or SoC) to execute program code directly from external flash memory, without copying it to internal SRAM first. When using QSPI Flash for firmware storage, XIP...Nov 6, 2025·3 min read