MagneticsĬhoose RJ45 connector with built-in magnetics. As I pushed through my first working prototypes, I noticed a few factors that hardware engineers should pay attention to while developing a functional ethernet interface: 1. Back then, door access controllers relied on the RS485 and faced limitations in speed and connection stability. I first came across the DP83848C when I was tasked with improvising a door access controller with LAN-capable communication. It supports Media Independent Interface (MII), Reduced Media Independent Interface (RMII) and Standard Network Interface (SNI), thus supporting communications with a broad range of microcontrollers. It is driven by a 3.3V supply and takes the form of either a 48 pins QFP or a 40 pins QFN package. The DP83848C is a popular ethernet physical layer transceiver that is the gateway between the microcontroller and the external LAN network. For an embedded system, the physical layer of the network is key to ensuring a stable foundation for upper layer protocols. The results often involve unstable connections between the microcontroller and the ethernet.ĭespite the hype about wireless communications like Bluetooth, WiFi or other peer-to-peer protocols taking over the IoT, wired-based networks are still an essential feature in certain industries. However, if you fail to understand the LAN and its underlying interface, you’ll do a poor job designing with a DP83848C Ethernet PHY.

It’s possible to be an awful Warcraft player and still design great PCBs. Friends would gather and start battling each other from different computers within a house, with cries of victories reverberating through the walls. Online gaming was often limited to Starcraft or Warcraft, played over the Local Area Network (LAN).

In my university days, high-speed internet was non-existent.

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