What is an E-Marker and How Does It Work?

An E-Marker (electronic marker) is a chip that is used in the latest USB connector iteration, USB Type-C, to communicate between power source and power sink devices. The chip is used to communicate with connected devices to ensure safe data and power delivery to and from the source and sink. The E-Marker provides the cable characteristics including the cable length, the maximum supported current and voltage, the type of USB signal, the vendor and product ID, any alternate mode support, and much more. An E-Marker is required on all USB Type-C cables that support 5 amps and/or exceed 60 watts of power carrying capability. USB Type-C cables that are expected to have data transfer rates above 480 Mbps, or High-speed USB 2.0, are also required to have an E-Marker chip embedded in the connectors of the cables. Applications that exceed 480 Mbps fall in the USB 3.1 realm, meaning any USB 3.1 cable is going to, with very minimal exceptions, be required, by the USB-IF community, to include an E-Marker in the Type-C cable.

You may also like

  • 摘录看新闻网站
  • 很赞同的一个普通人活法的说法
  • 121.jpg, Jan 2024 英国开个公司具体摘录
  • 天龙八部的人生,其实也是作者世界的体现
  • 社会中的十个潜规则,很有道理
  • giffgaff配合5元随身wifi一行代码实现每6个月自动发送一次短信
  • 目前很多省份的社保买了很不划算,那么怎么买才划算呢?
  • 五胡乱华135年历史,最近学习了解这里,摘录于此