« previous next »
Pages: [1]

Author Topic: what is the sense of link control in USB3.0 or PIC express  (Read 12250 times)

Chris

  • Member
  • ***
  • Posts: 7
what is the sense of link control in USB3.0 or PIC express
« on: May 06, 2011, 10:37:07 pm »
hello;
In many high speed serial bus protocal,link control is important.Befor and after a packet transaction in protocal layer,there always some link packets trans.what's the real purpose of link control? IF there's no link control what will be happened?
Regards!
Chris Bean.
Logged

Jan Axelson

  • Administrator
  • Frequent Contributor
  • *****
  • Posts: 3033
    • Lakeview Research
Re: what is the sense of link control in USB3.0 or PIC express
« Reply #1 on: May 09, 2011, 08:51:03 am »
In USB 3.0, link commands acknowledge received header packets, recover from errors, implement flow control, and manage power. Link-layer protocols define how the link manages buffers, frames packets, and detects received packets. The link layer handles training and synchronizing to establish connectivity between a device and its upstream link partner.

For details, see the USB 3.0 spec.

Jan
Logged
Pages: [1]
« previous next »