Table of Contents

PAUSE Frame
- MAC_CONTROL.request Primitive
- Frame Format
  - Reference

PAUSE Frame

Introduce the PAUSE frame in Ethernet.

The PAUSE operation is used to inhibit transmission of data frames from another station on the network for a specified period of time.

MAC_CONTROL.request Primitive

The 48-bit multicast address 01-80-C2-00-00-01 or unicast MAC address of another station.
The PAUSE opcode 16'h00-01.
A request_operand indicating the length of time for which it wishes to inhibit data frame transmission.

The PAUSE operation cannot be used to inhibit transmission of MAC Control frames.
Only supported in full duplex mode .
When MAC Control PFC operation has been enabled, MAC Control PAUSE operation shall be disabled.

Frame Format

Refer to MAC control frames format.

Reference

802.3-2022 Annex 31B - MAC Control PAUSE operation