Motorola PowerQUICC II MPC8280 Series Reference Manual page 1269

34.5.3.5 Transmit Link State Machine Control
• Define the IMA link
— Define link parameters (e.g. IMA ID, Link ID, IMA frame size (M)) in
coordination with IMA group definition
— Assign ICP offset
— Create and initialize transmit queue
• Control link operation (via ILTCNTL[TXSC]) in coordination with link and group
states
34.5.3.6 Transmit Group State Machine Control
• Define the IMA group(s)
— Assign IMA ID
— Assign Link IDs and the transmit group order table
— Assign TRL
— Assign IMA frame size (M)
— Signal group parameters via ICP cells
— Define ATM pace controller (APC) parameters for this transmit group
• Signal transmit group state via ICP cells
• Negotiate transmit group parameters with the far end
• Check status of links in group to make 'Sufficient Links' determination
• Control group operation (via IGTCNTL[TXSC]) in coordination with group state
• Coordinate link state transitions with group state transitions during group startup
and link addition
34.5.3.7 Group Symmetry Control
All types of group symmetry (operation and configuration) are supportable. This is
facilitated by the ability to independently enable/disable links (via RXPHYEN and
TXPHYEN) and to control link and group states (via independent link and group transmit
and receive parameters).
34.5.3.8 ICP End-to-End Channel Transmission
• Can send information on end-to-end channel by updating field in Tx ICP.
• No Rx support is provided for end-to-end channel.
34.5.3.9 Link Addition and Slow Recovery (LASR) Procedure
Coordinate addition of links for both receive and transmit, including the following:
MOTOROLA
Freescale Semiconductor, Inc.
Chapter 34. Inverse Multiplexing for ATM (IMA)
For More Information On This Product,
Go to: www.freescale.com
IMA Software Interface and Requirements
34-59