Freescale Semiconductor MPC8260 - Manual (Page 1177)

Inverse Multiplexing for ATM (IMA)
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 33-75
33.5.4.13.2 Receive
No special facility is included for reception of the end-to-end channel. The end-to-end channel field is part
of the received ICP cells, so its information can be read by software from those cells. However, ICP cells
are only received when the SCCI field changes, so changes in the end-to-end channel will not be received
until the SCCI field also changes (when there is a change in the status and/or control of the far end).