Figure 30-14. abr receive flow, 2 rm cell structure, Rm cell structure -25 – Freescale Semiconductor MPC8260 User Manual
Page 945: Abr receive flow -25, Figure 30-14
ATM Controller and AAL0, AAL1, and AAL5
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor
30-25
Figure 30-14. ABR Receive Flow
30.5.2
RM Cell Structure
describes the structure of the RM cell supported by the PowerQUICC II. For more information,
see the ABR flow-control traffic management specification (TM 4.0) on the ATM Forum website.
B-RM Cells Rx
CI = 1
ACR = ACR-ACR
×RDF
NI = 0
ACR = ACR+RIF
×PCR
ACR = min(ACR,PCR)
ACR = min(ACR,ER)
ACR = max(ACR,MCR)
BN = 0
Unack = 0
EXIT
The source generate this RM
Unack = Number of F-RM in absence of B-RM = 0
Source End-Sys 5
Source End-Sys 1, 6
Source End-Sys 5, 6
Yes
No
Yes
No
No
Yes