Representative Logical Diagram Of A Queue - Intel IXP45X Developer's Manual

AHB Queue Manager (AQM)—Intel
Processors
Figure 208. Representative Logical Diagram of a Queue
DIN
Figure 208
implementation of the AQM is as a monolithic controller of queues, but you can look at
each queue as if it stands alone. Each queue fits into the SRAM at a certain base
address, is a certain size, and maintains its own flags. The output of those flags
depends on whether the queue is a lower queue (0-31) or an upper queue (32-63). The
detailed description follows.
August 2006
Reference Number: 306262-004US
® ®
IXP45X and Intel IXP46X Product Line of Network
Queue
Size
Queue
Flag Computation F/
NF/NE/E
Flag Select
Enable[N]
shows the logical diagram of what any given queue looks like. The actual
Intel
Queue
Mapping
Queue #
® ®
IXP45X and Intel IXP46X Product Line of Network Processors
SRAM DOUT
Flag Remap
(lower queues)
Flag Strb
Flag Queue Id
Flag Queue Status
Upper Queues
Event
Developer's Manual
931
B4315-01