KSZ8895MQ-EVAL Datasheet, PDF (88/118 Pages) Micrel Semiconductor – Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII Interface

Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Advanced Control Registers (Continued)
Address Name
Description
Mode
Default
Register 190 (0xBE) : Port 1 Queue 3 Egress Limit Control 4
Register 206 (0xCE) : Port 2 Queue 3 Egress Limit Control 4
Register 222 (0xDE) : Port 3 Queue 3 Egress Limit Control 4
Register 238 (0xEE): Port 4 Queue 3 Egress Limit Control 4
Register 254 (0xFE): Port 5 Queue 3 Egress Limit Control 4
7
Reserved
RO
0
Egress data rate limit for priority 3 frames
Egress traffic from this priority queue is shaped
6−0
Port Queue 3 Egress Limit
according to the Data Rate Selected Table. See the ^R/W
0000000
table follow the end of Egress limit control registers.
In four queues mode, it is highest priority.
Notes:
1. In the port priority 0−3 ingress rate limit mode, will need to set all related ingress/egress ports to two queues or four queues mode.
2. In the port queue 0−3 egress rate limit mode, the highest priority get exact rate limit based on the rate select table, other priorities packets
rate are based upon the ratio of the port register control 10/11/12/13 when use more than one egress queue per port.
January 22, 2013
88
Revision 1.6