Specifications

Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Advanced Control Registers (Continued)
Address
Name
Description
Mode
Default
Register 130 (0x82): Global Control 14
7–6
Pri_2Q[1:0]
(Note that program
Prio_2Q[1:0] = 01 is not
supported and should be
avoided)
When the 2 Queues configuration is selected, these
Pri_2Q[1:0] bits are used to map the 2-bit result of
IEEE 802.1p from register 128/129 or TOS/DiffServ
from register 144- 159 mapping (for 4 Queues) into
two queues low/high priorities.
2-bit result of IEEE 802.1p or TOS/DiffServ
00 (0) = map to Low priority queue
01 (1) = Prio_2Q[0] map to Low/High priority queue
10 (2) = Prio_2Q[1] map to Low/High priority queue
11 (3) = map to High priority queue
Pri_2Q[1:0] =
00: Result 0,1,2 are low priority. 3 is high priority.
10: Result 0,1 are low priority. 2,3 are high priority
(default).
11: Result 0 is low priority. 1,2,3 are high priority.
R/W 10
5 Reserved N/A Do not change. RO 0
4 Reserved N/A Do not change. RO 0
3–2 Reserved N/A Do not change. RO 01
1 Reserved N/A Do not change. RO 0
0 Reserved N/A Do not change. RO
0.
Register 131 (0x83): Global Control 15
7 Reserved N/A RO 1
6 Reserved N/A RO 0
5
Unknown unicast packet
forward
1 = enable supporting unknown unicast packet
forward
0 = disable
R/W 0
4–0
Unknown unicast packet
forward port map
00000 = filter unknown unicast packet
00001 = forward unknown unicast packet to port 1.
00010 = forward unknown unicast packet to port 2.
00011 = forward unknown unicast packet to port 1,
port 2
……
11111 = broadcast unknown unicast packet to all
ports
R/W 00000
March 12, 2014
77
Revision 1.7