Datasheet
KSZ8795CLX
DS00002112B-page 68 2016-2017 Microchip Technology Inc.
5 - 4 Tag_0x6 IEEE 802.1p mapping. The value in this field is
used as the frame’s priority when its IEEE 802.1p
tag has a value of 0x6.
R/W 0x3
3 - 2 Tag_0x5 IEEE 802.1p mapping. The value in this field is
used as the frame’s priority when its IEEE 802.1p
tag has a value of 0x5.
R/W 0x2
1 - 0 Tag_0x4 IEEE 802.1p mapping. The value in this field is
used as the frame’s priority when its IEEE 802.1p
tag has a value of 0x4.
R/W 0x2
TABLE 4-10: ADVANCED CONTROL REGISTERS 130 - 135
Address Name Description Mode Default
Register 130 (0x82): Global Control 14
7 - 6 Pri_2Q[1:0] 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.
01 = Not supported and should be avoided
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 - 0 Reserved N/A Don’t Change. RO 001000
Register 131 (0x83): Global Control 15
7 - 6 Reserved N/A Don’t Change. RO 10
5 Unknown
Unicast
Packet
Forward
1 = Enable supporting unknown unicast packet for-
ward
0 = Disable
R/W 0
4 - 0 Unknown
Unicast
Packet
Forward Port
Pap
00000 = Filter unknown unicast packet
00001 = Forward unknown unicast packet to Port 1
00011 = Forward unknown unicast packet to Port 1,
Port 2
00111 = Forward unknown unicast packet to Port 1,
Port 2, and Port 3
01111 = Forward unknown unicast packet to Port 1,
Port 2, Port 3, and Port 4
11111 = Broadcast unknown unicast packet to all
ports
R/W 00000
Register 132 (0x84): Global Control 16
7 - 6 Reserved N/A Don’t Change. RO 01
TABLE 4-9: ADVANCED CONTROL REGISTERS 128 - 129 (CONTINUED)
Address Name Description Mode Default