KSZ8895MQ_12 MICREL [Micrel Semiconductor], KSZ8895MQ_12 Datasheet - Page 81
![no-image](/images/no-image-200.jpg)
KSZ8895MQ_12
Manufacturer Part Number
KSZ8895MQ_12
Description
Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
1.KSZ8895MQ_12.pdf
(116 pages)
- Current page: 81 of 116
- Download datasheet (2Mb)
Micrel, Inc.
Advanced Control Registers (Continued)
March 2012
Address
1
0
Register 177 (0xB1): Port 1 Control 9
Register 193 (0xC1): Port 2 Control 9
Register 209 (0xD1): Port 3 Control 9
Register 225 (0xE1): Port 4 Control 9
Register 241 (0xF1): Port 5 Control 9
7 – 2
1
0
Name
Insert Source Port PVID for
Untagged Packet Destination
to Second Lowest Egress Port
Note: Enabled by the register
135 bit 2
Insert Source Port PVID for
Untagged Packet Destination
to Lowest Egress Port
Note: Enabled by the register
135 bit 2
Reserved
4 Queue Split Enable
Enable Dropping Tag
Description
Register 176: insert source Port 1 PVID for
untagged frame at egress Port 3
Register 192: insert source Port 2 PVID for
untagged frame at egress Port 3
Register 208: insert source Port 3 PVID for
untagged frame at egress Port 2
Register 224: insert source Port 4 PVID for
untagged frame at egress Port 2
Register 240: insert source Port 5 PVID for
untagged frame at egress Port 2
Register 176: insert source Port 1 PVID for
untagged frame at egress Port 2
Register 192: insert source Port 2 PVID for
untagged frame at egress Port 1
Register 208: insert source Port 3 PVID for
untagged frame at egress Port 1
Register 224: insert source Port 4 PVID for
untagged frame at egress Port 1
Register 240: insert source Port 5 PVID for
untagged frame at egress Port 1
This bit in combination with Register16/32/48/64/80
bit 0 will select the split of ½/4 queues:
{Register177 bit 1, Register16 bit 0} =
11, reserved.
10, the port output queue is split into four priority
queues or if map 802.1p to priority 0-3 mode.
01, the port output queue is split into two priority
queues or if map 802.1p to priority 0-3 mode.
00, single output queue on the port. There is no
priority differentiation even though packets are
classified into high and low priority.
0 = disable tag drop
1 = enable tag drop
81
Mode
KSZ8895MQ/RQ/FMQ
R/W
R/W
R/W
R/W
RO
M9999-032612-1.5
0000000
Default
0
0
0
0
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