KSZ8842-PMBLAM MICREL [Micrel Semiconductor], KSZ8842-PMBLAM Datasheet - Page 74
![no-image](/images/no-image-200.jpg)
KSZ8842-PMBLAM
Manufacturer Part Number
KSZ8842-PMBLAM
Description
2-Port Ethernet Switch with PCI Interface
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
1.KSZ8842-PMBLAM.pdf
(119 pages)
- Current page: 74 of 119
- Download datasheet (961Kb)
Micrel, Inc.
Port 1 Control Register 1 (Offset 0x0500): P1CR1
This register contains the global per port control for the switch port 1 function.
October 2007
15 – 8
Bit
4:3
7
6
5
2
1
0
Default
0x00
0
0
0
0
0
0
0
R/W
RW
RW
RW
RW
RW
RW
RW
RO
Description
Reserved
Broadcast storm protection enable
1 = enable broadcast storm protection for ingress packets on the port
0 = disable broadcast storm protection
Diffserv priority classification enable
1 = enable diffserv priority classification for ingress packets on port
0 = disable diffserv function
802.1p priority classification enable
1 = enable 802.1p priority classification for ingress packets on port
0 = disable 802.1p
Port based priority classification
00 = ingress packets on port 1 will be classified as priority 0 queue if
“Diffserv” or “802.1p” classification is not enabled or fails to classify.
01 = ingress packets on port 1 will be classified as priority 1 queue if
“Diffserv” or “802.1p” classification is not enabled or fails to classify.
10 = ingress packets on port 1 will be classified as priority 2 queue if
“Diffserv” or “802.1p” classification is not enabled or fails to classify.
11 = ingress packets on port 1 will be classified as priority 3 queue if
“Diffserv” or “802.1p” classification is not enabled or fails to classify.
Note: “Diffserv”, “802.1p” and port priority can be enabled at the same
time. The OR’ed result of 802.1p and DSCP overwrites the port priority.
Tag insertion
1 = when packets are output on the port, the switch will add 802.1p/q tags
to packets without 802.1p/q tags when received. The switch will not add
tags to packets already tagged. The tag inserted is the ingress port’s
“port VID”.
0 = disable tag insertion
Tag removal
1 = when packets are output on the port, the switch will remove 802.1p/q
tags from packets with 802.1p/q tags when received. The switch will not
modify packets received without tags.
0 = disable tag removal
TX Multiple Queues Select Enable
1 = the port output queue is split into four priority queues.
0 = single output queue on the port. There is no priority differentiation
even though packets are classified into high or low priority.
74
KSZ8842-PMQL/PMBL
M9999-100207-1.5
Related parts for KSZ8842-PMBLAM
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![KSZ8842](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![KSZ8842-16MBL-EVAL](/images/no-image3.png)
Part Number:
Description:
2-Port Ethernet Switch with Non-PCI Interface
Manufacturer:
MICREL [Micrel Semiconductor]
Datasheet:
![KSZ8842-16](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
2-port Ethernet Switch with PCI Interface
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC5219YM5](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC50395CN](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Six Decade Counter / Display Decoder
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC2524-2BN](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC5015BN](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![LM2574BWM](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC4574BWM](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
200kHz Simple 0.5A Buck Voltage Regulator
Manufacturer:
Micrel Semiconductor
Datasheet:
![SY100EL32VZITR](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![SY100EL92ZGTR](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![SY100ELT23ZCTR](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC4685](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet:
![MIC5255-3.0BM5](/images/manufacturer_photos/0/4/435/micrel_semiconductor_tmb.jpg)
Part Number:
Description:
Manufacturer:
Micrel Semiconductor
Datasheet: