KS8842-16MQL-EVAL Micrel Inc, KS8842-16MQL-EVAL Datasheet - Page 34
KS8842-16MQL-EVAL
Manufacturer Part Number
KS8842-16MQL-EVAL
Description
EVAL KIT EXPERIMENTAL KS8842
Manufacturer
Micrel Inc
Datasheet
1.KS8842-16MQL-EVAL.pdf
(141 pages)
Specifications of KS8842-16MQL-EVAL
Main Purpose
Interface, Ethernet
Utilized Ic / Part
KS8842
Lead Free Status / RoHS Status
Not applicable / Not applicable
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Not Compliant
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The KSZ8842M will not forward the following packets:
Micrel, Inc.
October 2007
1. Error packets.
2. 802.3x pause frames.
3. "Local" packets.
These include framing errors, Frame Check Sequence (FCS) errors, alignment errors, and illegal size packet
errors.
The KSZ8842M intercepts these packets and performs the flow control.
Based on destination address (DA) lookup. If the destination port from the lookup table matches the port from
which the packet originated, the packet is defined as "local."
Figure 11. Destination Address Resolution Flow Chart in Stage Two
Spanning Tree
IGMP Process
Membership
Port Mirror
Port VLAN
Process
Process
Check
PTF1
PTF2
- Check receiving port's receive enable bit
- Check destination port's transmit enable bit
- Check whether packets are special (BPDU)
or specified
- Applied to MAC #1 and MAC #2
- IGMP will be forwarded to the host port
- RX Mirror
- TX Mirror
- RX or TX Mirror
- RX and TX Mirror
34
KSZ8842-16/32 MQL/MVL/MVLI/MBL
M9999-102207-1.9
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