KSZ8842-16MVL TR Micrel, KSZ8842-16MVL TR Datasheet - Page 34
KSZ8842-16MVL TR
Manufacturer Part Number
KSZ8842-16MVL TR
Description
Ethernet ICs 2-Port Ethernet Switch/Repeater + Generic (8, 16-bit) bus interface(Lead Free)
Manufacturer
Micrel
Datasheet
1.KSZ8842-16MVL_TR.pdf
(141 pages)
Specifications of KSZ8842-16MVL TR
Rohs
yes
Product
Ethernet Switches
Package / Case
PQFP-128
Mounting Style
SMD/SMT
- Current page: 34 of 141
- Download datasheet (765Kb)
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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