參數(shù)資料
型號(hào)： KSZ8873MLLJ
廠商： Micrel Inc
文件頁(yè)數(shù)： 61/108頁(yè)
文件大?。?/td> 0K
描述： IC ETHERNET SWITCH 3PORT 64LQFP
特色產(chǎn)品： KSZ8873MLLJ Ethernet Switches
標(biāo)準(zhǔn)包裝： 160
系列： *
其它名稱： 576-3996
Micrel, Inc.
KSZ8873MLLJ
September 2011
56
M9999-091911-1.8
Register 17 (0x11): Port 1 Control 1
Register 33 (0x21): Port 2 Control 1
Register 49 (0x31): Port 3 Control 1
Bit
Name
R/W
Description
Default
7
Sniffer Port
R/W
=1, Port is designated as sniffer port and will transmit packets that are
monitored.
=0, Port is a normal port
0
6
Receive
Sniff
R/W
=1, All packets received on the port will be marked as “monitored
packets” and forwarded to the designated “sniffer port”
=0, No receive monitoring
0
5
Transmit
Sniff
R/W
=1, All packets transmitted on the port will be marked as “monitored
packets” and forwarded to the designated “sniffer port”
=0, No transmit monitoring
0
4
Double Tag
R/W
=1, All packets will be tagged with port default tag of ingress port
regardless of the original packets are tagged or not
=0, Do not double tagged on all packets
0
3
User Priority
Ceiling
R/W
=1, If the packet’s “user priority field” is greater than the “user priority
field” in the port default tag register, replace the packet’s “user priority
field” with the “user priority field” in the port default tag register.
=0, Do not compare and replace the packet’s ‘user priority field”
0
2-0
Port VLAN
membership
R/W
Define the port’s egress port VLAN membership. The port can only
communicate within the membership. Bit 2 stands for port 3, bit 1 stands
for port 2, bit 0 stands for port 1.
An ‘1’ includes a port in the membership.
An ‘0’ excludes a port from membership.
111
Register 18 (0x12): Port 1 Control 2
Register 34 (0x22): Port 2 Control 2
Register 50 (0x32): Port 3 Control 2
Bit
Name
R/W
Description
Default
7
Enable 2
Queue Split
of Tx Queue
R/W
=1, Enable
It cannot be enable at the same time with split 4 queue at register 16,32
and 48 bit 0.
=0, Disable
0
6
Ingress
VLAN
Filtering
R/W
=1,Tthe switch will discard packets whose VID port membership in
VLAN table bits [18:16] does not include the ingress port.
=0, No ingress VLAN filtering.
0
5
Discard non
PVID
Packets
R/W
=1, The switch will discard packets whose VID does not match ingress
port default VID.
=0, No packets will be discarded
0
4
Force Flow
Control
R/W
=1, Will always enable full duplex flow control on the port, regardless of
AN result.
=0, Full duplex flow control is enabled based on AN result.
Pin value during reset:
For port 1, P1FFC pin
For port 2, SMRXD30
pin
For port 3, this bit has
no meaning. Flow
control is set by Reg. 6
bit 5.
3
Back
Pressure
R/W
=1, Enable port’s half duplex back pressure
0
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