KSZ8863RLL-EVAL Micrel Inc, KSZ8863RLL-EVAL Datasheet - Page 50

• Manufacturer Part Number: KSZ8863RLL-EVAL
• Description: BOARD EVALUATION FOR KSZ8863RLL
• Manufacturer: Micrel Inc

Specifications of KSZ8863RLL-EVAL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3868

Micrel, Inc.
Register 3 (0x03): Global Control 1
Register 4 (0x04): Global Control 2
September 2009
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
Frames
Port 3 Tail Tag
Mode Enable
IEEE 802.3x
Transmit
Direction Flow
Control Enable
IEEE 802.3x
Receive
Direction Flow
Control Enable
Frame Length
Field Check
Aging Enable
Fast Age
Enable
Aggressive
Back-off
Enable
Unicast
Port-VLAN
Mismatch
Discard
Multicast
Storm
Protection
Disable
Mode
Flow Control
and Back
Pressure Fair
Mode
No Excessive
Collision Drop
Name
Pass All
Name
Back Pressure
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
= 1, switch all packets including bad ones. Used solely for
debugging purposes. Works in conjunction with sniffer mode only.
=1, Enable port 3 tail tag mode.
=0, Disable.
= 1, will enable transmit direction flow control feature.
= 0, will not enable transmit direction flow control feature. Switch
will not generate any flow control (PAUSE) frame.
= 1, will enable receive direction flow control feature.
= 0, will not enable receive direction flow control feature. Switch will
not react to any flow control (PAUSE) frame it receives.
=1, will check frame length field in the IEEE packets. If the actual
length does not match, the packet will be dropped (for Length/Type
field < 1500).
=0, not check
1 = enable age function in the chip
0 = disable age function in the chip
1 = turn on fast age (800us)
1 = enable more aggressive back off algorithm in half duplex mode
to enhance performance. This is not an IEEE standard.
Description
This feature is used with port-VLAN (described in reg. 17, reg. 33,
…)
= 1, all packets can not cross VLAN boundary
= 0, unicast packets (excluding unkown/multicast/ broadcast) can
cross VLAN boundary
Note: Port mirroring is not supported if this bit is set to “0”.
= 1, “Broadcast Storm Protection” does not include multicast
packets. Only DA = FF-FF-FF-FF-FF-FF packets will be regulated.
= 0, “Broadcast Storm Protection” includes
FF-FF-FF and DA[40] = 1 packets.
= 1, carrier sense based backpressure is selected
= 0, collision based backpressure is selected
= 1, fair mode is selected. In this mode, if a flow control port and a
non-flow control port talk to the same destination port, packets from
the non-flow control port may be dropped. This is to prevent the flow
control port from being flow controlled for an extended period of
time.
= 0, in this mode, if a flow control port and a non-flow control port
talk to the same destination port, the flow control port will be flow
controlled. This may not be “fair” to the flow control port.
= 1, the switch will not drop packets when 16 or more collisions
occur.
= 0, the switch will drop packets when 16 or more collisions occur.
50
DA = FF-FF-FF-
KSZ8863MLL/FLL/RLL
Default
Default
1
1
1
1
0
0
0
1
1
1
0
0
0
M9999-091009-1.1