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KS8995MI Datasheet

  • KS8995MI

  • Micrel Semiconductor [Integrated 5-Port 10/100 Managed Swit...

  • 268.27KB

  • MICREL   MICREL

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KS8995M
Address
5
Name
Transmit sniff
Description
1, All the packets transmitted on the port will be
marked as 鈥渕onitored packets鈥?and forwarded to the
designated 鈥渟niffer port.鈥?/div>
0, no transmit monitoring.
Define the port鈥檚 鈥淧ort VLAN membership.鈥?Bit 4 stands
for port 5, bit 3 for port 4... bit 0 for port 1. The Port can
only communicate within the membership. A 鈥?鈥?/div>
includes a port in the membership, a 鈥?鈥?excludes a port
from membership.
Mode
R/W
Default
0
Micrel
4-0
Port VLAN membership
R/W
0x1f
Register 18 (0x12): Port 1 Control 2
Register 34 (0x22): Port 2 Control 2
Register 50 (0x32): Port 3 Control 2
Register 66 (0x42): Port 4 Control 2
Register 82 (0x52): Port 5 Control 2
Address
7
6
Name
Reserved
Ingress VLAN filtering
Description
Reserved
1, the switch will discard packets whose VID port
membership in VLAN table bit[20:16] does not include
the ingress port.
0, no ingress VLAN filtering.
1, the switch will discard packets whose VID does
not match ingress port default VID.
0, no packets will be discarded.
1, will always enable rx and tx flow control on the port,
regardless of AN result.
0, the flow control is enabled based on AN result.
Note: Setting a port for both half-duplex and forced
flow control is an illegal configuration. For half-duplex
enable back pressure.
R/W
Mode
Default
0x0
0
5
Discard Non PVID packets
R/W
0
4
Force flow control
R/W
0
For port 4 only,
there is a special
configuration pin
to set the default,
Pin PCOL strap
option. Pull-down
(0): No Force flow
control Pull-up
(1): Force flow
control.
Note: PCOL has
internal pull down.
Pin PMRXD2 strap
option. Pull-down
(0): disable back
pressure. Pull-up
(1): enable back
pressure.
Note: PMRXD2 has
internal pull-down.
1
1
0
3
Back pressure enable
1, enable port鈥檚 half-duplex back pressure.
0, disable port鈥檚 half-duplex back pressure.
R/W
2
1
0
Note:
Transmit enable
Receive enable
Learning disable
1, enable packet transmission on the port.
0, disable packet transmission on the port.
1, enable packet reception on the port.
0, disable packet reception on the port.
1, disable switch address learning capability.
0, enable switch address learning.
R/W
R/W
R/W
Bits 2-0 are used for spanning tree support. See
鈥淪panning Tree Support鈥?/div>
section.
December 2003
45
M9999-120403

KS8995MI 产品属性

  • 66

  • 集成电路 (IC)

  • 专用 IC

  • *

  • *

  • *

  • 表面贴装

  • 128-BFQFP

  • 128-PQFP（14x20）

  • 散装

  • 576-1020

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