KS8995MAL Micrel Inc, KS8995MAL Datasheet - Page 45

• Manufacturer Part Number: KS8995MAL
• Description: IC SWITCH 10/100 5PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8995MAL

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• For Use With: 576-1017 - BOARD EVAL EXPERIMENT KS8995M
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Note:
Bits 2-0 are used for spanning tree support. See “Spanning Tree Support” section.
May 2005
KS8995MA
Address
5
4-0
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
5
4
3
2
1
0
Name
Transmit Sniff
Port VLAN Membership
Name
Reserved
Ingress VLAN Filtering.
Discard Non-PVID Packets. 1, the switch will discard packets whose VID does not
Force Flow Control
Back Pressure Enable
Transmit Enable
Receive Enable
Learning Disable
Description
1, All the packets transmitted on the port will be marked
as “monitored packets” and forwarded to the designated
“sniffer port.”
0, no transmit monitoring.
Define the port’s “Port VLAN membership.” 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 ‘1’ includes
a port in the membership, a ‘0’ excludes a port from
membership.
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.
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.
1, enable port’s half-duplex back pressure.
0, disable port’s half-duplex back pressure.
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.
45
Mode
R/W
R/W
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0x1f
Default
0x0
0
0
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
M9999-051305
Micrel, Inc.