KSZ8995M A4 Micrel Inc, KSZ8995M A4 Datasheet - Page 45

KSZ8995M A4

Manufacturer Part Number
KSZ8995M A4
Description
Manufacturer
Micrel Inc
Datasheet

Specifications of KSZ8995M A4

Number Of Primary Switch Ports
5
Internal Memory Buffer Size
64
Operating Supply Voltage (typ)
1.8/2.5/3.3V
Fiber Support
Yes
Integrated Led Drivers
Yes
Phy/transceiver Interface
MII/SNI
Power Supply Type
Analog/Digital
Package Type
PQFP
Data Rate (typ)
10/100Mbps
Vlan Support
Yes
Operating Temperature (max)
70C
Operating Temperature (min)
0C
Pin Count
128
Mounting
Surface Mount
Jtag Support
No
Operating Supply Voltage (max)
1.9/2.6/3.6V
Operating Supply Voltage (min)
1.7/2.4/3V
Operating Temperature Classification
Commercial
Data Rate
100Mbps
Lead Free Status / RoHS Status
Compliant
Note:
Bits 2-0 are used for spanning tree support. See “Spanning Tree Support” section.
June 2009
KS8995M
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
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.
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.
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
M9999-062309
Micrel, Inc.

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