KSZ8995XA Micrel Inc, KSZ8995XA Datasheet - Page 34

• Manufacturer Part Number: KSZ8995XA
• Description: IC SWITCH 10/100 5PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8995XA

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• 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 Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1642 - BOARD EVALUATION FOR KSZ8995XA
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1042

KS8995XA
M9999-051305
Address
1
0
Register 17 (0x11): Port 1 Control 1
Register 33 (0x21): Port 2 Control 1
Register 49 (0x31): Port 3 Control 1
Register 65 (0x41): Port 4 Control 1
Register 81 (0x51): Port 5 Control 1
Address
7
6
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
Name
Tag removal
Priority enable
Name
Sniffer port
Receive sniff
Transmit sniff
Port VLAN membership
Name
Reserved
Reserved
Discard non-PVID
packets
Force flow control
Description
Reserved
Reserved
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.
Description
1 = when packets are output on the port, the switch
will remove 802.1q tags from packets with 802.1q tags
when received. The switch will not modify packets
received without tags.
0 = disable tag removal.
1 = the port output queue is split into high and low
priority queues.
0 = single output queue on the port. There is no priority
differentiation even though packets are classified into
high or low priority.
Description
1 = port is designated as sniffer port and will transmit
packets that are monitored.
0 = port is a normal port.
1 = all the packets received on the port will be marked
as “monitored packets” and forwarded to the designated
“sniffer port.”
0 = no receive monitoring.
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.
34
Mode
R/W
R/W
Mode
R/W
R/W
R/W
R/W
Mode
R/W
R/W
R/W
Default
0
0
Default
0
0
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.
Micrel, Inc.
May 2005