KSZ8895 INFINEON [Infineon Technologies AG], KSZ8895 Datasheet - Page 67

• Manufacturer Part Number: KSZ8895
• Description: Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface
• Manufacturer: INFINEON [Infineon Technologies AG]

Micrel, Inc.
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
Note:
Bits 2-0 are used for spanning tree support. See “Spanning Tree Support” section.
January 2011
Address
7
6
5
4
3
2
1
0
Name
User Priority Ceiling
Ingress VLAN Filtering.
Discard Non-PVID
packets
Force Flow Control
Back Pressure Enable
Transmit Enable
Receive Enable
Learning Disable
Description
1, If packet ‘s “user priority field” is greater than the
“user priority field” in the port default tag register,
replace the packet’s “user priority field” with the “user
priority field” in the port default tag register control 3.
0, no replace packet’s priority filed with port default tag
priority filed of the port register control 3 bit [7:5].
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
(Default)
1, enable port half-duplex back pressure.
0, disable port 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.
1, the switch will discard packates whose VID port
67
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
KSZ8895MQ/RQ/FMQ
Strap-in option
LED1_1/PCOL
For port 3/port 4
LED1_1 default
Pull up (1): Not
force flow control;
PCOL default
Pull-down (0): Not
force flow control.
LED1_1 Pull
down (0): Force
flow control;
PCOL Pull-up (1):
Force flow
control.
Note: LED1_1
has internal pull-
up; PCOL have
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.
M9999-012011-1.2
Default
0
0
0
0
1
1
0