KSZ8873MLL Micrel Inc, KSZ8873MLL Datasheet - Page 56

• Manufacturer Part Number: KSZ8873MLL
• Description: IC ETHERNET SWITCH 3PORT 64-LQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8873MLL

• Data Rate: 100Mbps
• Controller Type: Ethernet Switch Controller
• Interface: MII
• Voltage - Supply: 1.8V, 2.5V, 3.3V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• No. Of Ports: 3
• Ethernet Type: IEEE 802.3u
• Supply Current: 115mA
• Supply Voltage Range: 2.5V, 3.3V
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Svhc: No SVHC (15-Dec-2010)
• Base: RoHS Compliant
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Fiber Support: No
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII
• Power Supply Type: Analog/Digital
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Temperature Classification: Commercial
• Interface Type: MII, RMII
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3459

Micrel, Inc.
Port Registers (Registers 16 – 95)
The following registers are used to enable features that are assigned on a per port basis. The register bit assignments are
the same for all ports, but the address for each port is different, as indicated.
Register 16 (0x10): Port 1 Control 0
Register 32 (0x20): Port 2 Control 0
Register 48 (0x30): Port 3 Control 0
September 2010
Bit
7
6
5
4-3
2
1
0
Broadcast
Storm
Protection
Enable
DiffServ
Priority
Classification
Enable
802.1p
Priority
Classification
Enable
Port-based
Priority
Classification
Tag Insertion
Tag
Removal
TXQ Split
Enable
Name
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
=1, Enable broadcast storm protection for ingress packets on port
=0, Disable broadcast storm protection
=1, Enable DiffServ priority classification for ingress packets (IPv4) on
port
=0, Disable DiffServ function
=1, Enable 802.1p priority classification for ingress packets on port
=0, Disable 802.1p
=00, Ingress packets on port will be
classified as priority 0 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
=01, Ingress packets on port will be
classified as priority 1 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
=10, Ingress packets on port will be
classified as priority 2 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
=11, Ingress packets on port will be
classified as priority 3 queue if “Diffserv” or “802.1p” classification is not
enabled or fails to classify.
Note: “DiffServ”, “802.1p” and port priority can be enabled at the same
time. The OR’ed result of 802.1p and DSCP overwrites the port priority.
=1, When packets are output on the port, the switch will add 802.1p/q
tags to packets without 802.1p/q tags when received. The switch will not
add tags to packets already tagged. The tag inserted is the ingress
port’s “port VID”.
=0, Disable tag insertion
=1, When packets are output on the port, the switch will remove
802.1p/q tags from packets with 802.1p/q tags when received. The
switch will not modify packets received without tags.
=0, Disable tag removal
=1, Split TXQ to 4 queue configuration. It cannot be enable at the same
time with split 2 queue at register 18, 34,50 bit 7.
=0, No split, treated as 1 queue configuration
56
KSZ8873MLL/FLL/RLL
Default
0
0
0
00
0
0
0
M9999-092309-1.2