KS8993F A5 Micrel Inc, KS8993F A5 Datasheet - Page 57

• Manufacturer Part Number: KS8993F A5
• Manufacturer: Micrel Inc

Specifications of KS8993F A5

• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• 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): 1.89/3.465V
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

KS8993F
Register 14 (0x0E): User Defined Register 2
Register 15 (0x0F): User Defined Register 3
4.2
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
August 26, 2004
Bit
7-0
Bit
7-0
Bit
7
6
5
4
3
2
Port Registers
Register 32 (0x20): Port 2 Control 0
Register 48 (0x30): Port 3 Control 0
Name
Broadcast
storm
protection
enable
Diffserv
priority
classification
enable
802.1p
priority
classification
enable
Port based
priority
classification
enable
User Priority
Ceiling
Tag insertion
Name
UDR2
Name
UDR3
R/W
R/W
R/W
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 the
= 0, disable broadcast storm protection
= 1, enable diffserv priority classification for ingress packets on
= 0, disable diffserv function
= 1, enable 802.1p priority classification for ingress packets on
= 0, disable 802.1p
= 1, ingress packets on the port will be classified as high priority
if
= 0, ingress packets on port will be classified as low priority if
Note: “Diffserv”, “802.1p” and port priority can be enabled at the same
= 1, if the packet’s “user priority field” is greater than the “user
= 0, do no compare and replace the packet’s ‘user priority field”
= 1, when packets are output on the port, the switch will add
= 0, disable tag insertion
Description
Description
port
port
port
“Diffserv” or “802.1p” classification is not enabled or fails to
classify.
“Diffserv” or “802.1p” classification is not enabled or fails to
classify.
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.
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”.
time. The OR’ed result of 802.1p and DSCP overwrites the port
priority.
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Default
0
0
Pin value
during reset:
P1_1PEN (port 1),
P2_1PEN (port 2),
P3_1PEN (port 3)
Pin value
during reset:
P1_PP (port 1),
P2_PP (port 2),
P3_PP (port 3)
0
Pin value
during reset:
P1_TAGINS (port 1),
P2_TAGINS (port 2),
P3_TAGINS (port 3)
Default
0x00
Default
0x00
Revision 1.0
Micrel