KS8993M Micrel Inc, KS8993M Datasheet - Page 58

• Manufacturer Part Number: KS8993M
• Description: IC SWITCH 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8993M

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• 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 Supply Voltage (min): 1.71/3.135V
• Power Dissipation: 800mW
• Supply Current: 0.1/0.19A
• Operating Temperature Classification: Commercial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1013 - BOARD EVAL EXPERIMENT KS8993M
• Lead Free Status / RoHS Status: Not Compliant, Lead free / RoHS Compliant

Register 25 (0x19): Port 1 Control 9
Register 41 (0x29): Port 2 Control 9
Register 57 (0x39): Port 3 Control 9
Bit
7-0
Register 26 (0x1A): Port 1 Control 10
Register 42 (0x2A): Port 2 Control 10
Register 58 (0x3A): Port 3 Control 10
Bit
7-4
3-0
Register 27 (0x1B): Port 1 Control 11
Register 43 (0x2B): Port 2 Control 11
Register 59 (0x3B): Port 3 Control 11
Bit
7
6
5
4
Micrel, Inc.
April 2005
Name
Receive low
priority rate
control [7:0]
Name
Receive low
priority rate
control [11:8]
Receive high
priority rate
control [11:8]
Name
Receive
differential
priority rate
control
Low priority
receive rate
control enable
High priority
receive rate
control enable
Low priority
receive rate
flow control
enable
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
This register along with port control 10, bits [7:4]
form a 12-bits field to determine how many
“32Kbps” low priority blocks can be received (in a
unit of 4Kbytes in a one second period).
Description
These bits along with port control 9, bits [7:0]
form a 12-bits field to determine how many
“32Kbps” low priority blocks can be received (in a
unit of 4Kbytes in a one second period).
These bits along with port control 8, bits [7:0]
form a 12-bits field to determine how many
“32Kbps” high priority blocks can be received (in
a unit of 4Kbytes in a one second period).
Description
= 1, If bit 6 is also ‘1’ this will enable receive rate
control for this port on low priority packets at the
low priority rate. If bit 5 is also ‘1’, this will enable
receive rate control on high priority packets at the
high priority rate.
= 0, receive rate control will be based on the low
priority rate for all packets on this port.
= 1, enable port’s low priority receive rate control
feature
= 0, disable port’s low priority receive rate control
= 1, If bit 7 is also ‘1’ this will enable the port’s
high priority receive rate control feature. If bit 7 is
a ‘0’ and bit 6 is a ‘1’, all receive packets on this
port will be rate controlled at the low priority rate.
= 0, disable port’s high priority receive rate
control feature
= 1, flow control may be asserted if the port’s low
priority receive rate is exceeded.
= 0, flow control is not asserted if the port’s low
priority receive rate is exceeded.
58
Default
0x00
Default
0x0
0x0
Default
0
0
0
0
KS8993M/ML/MI
M9999-041205