KSZ8993MI Micrel Inc, KSZ8993MI Datasheet - Page 60

• Manufacturer Part Number: KSZ8993MI
• Description: IC SWITCH 10/100 W/TXRX 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8993MI

• 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): 85C
• Operating Temperature (min): -40C
• 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: Industrial
• Data Rate: 100Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-2124; KSZ8993MI

Register 27 (0x1B): Port 1 Control 11
Register 43 (0x2B): Port 2 Control 11
Register 59 (0x3B): Port 3 Control 11 (continued
Bit
3
2
1
0
Note: Port Control 12 and 13, and Port Status 0 contents can also be accessed with the MIIM (MDC/MDIO) interface via the
Standard MIIM registers.
Register 28 (0x1C): Port 1 Control 12
Register 44 (0x2C): Port 2 Control 12
Register 60 (0x3C): Reserved, not applied to port 3
Bit
7
6
Micrel, Inc.
October 2008
High priority
receive rate
flow control
enable
Transmit
differential
priority rate
control
Low priority
transmit rate
control enable
High priority
transmit rate
control enable
Auto
negotiation
enable
Name
Name
Force speed
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
= 1, flow control may be asserted if the port’s
high priority receive rate is exceeded.
(To use this, differential receive rate control must
be on.)
= 0, flow control is not asserted if the port’s high
priority receive rate is exceeded.
= 1, will do transmit rate control on both high and
low priority packets based on the rate counters
defined by the high and low priority packets
respectively.
= 0, will do transmit rate control on any packets.
The rate counters defined in low priority will be
used.
1, enable the port’s low priority transmit rate
control feature
= 0, disable the port’s low priority transmit rate
control feature
= 1, enable the port’s high priority transmit rate
control feature
= 0, disable the port’s high priority transmit rate
control feature
Description
= 0, disable auto negotiation, speed and duplex
are decided by bit 6 and 5 of the same register.
= 1, auto negotiation is on
= 1, forced 100BT if AN is disabled (bit 7)
= 0, forced 10BT if AN is disabled (bit 7)
60
Default
0
0
0
0
Default
For port 1,
P1ANEN pin
value during
reset.
For port 2,
P2ANEN pin
value during
reset
For port 1,
P1SPD pin
value during
reset.
For port 2,
P2SPD pin
value during
reset.
M9999-020606
KSZ8993M/ML