KSZ8993 Micrel Inc, KSZ8993 Datasheet - Page 14

• Manufacturer Part Number: KSZ8993
• Description: IC SWITCH 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8993

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 64
• Operating Supply Voltage (typ): 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): 2.75/3.6V
• Operating Supply Voltage (min): 2.35V
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1032

KS8993
KS8993
Group
CTRL
TEST
PWR
GND_RCV[1:3]
VDD_RCV[1:3]
VDD_RX[1:3]
GND_RX[1:3]
VDD_TX[1:3]
GND_TX[1:3]
PRSEL[1:0]
I/O Names
GND_ANA
TEST[1:2]
GND_PLL
VDD_PLL
GND_BG
SCANEN
MUX[1:2]
VDD_BG
TESTEN
VDD_IO
AOUT
RST#
GND
VDD
X1
X2
Active Status
Clock
Clock
H
H
H
H
H
H
L
Description
Selects queue servicing if using split transmit queues. Use the table below to select
desired servicing. Note that this selection effects all split transmit queue ports in the
same way.
PRSEL
1
L
L
H
H
External crystal or clock input
Used when other polarity of crystal is needed. This is unused for a normal clock input.
System reset
Factory test input - pull low
Factory test input - pull low
Factory test output - leave open
Mux[1]
Float
1
0
Float
Special note: all other combinations are not allowed
Test[1]
Float
Float
Special note: all other combinations are not allowed
2.5V for receiver
Ground for receiver
2.5V for transmit circuitry
Ground for transmit circuitry
2.5V for clock recovery circuitry
Ground for clock recovery
2.5V for phase locked loop circuitry
Ground for phase locked loop circuitry
Analog ground
Analog ground
2.5V for analog circuits
2.5V for core digital circuitry
2.5V or 3.3V for MII interface, LEDs and other digital I/O
Ground for digital circuitry
0
L
H
L
H
Mux[2]
Float
Float
Float
1
Test[2]
Float
0
Priority Selection
Transmit all high priority before low priority (default)
Transmit high priority at 10:1 ratio
Transmit high priority at 5:1 ratio
Transmit high priority at 2:1 ratio
14
Default for factory test purpose
TX Disable Port 1
TX Disable Port 2
Power Down Port 3
Default for factory test purpose
Far End Fault Disable
.
May 2005
Micrel