KSZ8993 Micrel Inc, KSZ8993 Datasheet - Page 10

• 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
I/O Descriptions
KS8993
Group
PHY
IND
SNI
MII
LED[1:3][0]
LED[1:3][1]
LED[1:3][2]
I/O Names
MRXD[0:3]
MTXD[0:3]
FXSD[1:3]
VREF[1:3]
RXM[1:3]
MRXCLK
MRXCLK
RXP[1:3]
TXM[1:3]
MTXCLK
MTXD[0]
MTXCLK
MRXD[0]
TXP[1:3]
MCOLIN
MRXDV
MRXDV
MTXEN
MTXER
MTXEN
MCRS
MCOL
MCOL
ISET
Active Status
Analog
Analog
Analog
Analog
Clock
Clock
Clock
Clock
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
Description
Differential inputs (receive) for connection to media (transformer or fiber module).
Differential outputs (transmit) for connection to media (transformer or fiber module).
Fiber signal detect - connect to fiber signal detect output on fiber module. Tie low
for 100TX mode.
Center tap transformer reference for transmit data.
Transmit Current Set. Connecting an external reference resistor to set transmitter
output current. This pin connects a 1% 3k resistor if a transformer of turns ratio of
1:1 is used.
See
Four bit wide data bus for receiving MAC frames.
Receive data valid.
Receive carrier sense.
Receive collision detection.
Collision in (for forward operation only).
Receive clock.
Four bit wide data bus for transmitting MAC frames.
Transmit enable.
Transmit error.
Transmit clock.
Serial transmit data.
Transmit enable.
Transmit clock.
Serial receive data.
Receive carrier sense/data valid.
Collision detection.
Receive clock.
Output (after reset).
Mode 0: Speed (low = 100/high = 10).
Mode 1: Reserved.
Mode 2: Collision (toggle = collision during receiving , high = no collision).
Mode 3: Speed (low = 100/high = 10).
Output (after reset).
Mode 0: Duplex (low = full/high = half).
Mode 1: Duplex (low = full/high = half).
Mode 2: Duplex (low = full/high = half).
Mode 3: Reserved.
Output (after reset).
Mode 0: Collision (toggle = collision during receiving , high = no collision).
Mode 1: Transmit Activity (toggle during transmission, high = idle).
Mode 2: 10/link/act (constant low = link, toggle = act, constant high = no link).
Mode 3: Full-Duplex + Collision (constant low = full-duplex, toggle = collision in half.
duplex, constant high = half-duplex with no collision).
“Table 2, MII Interconnect”
10
for forward and reverse signal usage.
May 2005
Micrel