KSZ8893FQL-FX Micrel Inc, KSZ8893FQL-FX Datasheet - Page 25

• Manufacturer Part Number: KSZ8893FQL-FX
• Description: 2+1 Port 10/100 Switch W/Tranceivers & Frame Buffers, ( )
• Manufacturer: Micrel Inc

Specifications of KSZ8893FQL-FX

• Controller Type: Ethernet Switch Controller
• Interface: MII, RMII, SNI
• Voltage - Supply: 3.1 V ~ 3.5 V
• Operating Temperature: -40°C ~ 85°C
• 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): 3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Data Rate: 1000Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1603 - EVAL KIT EXPERIMENTAL KSZ8893MQL
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3273

Micrel, Inc.
MC Loop Back Operation
TS-1000 MC loop back operation is initiated and enabled by the center MC. The terminal MC provides the loop back
path to return the loop back packet back to the center MC. The KSZ8893FQL in terminal MC mode provides three loop
back path options:
October 2007
Port 1 OPT
Port 2 MAC
Port 2 UTP
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Receive loop back packet from center MC at RXP1/RXM1 input pins of port 1 (fiber).
Turn around loop back packet at PMD/PMA of port 1 (fiber).
Transmit loop back packet back to center MC from TXP1/TXM1 output pins of port 1 (fiber).
Receive loop back packet from center MC at RXP1/RXM1 input pins of port 1 (fiber).
Turn around loop back packet at MAC of port 2 (copper).
Transmit loop back packet back to center MC from TXP1/TXM1 output pins of port 1 (fiber).
Receive loop back packet from center MC at RXP1/RXM1 input pins of port 1 (fiber).
Turn around loop back packet at PMD/PMA of port 2 (copper).
Transmit loop back packet back to center MC from TXP1/TXM1 output pins of port 1 (fiber).
Figure 3. KSZ8893FQL MC Loop Back Paths
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KSZ8893FQL