KS8993F Micrel Inc, KS8993F Datasheet - Page 23

• Manufacturer Part Number: KS8993F
• Description: IC CONV MED 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8993F

• 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 Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: KS8993F-EVAL - EVAL KIT EXPERIMENTAL KS8993F
• Lead Free Status / RoHS Status: Not Compliant, Lead free / RoHS Compliant

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. In terminal MC mode, the KS8993F provides the following loop
back path:
2.2.4 Registers for Media Converter Functions
The KS8993F provides 32 dedicated registers (0x40 to 0x5F) for MC communication between center MC and terminal
MC. Some MC register functions include:
2.2.5 Unique I/O Feature Definition
Micrel, Inc.
June 2009
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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 MAC of port 2 (copper).
Transmit loop back packet back to center MC from TXP1/TXM1 output pins of port 1 (fiber).
PHY address & configuration
Loop back counters for CRC error, timeout, good packet
Remote commands
Counters for valid MC packet transmitted and received
MC - status, vendor code, and model number
Link Partner - status, vendor code, and model number
UTP
Fiber
Port
Port
RX+
/RX-
OAM MC
PMD/PMA
PMD/PMA
23
Switch
PCS
MAC
MAC
PCS
TX+
/TX-
[e-mail]
or [phone]
M9999-062509
KS8993F/FL