KS8993F Micrel Inc, KS8993F Datasheet - Page 67

• 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

Micrel, Inc.
4
3
2
1
0
June 2009
SW reset
Remote
Command
Enable
Enhanced
ML_EN
P1 TX_DIS
PHY reset
R/W
R/W
R/W
R/W
R/W
1 = enable “Remote Command” access at Center side and Terminal
1 = defined as follows:
1 = reset MC sub-layer, MACs of both PHY ports and switch fabric to
0 = normal operation
0 = disable “Remote Command” access at Center side and Terminal
0 = normal operation
1 = disable (tri-state) transmit to Fiber PHY (port 1)
0 = normal operation
1 = reset the PHY of both PHY ports to their default states. This bit is
0 = normal operation
Note:
their default states. This bit is self-cleared after an ‘1’ is written to
it.
side
side
self-cleared after an ‘1’ is written to it.
In Terminal side MC mode, if a link down is detected on the fiber
or the Center side UTP, the Terminal side will disable the TX on its
UTP and turn off the LEDs to its UTP.
In Center side MC mode, this bit has no meaning.
MC (m
aintenance) sub-layer registers are not reset by this bit.
67
[e-mail]
or [phone]
M9999-062509
0
0
ML_EN pin
value during
reset
0
1
(Powered
on value in
Center side
MC mode.
After reg.
0x40h is
program-
med, this bit
will be
cleared.)
----------------
0
(Default
value for
non Center
side MC
mode)
KS8993F/FL