KS8999I Micrel Inc, KS8999I Datasheet - Page 24
KS8999I
Manufacturer Part Number
KS8999I
Description
IC SWITCH 9-PORT 10/100 208-PQFP
Manufacturer
Micrel Inc
Specifications of KS8999I
Applications
*
Mounting Type
Surface Mount
Package / Case
208-MQFP, 208-PQFP
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)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Jtag Support
No
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With
576-1023 - BOARD EVAL EXPERIMENT FOR KS8999
Lead Free Status / RoHS Status
Not Compliant, Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
January 2005
Micrel, Inc.
Note that the signal MRXER is not provided on the MII interface for the KS8999 for PHY mode operation and MTXER
is not represented for MAC mode. Normally this would indicate a receive / transmit error coming from the physical
layer /MAC device, but is not appropriate for this configuration. If the connecting device has a MRXER pin, this
should be tied low on the other device for reverse or if it has a MTXER pin in the forward mode it should also be tied
low on the other device.
The following explains the KS8999 in PHY mode and MAC mode of operation:
KS8999 PHY Mode
KS8999 MAC Mode
Figure 3. Data Sent from External MAC Controller to KS8999 PHY Mode
Figure 6. Data Sent from KS8999 PHY Mode to External PHY Device
Figure 4. Data Sent from PHY Mode to External MAC Controller
Figure 5. Data Sent from PHY Device to KS8999 MAC Mode
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KS8999
KS8999