KS8999I Micrel Inc, KS8999I Datasheet - Page 48

• 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

Micrel, Inc.
KS8999
Figure 21. Recommended Circuit for Interfacing with CPU/FPGA Reset
At power-on-reset, R, C, and D1 provide the necessary ramp rise time to reset the KS8999 device. The reset out
from CPU/FPGA provides warm reset after power up. It is also recommended to power up the VDD core voltage
earlier than VDDIO voltage. At worst case, the both VDD core and VDDIO voltages should come up at the same
time.
48
January 2005
KS8999