KSZ8993I Micrel Inc, KSZ8993I Datasheet - Page 30

• Manufacturer Part Number: KSZ8993I
• Description: IC SWITCH 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8993I

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 64
• Operating Supply Voltage (typ): 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): 85C
• Operating Temperature (min): -40C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 2.75/3.6V
• Operating Supply Voltage (min): 2.35V
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1036

KS8993
At power-on-reset, R, C, and D1 provide the necessary ramp rise time to reset the Micrel 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.
KS8993
Figure 10. Recommended Circuit for Interfacing with CPU/FPGA Reset
KS8993
D1: 1N4148
RST
30
D1
10µF
VCC
C
R
10k
May 2005
Micrel