KSZ8864RMNI MICREL [Micrel Semiconductor], KSZ8864RMNI Datasheet - Page 110

• Manufacturer Part Number: KSZ8864RMNI
• Description: Integrated 4-Port 10/100 Managed Switch with Two MACs MII or RMII Interfaces
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
KSZ8864RMN
Reset Circuit Diagram
Micrel recommends the following discrete reset circuit, as shown in Figure 26, when powering up the KS8895MQ
device. For the application where the reset circuit signal comes from another device (e.g., CPU, FPGA, etc), Micrel
recommends the reset circuit, as shown in Figure 27.
Figure 26. Recommended Reset Circuit
Figure 27. Recommended Circuit for Interfacing with CPU/FPGA Reset
In the reset circuit, R, C, and D1 provide the necessary ramp rise time to reset the Micrel device. The D2 is for isolation
between Micrel device and CPU/FPGA. The reset out RST_OUT_n from CPU/FPGA can provides the warm reset after
power-up.
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September 2011
M9999-092011-1.4