KSZ8893-MQL Micrel Semiconductor, Inc., KSZ8893-MQL Datasheet - Page 103

• Manufacturer Part Number: KSZ8893-MQL
• Description: Integrated 3-Port 10/100 Managed Switch with PHYs
• Manufacturer: Micrel Semiconductor, Inc.

Reset Circuit
The reset circuit in Figure 28 is recommended for powering up the KSZ8893MQL if reset is triggered only by the
power supply.
The reset circuit in Figure 29 is recommended for applications where reset is driven by another device (e.g., CPU,
FPGA, etc),. At power-on-reset, R, C and D1 provide the necessary ramp rise time to reset the KSZ8893MQL
device. The RST_OUT_n from CPU/FPGA provides the warm reset after power up.
Micrel
November 2005
Figure 29. Recommended Reset Circuit for interfacing with CPU/FPGA Reset Output
KS8893M
RST
KS8893M
Figure 28. Recommended Reset Circuit
D1
RST
D1: 1N4148
C 10uF
VCC
D1
103
R 10K
VCC
D2
D1, D2: 1N4148
R 10K
C 10uF
RST_OUT_n
CPU/FPGA
KSZ8893MQL/MQLI
M9999-111705