KSZ8851-16MLLU TR Micrel, KSZ8851-16MLLU TR Datasheet - Page 79

• Manufacturer Part Number: KSZ8851-16MLLU TR
• Description: Ethernet ICs Single-Port Ethernet Controller (Automotive Grade)
• Manufacturer: Micrel

Specifications of KSZ8851-16MLLU TR

• Rohs: yes
• Product: Ethernet Controllers
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT

Reset Circuit Diagram
Micrel recommends the following discrete reset circuit as shown in Figure 15 when powering up the KS8851 device. For
applications where the reset signal comes from another device (e.g., CPU, FPGA, etc), we recommend the reset circuit
shown in Figure 16.
At power-on-reset, R, C, and D1 provide the necessary ramp rise time to reset the Micrel device. The reset out
RST_OUT_n from CPU/FPGA provides the warm reset after power up.
May 2012
Micrel, Inc.
Figure 16. Recommended Circuit for Interfacing with CPU/FPGA Reset
KSZ8851
RST
Figure 15. Recommended Reset Circuit
KSZ8851
D1
D1: 1N4148
RST
10µF
VCC
C
D1
R
10k
79
D2
10µF
VCC
D1, D2: 1N4148
C
R
10k
RST_OUT_n
CPU/FPGA
KSZ8851-16MLL/MLLI
M9999-050112-2.1