KSZ9021RL View Datasheet(PDF) - Micrel
Part Name
Description
Manufacturer
KSZ9021RL Datasheet PDF : 59 Pages
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Micrel, Inc.
KSZ9021RL/RN
Reset Timing
The recommended KSZ9021RL/RN power-up reset timing is summarized in the following figure and table.
Supply
Voltage
tsr
RESET_N
Figure 8. Reset Timing
Parameter
tsr
Description
Stable supply voltage to reset high
Min
Max Units
10
ms
Table 15. Reset Timing Parameters
After the de-assertion of reset, it is recommended to wait a minimum of 100µs before starting programming on the MIIM
(MDC/MDIO) Interface.
Reset Circuit
The following reset circuit is recommended for powering up the KSZ9021RL/RN if reset is triggered by the power supply.
DVDDH
D1: 1N4148
D1
KSZ9021RL/RN
RESET_N
R 10K
C 10uF
February 13, 2014
Figure 9. Recommended Reset Circuit
53
Revision 1.2
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