KSZ9021GN TR Micrel Inc, KSZ9021GN TR Datasheet - Page 50
KSZ9021GN TR
Manufacturer Part Number
KSZ9021GN TR
Description
Specifications: Number of Drivers/Receivers: 8/8 ; Type: Transceiver ; Voltage - Supply: 3.135 V ~ 3.465 V ; Package / Case: 64-VFQFN Exposed Pad ; Packaging: Tape & Reel (TR) ; Protocol: Gigabit Ethernet ; Lead Free Status: Lead Free ; RoHS Stat
Manufacturer
Micrel Inc
Datasheet
1.KSZ9021GN_TR.pdf
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Micrel, Inc.
Reset Timing
The recommended KSZ9021GN power-up reset timing is summarized in the following figure and table.
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 KSZ9021GN if reset is triggered by the power supply.
September 2010
Parameter
t
sr
Description
Stable supply voltage to reset high
KSZ9021GN
Figure 13. Recommended Reset Circuit
RESET_N
Table 15. Reset Timing Parameters
D1: 1N4148
Figure 12. Reset Timing
D1
50
DVDDH
R 10K
C 10uF
Min
10
Max
Units
ms
M9999-091010-1.1
KSZ9021GN
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