dp83630sqx National Semiconductor Corporation, dp83630sqx Datasheet - Page 105
dp83630sqx
Manufacturer Part Number
dp83630sqx
Description
Precision Phyter - Ieee 1588 Precision Time Protocol Transceiver
Manufacturer
National Semiconductor Corporation
Datasheet
1.DP83630SQX.pdf
(126 pages)
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T2.2.1
T2.2.2
T2.2.3
T2.2.4
Parameter
18.2.2 Reset Timing
Note: It is important to choose pull-up and/or pull-down resistors for each of the hardware configuration pins that provide fast RC time constants in order to latch-
in the proper value prior to the pin transitioning to an output driver.
Post RESET Stabilization time prior to
MDC preamble for register accesses
Hardware Configuration Latch-in Time
from the Deassertion of RESET (either
soft or hard)
Hardware Configuration pins transition
to output drivers
RESET pulse width
Description
MDIO is pulled high for 32-bit serial
management initialization
Hardware Configuration Pins are
described in the Pin Description
section
X1 Clock must be stable for at min.
of 1 µs during RESET pulse low
time.
105
Notes
Min
1
Typ
50
3
3
Max
www.national.com
30136221
Units
µs
µs
ns
µs
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