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DP83847 датащи(PDF) 46 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали DP83847
подробное описание детали  DsPHYTER II ??Single 10/100 Ethernet Transceiver
PDF  60 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
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DP83847 датащи(HTML) 46 Page - National Semiconductor (TI)

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6.1 Reset Timing
Note1: Software Reset should be initiated no sooner then 500
µs after power-up or the deassertion of hardware reset.
Note2: 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.
Parameter
Description
Notes
Min
Typ
Max
Units
T1.0.1
Post RESET Stabilization time
prior to MDC preamble for reg-
ister accesses
MDIO is pulled high for 32-bit serial man-
agement initialization.
3
µs
T1.0.2
Hardware Configuration Latch-
in Time from the Deassertion of
RESET (either soft or hard)
Hardware Configuration Pins are de-
scribed in the Pin Description section.
3
µs
T1.0.3
Hardware Configuration pins
transition to output drivers
3.5
µs
T1.0.4
RESET pulse width
X1 Clock must be stable for at min. of
160us during RESET pulse low time.
160
µs
VCC
HARDWARE
RSTN
MDC
32 CLOCKS
Latch-In of Hardware
Configuration Pins
Dual Function Pins
Become Enabled As Outputs
INPUT
OUTPUT
T1.0.3
T1.0.2
T1.0.1
T1.0.4
X1 Clock



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