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ICS1892 датащи(PDF) 108 Page - Integrated Circuit Systems

номер детали ICS1892
подробное описание детали  10Base-T/100Base-TX Integrated PHYceiver
PDF  148 Pages
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производитель  ICST [Integrated Circuit Systems]
домашняя страница  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS1892 датащи(HTML) 108 Page - Integrated Circuit Systems

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ICS1892, Rev. D, 2/26/01
February 26, 2001
108
Chapter 9
Pin Diagram, Listings, and Descriptions
ICS1892 Data Sheet
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
REF_IN
53
Input
(Frequency) Reference Input.
This pin can be connected to either of the following frequency
reference sources:
A 25-MHz crystal
A 25-MHz oscillator
For the tolerance of the clock that is used, see Section 10.5.1, “Timing
for Clock Reference In (REF_IN) Pin”.
REF_OUT
52
Input
(Frequency) Reference Output.
When the frequency reference source used is a:
A 25-MHz crystal, this pin is used in combination with the REF_IN
pin.
A 25-MHz oscillator, this pin is left unconnected.
RESET*
22
Input
(System) Reset (Active Low).
When the signal on this active-low pin is logic:
– Low, the ICS1892 is in hardware reset.
– High, the ICS1892 is operational.
For more information on hardware resets, see the following:
Section 5.1.2.1, “Hardware Reset”
Section 10.5.17, “Reset: Hardware Reset and Power-Down”
Table 9-5.
Configuration Pins (Continued)
Pin
Name
Pin
Number
Pin
Type
Pin Description



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