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ICS1893CF 数据表(PDF) 89 Page - Integrated Circuit Systems

部件名 ICS1893CF
功能描述  3.3-V 10Base-T/100Base-TX Integrated PHYceive
PDF  126 Pages
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制造商  ICST [Integrated Circuit Systems]
网页  http://www.icst.com
标志 ICST - Integrated Circuit Systems

ICS1893CF 数据表(HTML) 89 Page - Integrated Circuit Systems

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Chapter 8 Pin Diagram, Listings, and Descriptions
ICS1893CF, Rev. F, 03/01/07
Mar. 2007
89
ICS1893CF Data Sheet Rev. F - Release
Copyright © 2007, Integrated Device Technology, Inc.
All rights reserved.
8.2.3 Configuration Pins
Table 8-6 lists the configuration pins.
Table 8-6. Configuration Pins
Pin
Name
Pin
Number
Pin
Type
Pin Description
10/100SEL
9
Output
10Base-T / 100Base-TX Select.
• This pin acts as an output that indicates the current status of this
pin. In this case, when the signal on this pin is logic:
– Low, this pin indicates 10Base-T operations are selected.
– High, this pin indicates 100Base-TX operations are selected.
10TCSR
19
Output
10M Transmit Current Set Resistor.
• A resistor, connected between this pin and ground, is required to
establish the value of the transmit current used in 10Base-T mode.
• The value and tolerance of this resistor is specified in Section 9.3,
“Recommended Component Values *”.
100TCSR
20
Output
100M Transmit Current Set Resistor.
• A resistor, connected between this pin and ground, is required to
establish the value of the transmit current used in 100Base-TX
mode.
• The value and tolerance of this resistor is specified in Section 9.3,
“Recommended Component Values *”.
REF_IN
47
Input
(Frequency) Reference Input.
This pin is connected to a 25-MHz oscillator. For a tolerance, see
Section 9.5.1, “Timing for Clock Reference In (REF_IN) Pin”.
REF_OUT
46
Output
(Frequency) Reference Output.
This pin is used with a crystal.
RESETn
23
Input
(System) Reset (Active Low).
• When the signal on this active-low pin is logic:
– Low, the ICS1893CF is in hardware reset.
– High, the ICS1893CF is operational.
• For more information on hardware resets, see the following:
– Section 4.1.2.1, “Hardware Reset”
– Section 9.5.16, “Reset: Hardware Reset and Power-Down”



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