1893BKILFT IDT, Integrated Device Technology Inc, 1893BKILFT Datasheet - Page 96
1893BKILFT
Manufacturer Part Number
1893BKILFT
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.1893BKILFT.pdf
(138 pages)
Specifications of 1893BKILFT
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8.2.3 Configuration Pins
ICS1893BF, Rev. E, 8/11/09
Table 8-6
Table 8-6. Configuration Pins
10/100SEL
10TCSR
100TCSR
REF_IN
REF_OUT
RESETn
Name
Pin
ICS1893BF Data Sheet - Release
lists the configuration pins.
Number
Pin
19
20
47
46
23
9
Output
Output
Output
Output
Type
Input
Input
Pin
10Base-T / 100Base-TX Select.
10M Transmit Current Set Resistor.
100M Transmit Current Set Resistor.
(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)
(Frequency) Reference Output.
This pin is used with a crystal.
(System) Reset (Active Low).
•
•
•
•
•
•
•
Copyright © 2009, IDT, Inc.
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.
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
“Recommended Component
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
“Recommended Component
When the signal on this active-low pin is logic:
– Low, the ICS1893BF is in hardware reset.
– High, the ICS1893BF 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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96
Chapter 8 Pin Diagram, Listings, and Descriptions
Pin Description
Values”.
Values”.
Pin”.
Section 9.3,
Section 9.3,
August, 2009
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