ICS1893CK ICST [Integrated Circuit Systems], ICS1893CK Datasheet - Page 89

• Manufacturer Part Number: ICS1893CK
• Description: 3.3-V 10Base-T/100Base-TX Integrated PHYceive
• Manufacturer: ICST [Integrated Circuit Systems]

8.2.3 Configuration Pins
ICS1893CF, Rev. F, 03/01/07
Table 8-6
Table 8-6. Configuration Pins
10/100SEL
10TCSR
100TCSR
REF_IN
REF_OUT
RESETn
Name
ICS1893CF Data Sheet Rev. F - Release
Pin
lists the configuration pins.
Number
Pin
19
20
47
46
23
9
Output
Output
Output
Output
Type
Input
Input
Pin
Copyright © 2007, Integrated Device Technology, Inc.
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).
•
•
•
•
•
•
•
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 Values
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 Values
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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89
Chapter 8 Pin Diagram, Listings, and Descriptions
Pin Description
*”.
*”.
Pin”.
Section 9.3,
Section 9.3,
Mar. 2007