1892YLF IDT, Integrated Device Technology Inc, 1892YLF Datasheet - Page 108

• Manufacturer Part Number: 1892YLF
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 1892YLF

• Lead Free Status / RoHS Status: Compliant

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