ICS1892 Integrated Circuit Systems, ICS1892 Datasheet - Page 124

• Manufacturer Part Number: ICS1892
• Description: 10Base-T/100Base-TX Integrated PHYceiver
• Manufacturer: Integrated Circuit Systems

10.5 Timing Diagrams
10.5.1 Timing for Clock Reference In (REF_IN) Pin
ICS1892, Rev. D, 2/26/01
Table 10-8
shows the timing diagram for the time periods.
Note:
Table 10-8. REF_IN Timing
Figure 10-1. REF_IN Timing Diagram
REF_IN
Period
Time
t1
t2
ICS1892 Data Sheet
The REF_IN switching point is 50% of V
REF_IN Duty Cycle
REF_IN Period
lists the significant time periods for signals on the clock reference in (REF_IN) pin.
Parameter
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
t1
124
DD
t2
.
Conditions
–
–
Chapter 10 DC and AC Operating Conditions
Min.
45
–
Typ.
50
40
February 26, 2001
Max.
55
–
Figure 10-1
Units
ns
%