ICS1893 Integrated Circuit Systems, ICS1893 Datasheet - Page 133

• Manufacturer Part Number: ICS1893
• Description: 3.3-V 10Base-T/100Base-TX Integrated PHYceiver
• Manufacturer: Integrated Circuit Systems

10.5.7 MII Management Interface Timing
ICS1893 Rev C 6/6/00
Table 10-14
timings of signals on the MDC and MDIO pins).
Table 10-14. MII Management Interface Timing
† The ICS1893 is tested at 25 MHz (a 40-ns period) with a 50-pF load. Designs must account for all board loading of
Figure 10-8. MII Management Interface Timing Diagram
MDC
MDIO
(Output)
MDC
MDIO
(Input)
Period
MDC.
Time
ICS1893 - Release
t1
t2
t3
t4
t5
t6
MDC Minimum High Time
MDC Minimum Low Time
MDC Period
MDC Rise Time to MDIO Valid
MDIO Setup Time to MDC
MDIO Hold Time after MDC
lists the significant time periods for the MII Management Interface timing (which consists of
t1
Parameter
t3
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
t2
t5
t4
t6
133
Figure 10-8
shows the timing diagram for the time periods.
Conditions
Chapter 10 DC and AC Operating Conditions
–
–
–
–
–
–
400†
Min.
160
160
10
10
0
Typ.
–
–
†
–
–
–
Max.
300
–
–
–
–
–
June, 2000
Units
ns
ns
ns
ns
ns
ns