ICS1893 Integrated Circuit Systems, ICS1893 Datasheet - Page 139

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

10.5.13 100M MII: Carrier Assertion/De-Assertion (Half-Duplex Transmission)
ICS1893 Rev C 6/6/00
Table 10-20
half-duplex transmission. The time periods consist of timings of signals on the following pins:
•
•
•
Figure 10-14
Table 10-20. 100M MII Carrier Assertion/De-Assertion (Half-Duplex Transmission Only)
Figure 10-14. 100M MII Carrier Assertion/De-Assertion Timing Diagram
TXEN
TXCLK
CRS
Period
Time
TXEN
TXCLK
CRS
t1
t2
ICS1893 - Release
TXEN Sampled Asserted to CRS Assert
TXEN De-Asserted to CRS De-Asserted
lists the significant time periods for the 100M MII carrier assertion/de-assertion during
shows the timing diagram for the time periods.
(Half-Duplex Transmission Only)
t1
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
Parameter
139
t2
Chapter 10 DC and AC Operating Conditions
Condi-
tions
Min.
0
0
Typ.
3
3
Max.
4
4
June, 2000
Bit times
Bit times
Units