1893AFLFT IDT, 1893AFLFT Datasheet - Page 127

• Manufacturer Part Number: 1893AFLFT
• Description: Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
• Manufacturer: IDT

Specifications of 1893AFLFT

• Rohs: yes
• Part # Aliases: ICS1893AFLFT

10.5.14 100M Media Independent Interface: Input-to-Carrier Assertion/De-Assertion
ICS1893AF, Rev. D 10/26/04
TP_RX
CRS
COL
†
unscrambled.
Table 10-21
time periods consist of timings of signals on the following pins:
•
•
•
Figure 10-15
Table 10-21. 100M MDI Input-to-Carrier Assertion/De-Assertion Timing
† The IEEE maximum is 20 bit times.
‡ The IEEE minimum is 13 bit times, and the maximum is 24 bit times.
Figure 10-15. 100M MDI Input to Carrier Assertion / De-Assertion Timing Diagram
Shown
Period
†
Time
TP_RX (that is, TP_RXP and TP_RXN)
CRS
COL
ICS1893AF Data Sheet - Release
t1
t2
t3
t4
First Bit of /J/ into TP_RX to CRS Assert †
First Bit of /J/ into TP_RX while
Transmitting Data to COL Assert †
First Bit of /T/ into TP_RX to CRS
De-Assert ‡
First Bit of /T/ Received into TP_RX to
COL De-Assert ‡
lists the significant time periods for the 100M MDI input-to-carrier assertion/de-assertion. The
shows the timing diagram for the time periods.
First bit
t2
t1
Parameter
Copyright © 2004, Integrated Circuit Systems, Inc.
All rights reserved.
127
Half-Duplex Mode
Half-Duplex Mode
Conditions
–
–
Chapter 10 DC and AC Operating Conditions
First bit of /T/
t3
t4
Min.
10
13
13
9
Typ.
–
–
–
–
Max.
14
13
18
18
October, 2004
Bit times
Bit times
Bit times
Bit times
Units