DJLXT972ALC.A4 Cortina Systems Inc, DJLXT972ALC.A4 Datasheet - Page 58

• Manufacturer Part Number: DJLXT972ALC.A4
• Manufacturer: Cortina Systems Inc

Specifications of DJLXT972ALC.A4

• Lead Free Status / RoHS Status: Not Compliant

LXT972A PHY
Datasheet
249186, Revision 5.2
13 September 2007
Figure 25
Table 32
Figure 26
Table 33
Cortina Systems
10BASE-T Jabber and Unjabber Timing
10BASE-T Jabber and Unjabber Timing
10BASE-T SQE (Heartbeat) Timing
PHY 10BASE-T SQE (Heartbeat) Timing
®
Maximum transmit time
Unjabber time
1. Typical values are at 25 °C and are for design aid only, not guaranteed, and not subject to production
COL (SQE) Delay after TX_EN off
COL (SQE) Pulse duration
1. Typical values are at 25 °C and are for design aid only, not guaranteed, and not subject to production
TX_EN
LXT972A Single-Port 10/100 Mbps PHY Transceiver
testing.
testing.
COL
TXD
Parameter
TX_CLK
TX_EN
Parameter
COL
Symbol
t1
t2
t
Symbol
1
t1
t2
Min
250
20
0.65
Min
0.5
t
1
Typ
Typ
–
–
–
–
1
1
Max
Max
1.6
1.5
150
750
t
2
Units
7.2 AC Timing Diagrams and
us
us
Units
ms
ms
t
2
Test Conditions
B3458-01
Test Conditions
B3455-01
–
–
–
–
Parameters
Page 58