8.0 Electrical Specifications (Continued)
8.6.5 Heartbeat Timing
Parameter
T1
Description
Notes
Min
Typ
Max
Units
CD Heartbeat Delay
10 Mb/s nibble mode
10 Mb/s serial mode
10 Mb/s nibble mode
10 Mb/s serial mode
1.6
1.4
1.3
1.3
µs
µs
µs
µs
0.6
0.5
1.6
1.5
T2
CD Heartbeat Duration
TXE
TXC
COL
T2
T1
8.6.6 10 Mb/s Jabber Timing
Parameter
T1
Description
Notes
Min
Typ
Max
Units
Jabber Activation Time
10 Mb/s nibble mode
10 Mb/s serial mode
10 Mb/s nibble mode
10 Mb/s serial mode
20
20
26
26
150 ms
150 ms
750 ms
750 ms
T2
Jabber Deactivation Time
250
250
730
730
TXE
T1
T2
TD+/-
COL
Version A
83