8.0 Electrical Specifications
8.10.2 Remote Loopback
Parameter
Description
Remote Loopback
Notes
Min
Typ Max Units
25 ns
T1
100 Mb/s only
Remote Loopback Timing
RD+/-
TD+/-
IDLE
Start of Packet
T1
IDLE
Start of Packet
8.11 Isolation Timing
8.11.1 PHY Isolation Timing
Parameter
Description
Notes
Min
Typ Max Units
T1
From software clear of bit 10 in
the BMCR register to the
transition from Isolate to Normal
Mode
100
µs
T2
From Deassertion of S/W or H/W
Reset to transition from Isolate to
Normal mode
500
µs
Clear bit 10 of BMCR
(return to normal operation
from Isolate mode)
T1
H/W or S/W Reset
(with PHYAD = 00000)
T2
Mode
Normal
Isolate
Version A
88
TI [ TEXAS INSTRUMENTS ]
