Datasheet

9.0 Electrical Specifications (Continued)
84 www.national.com
9.10 Isolation Timing
Parameter Description Notes Min Typ Max Units
T10.23.1 From software clear of bit 10 in
the BMCR register to the transi-
tion from Isolate to Normal Mode
100 µs
T10.23.2 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)
H/W OR S/W RESET
(WITH PHYAD ≠ 00000)
MODE
ISOLATE
NORMAL
T10.23.2
T10.23.1