Datasheet

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DP83848I
8.2.28 Isolation Timing
8.2.29 25 MHz_OUT Timing
Note: 25 MHz_OUT characteristics are dependent upon the X1 input characteristics.
Parameter Description Notes Min Typ Max Units
T2.28.1 From software clear of bit 10 in
the BMCR register to the transi-
tion from Isolate to Normal Mode
100 µs
T2.28.2 From Deassertion of S/W or H/W
Reset to transition from Isolate to
Normal mode
500 µs
Parameter Description Notes Min Typ Max Units
T2.29.1 25 MHz_OUT High/Low Time MII mode 20 ns
RMII mode 10 ns
T2.29.2 25 MHz_OUT propagation delay Relative to X1 8 ns
Clear bit 10 of BMCR
(return to normal operation
from Isolate mode)
H/W or S/W Reset
(with PHYAD = 00000)
MODE
ISOLATE
NORMAL
T2.28.2
T2.28.1
X1
T2.29.2
25 MHz_OUT
T2.29.1 T2.29.1