DP83848C_07 Datasheet, PDF (80/82 Pages) National Semiconductor (TI) – PHYTER® - Commercial Temperature Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver

8.2.28 Isolation Timing
Clear bit 10 of BMCR
(return to normal operation
from Isolate mode)
H/W or S/W Reset
(with PHYAD = 00000)
MODE
Parameter
Description
T2.28.1
From software clear of bit 10 in
the BMCR register to the transi-
tion from Isolate to Normal Mode
T2.28.2
From Deassertion of S/W or H/W
Reset to transition from Isolate to
Normal mode
8.2.29 25 MHz_OUT Timing
T2.28.1
T2.28.2
ISOLATE
NORMAL
Notes
Min Typ Max Units
100 µs
500 µs
X1
25 MHz_OUT
T2.29.1
T2.29.2
T2.29.1
Parameter
Description
T2.29.1
25 MHz_OUT High/Low Time
T2.29.2
25 MHz_OUT propagation delay
Notes
MII mode
RMII mode
Relative to X1
Note: 25 MHz_OUT characteristics are dependent upon the X1 input characteristics.
Min Typ Max Units
20
ns
10
ns
8
ns
80
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