Datasheet

T2.31.1T2.31.1
T2.31.2
X1
CLK2MAC
NORMALISOLATE
T2.30.1
MODE
Clear Bit 10 of BMCR
(return to normal operation
from isolate mode)
DP83849IF
SNOSAX8D –JUNE 2009–REVISED APRIL 2013 www.ti.com
4.34 AC Specifications — Isolation Timing
Parameter Description Notes Min Typ Max Units
T2.30.1 From software clear of bit 10 in the BMCR register to the 100 µs
transition from Isolate to Normal Mode
4.35 AC Specifications — CLK2MAC Timing
(1)
Parameter Description Notes Min Typ Max Units
T2.31.1 CLK2MAC High/Low Time MII mode 20 ns
RMII mode 10 ns
T2.31.2 CLK2MAC propagation delay Relative to X1 8 ns
(1) CLK2MAC characteristics are dependent upon the X1 input characteristics.
4.36 AC Specifications — 100 Mb/s X1 TO TX_CLK Timing
Parameter Description Notes Min Typ Max Units
T2.32.1 X1 to TX_CLK delay
(1)
100 Mb/s Normal mode 0 5 ns
(1) X1 to TX_CLK timing is provided to support devices that use X1 instead of TX_CLK as the reference for transmit Mll data.
30 Electrical Specifications Copyright © 2009–2013, Texas Instruments Incorporated
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