Datasheet

DP83848VYB
www.ti.com SNLS266D –MAY 2007–REVISED APRIL 2013
4.31 AC Specifications — Isolation Timing
Parameter Description Notes Min Typ Max Units
T2.28.1 From software clear of bit 10 in the 100 µs
BMCR register to the transition from
Isolate to Normal mode
T2.28.2 From Deassertion of S/W or H/W 500 µs
Reset to transition from Isolate to
Normal mode
4.32 AC Specifications — 25 MHz_OUT Timing
Parameter Description Notes Min Typ Max Units
T2.29.1 25 MHz_OUT High/Low Time
(1)
MII mode 20 ns
RMII mode 10 ns
T2.29.2 25 MHz_OUT propagation delay
(1)
Relative to X1 8 ns
(1) 25 MHz_OUT characteristics are dependent upon the X1 input characteristics.
4.33 AC Specifications — 100 Mb/s X1 to TX_CLK Timing
Parameter Description Notes Min Typ Max Units
T2.30.1 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.
Copyright © 2007–2013, Texas Instruments Incorporated Electrical Specifications 29
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