Datasheet

T2.1.1
T2.1.2
32 CLOCKS
T2.1.3
OUTPUTINPUT
Vcc
X1 clock
Hardware
RESET_N
MDC
Latch-In of Hardware
Configuration Pins
Dual Function Pins
Become Enabled As Outputs
DP83849IF
SNOSAX8D –JUNE 2009–REVISED APRIL 2013 www.ti.com
4.5 AC Specifications — Power Up Timing
(1)
Parameter Description Notes Min Typ Max Units
T2.1.1 Post Power Up Stabilization time MDIO is pulled high for 32-bit serial 167 ms
prior to MDC preamble for register management initialization
accesses
X1 Clock must be stable for a min.
of 167ms at power up.
T2.1.2 Hardware Configuration Latch-in Hardware Configuration Pins are 167 ms
Time from power up described in the Pin Description
section.
X1 Clock must be stable for a min.
of 167ms at power up.
T2.1.3 Hardware Configuration pins 50 ns
transition to output drivers
(1) In RMII Mode, the minimum Post Power up Stabilization and Hardware Configuration Latch-in times are 84ms.
16 Electrical Specifications Copyright © 2009–2013, Texas Instruments Incorporated
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