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DP83849CVS/NOPB Datasheet(PDF) 79 Page - Texas Instruments |
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DP83849CVS/NOPB Datasheet(HTML) 79 Page - Texas Instruments |
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79 / 101 page  www.national.com 78 8.2 AC Specs 8.2.1 Power Up Timing Note: In RMII Mode, the minimum Post Power up Stabilization and Hardware Configuration Latch-in times are 84ms. Parameter Description Notes Min Typ Max Units T2.1.1 Post Power Up Stabilization time prior to MDC preamble for register accesses MDIO is pulled high for 32-bit serial man- agement initialization X1 Clock must be stable for a min. of 167ms at power up. 167 ms T2.1.2 Hardware Configuration Latch- in Time from power up Hardware Configuration Pins are de- scribed in the Pin Description section X1 Clock must be stable for a min. of 167ms at power up. 167 ms T2.1.3 Hardware Configuration pins transition to output drivers 50 ns Vcc Hardware RESET_N MDC 32 clocks Latch-In of Hardware Configuration Pins Dual Function Pins Become Enabled As Outputs input output T2.1.3 T2.1.2 T2.1.1 X1 clock |
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