Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support

Datasheet

6.5Reset Timing

T11.1

nRST

T11.2T11.3

Configuration

Signals

T11.4

Output drive

Figure 6.10 Reset Timing DiagramTable 6.11 Reset Timing Values

PARAMETER

DESCRIPTION

MIN

TYP

MAX

UNITS

NOTES

 

 

 

 

 

 

 

T11.1

Reset Pulse Width

100

 

 

us

 

 

 

 

 

 

 

 

T11.2

Configuration input setup to

200

 

 

ns

 

 

nRST rising

 

 

 

 

 

 

 

 

 

 

 

 

T11.3

Configuration input hold after

10

 

 

ns

 

 

nRST rising

 

 

 

 

 

 

 

 

 

 

 

 

T11.4

Output Drive after nRST rising

20

 

800

ns

20 clock cycles for

 

 

 

 

 

 

25 MHz clock

 

 

 

 

 

 

or

 

 

 

 

 

 

40 clock cycles for

 

 

 

 

 

 

50MHz clock

 

 

 

 

 

 

 

Revision 1.0 (05-28-09)

64

SMSC LAN8720/LAN8720i

 

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