COM20020IP3V datasheet(74/82 Pages) SMSC

Part #	COM20020IP3V

Description	Universal Local Area Network Controller with 2K x 8 On-Board RAM

PDF	82 Pages

Scroll/Zoom	100%

Manufacturer	SMSC [SMSC Corporation]

Direct Link	http://www.smsc.com

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74 / 82 page

DISCONTINUED DATASHEET

FIGURE 21 – TTL INPUT TIMING ON XTAL1 PIN

FIGURE 22 – RESET AND INTERRUPT TIMING

Parameter

Input Clock High Time

Input Clock Period

min

max

units

XTAL1

Input Clock Frequency

100

Input Clock Low Time

typ

MHz

Frequency Accuracy*

-200

200

ppm

Note*: Input clock frequency must be 20 MHz ( 100ppm or better) to use the internal Clock Multiplier.

t5 is applied to crystal oscillaton.

4.0V

1.0V

50% of VDD

Parameter

nRESET Pulse Width***

min

max

units

nRESET

nINTR High to Next nINTR Low

typ

nINTR

5TXTL*

EF = 0

EF = 1

TDR**/2

4TXTL*

Note*: TXTL is period of external XTAL oscillation frequency.

Note**: TDR is period of Data Rate (i.e. at 2.5 Mbps, TDR = 400 nS)

Note***: When the power is turned on, t1 is measured from stable XTAL

oscillation after VDD was over 4.5V.

COM20020IP3V Datasheet(PDF) 74 Page - SMSC Corporation

COM20020IP3V Datasheet(HTML) 74 Page - SMSC Corporation

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