SMSC COM20020 manual Instead, it must be connected to XTAL1 with

DIP PIN	PLCC PIN	NAME
NO.	NO.		SYMBOL	DESCRIPTION
				instead, it must be connected to XTAL1 with
				a 390Ω pull-up resistor, and XTAL2 should
				be left floating.
24	15,28	Power	VDD	+5 Volt Power Supply pin.
		Supply
12	7,14,22	Ground	VSS	Ground pin.

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