SMSC TMC2005-JT NAME, NAME, INPUT, INPUT, OUTPUT, OUTPUT, FEATURE, FEATURES, DESCRIPTION, DESCRIPTION, Other Signals, Must always connect to VDD

ARCNET 5 Port HUB Controller

Datasheet

			INPUT/
	FEATURE	NAME	OUTPUT		DESCRIPTION
		nPLLTST	INPUT	Test pin for PLL.
				Must always connect to VDD.
		AVDD		Analog power supply
				Using PLL: Analog power supply. There are some
				limits on PCB pattern.
				Using no PLL: Power supply (+5V) same as VDD1~6.
		AVSS		Analog ground
				Using PLL: Analog ground. There are some limits on
				PCB pattern.
				Using no PLL: Use a ground same as VSS1~8.
Other Signals
				INPUT/
	FEATURES		NAME	OUTPUT	DESCRIPTION
	CRYSTAL		XTLI	INPUT	Connect a 20MHz crystal.
	INTERFACE				When supplying an external clock,
					input the clock to this pin.
	CRYSTAL		XTLO	OUTPUT	Connect a 20MHz crystal.
	INTERFACE				When supplying an external clock, it
					must be open.
	SYSTEM RESET		nRST	INPUT	Reset for initializing TMC2005. (active
	INTERFACE				Low)
	TEST PIN		CKO	OUTPUT	Output internal clock of TMC2005.
	TEST PIN		nCKOEN	INPUT	Output control of CKO.
					0: Output internal clock on CKO.
					1: Always output Low level on CKO.
					Set “1” Normally.
	TEST PIN		RXFLT	INPUT	It must be open
	TEST PIN		NC [1:2]		It must be open
	POWER SUPPLY		VDD [1:6]		Power supply (+5V)
	GROUND		VSS [1:8]		Ground

SMSC TMC2005-JT Page 9 Revision 1.1 (07-24-07)

DATASHEET