SMSC TMC2005-JT TABLE OF CONTENTS

	ARCNET 5 Port HUB Controller
	Datasheet
TABLE OF CONTENTS
FEATURES..................................................................................................................................................................	1
GENERAL DESCRIPTION.......................................................................................................................................	1
PIN CONFIGURATION ............................................................................................................................................	4
BLOCK DIAGRAM....................................................................................................................................................	4
BLOCK DIAGRAM....................................................................................................................................................	5
DESCRIPTION OF PIN FUNCTIONS ....................................................................................................................	5
DESCRIPTION OF PIN FUNCTIONS ....................................................................................................................	6
TX/RX INTERFACE....................................................................................................................................................	7
OPERATING MODE SETUP ..........................................................................................................................................	8
PLL ...........................................................................................................................................................................	8
OTHER SIGNALS ........................................................................................................................................................	9
OPERATIONAL DESCRIPTION...........................................................................................................................	10
DIRECTION DETERMINATION ...................................................................................................................................	10
DIRECTION RELEASE ...............................................................................................................................................	10
JITTER FILTER..........................................................................................................................................................	10
OPTION FEATURE FOR JITTER FILTERING.................................................................................................................	11
OPTION FEATURE FOR NOISE CUT MODE .................................................................................................................	11
APPLICATION NOTES ........................................................................................................................................	12
PORT GROUP...........................................................................................................................................................	20
VARIOUS SETUP.......................................................................................................................................................	20
EXAMPLE FOR OPERATION MODE SETUP TO EACH PORT........................................................................................	20
NOTE FOR UNUSED PORT .........................................................................................................................................	20
EXAMPLE FOR POWER-ONRESET CIRCUIT ..............................................................................................................	20
CONNECTING THE TMC2005 WITH INTERNAL PLL...................................................................................	21
METHOD TO CONNECT A CRYSTAL CLOCK.............................................................................................................	22
NPLLTST PIN..........................................................................................................................................................	22
CASCADING CONNECTION ................................................................................................................................	23
RING NETWORK WITH THE TMC2005.....................................................................................................................	26
MAXIMUM GUARANTEED RATINGS*............................................................................................................	27
STANDARD OPERATING CONDITION ............................................................................................................	27
DC CHARACTERISTIC - INPUT PIN ..................................................................................................................	27
DC CHARACTERISTIC - OUTPUT PIN ..............................................................................................................	28
AC CHARACTERISTIC - CLOCK AND RESET...................................................................................................	28
AC CHARACTERISTIC – RX WAVEFORMS AND TX WAVEFORMS ........................................................................	29
TMC2005-JT 64 PIN TQFP PACKAGE OUTLINE.............................................................................................	31

SMSC TMC2005-JT Page 3 Revision 1.1 (07-24-07)

DATASHEET