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ARCNET 5 Port HUB Controller
Datasheet
SMSC TMC2005-JT Page 3 Revision 1.1 (07-24-07)
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-ON RESET 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