SMSC TMC2005-JT - Manual (Page 3)

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 I NTERFACE ....................................................................................................................................................7
O PERATING M ODE S ETUP ..........................................................................................................................................8
PLL ...........................................................................................................................................................................8
O THER S IGNALS ........................................................................................................................................................9
OPERATIONAL DESCRIPTION...........................................................................................................................10
D IRECTION D ETERMINATION ...................................................................................................................................10
D IRECTION R ELEASE ...............................................................................................................................................10
J ITTER F ILTER ..........................................................................................................................................................10
O PTION F EATURE FOR J ITTER F ILTERING .................................................................................................................11
O PTION F EATURE FOR N OISE C UT MODE .................................................................................................................11
APPLICATION NOTES ........................................................................................................................................12
PORT GROUP...........................................................................................................................................................20
V ARIOUS S ETUP .......................................................................................................................................................20
E XAMPLE F OR O PERATION M ODE S ETUP T O E ACH P ORT ........................................................................................20
N OTE FOR U NUSED PORT .........................................................................................................................................20
E XAMPLE FOR P OWER -O N R ESET C IRCUIT ..............................................................................................................20
CONNECTING THE TMC2005 WITH INTERNAL PLL...................................................................................21
M ETHOD T O C ONNECT A C RYSTAL C LOCK .............................................................................................................22
N PLLTST PIN ..........................................................................................................................................................22
CASCADING CONNECTION ................................................................................................................................23
R ING N ETWORK W ITH 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 – R X WAVEFORMS AND T X WAVEFORMS ........................................................................29
TMC2005-JT 64 PIN TQFP PACKAGE OUTLINE .............................................................................................31