SMSC TMC2005-JT Manual De Usuario
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