2010-06-30
Page 4 of 42
IT430_Tech_doc.doc
CONTENTS
_______________________________________________________________________
1
GENERAL DESCRIPTION...............................................................................7
1.1
Block diagram.......................................................................................8
1.2
Frequency plan .....................................................................................8
2
SPECIFICATIONS ...........................................................................................9
2.1
General..................................................................................................9
2.2
Absolute Maximum Ratings ...............................................................10
3
OPERATION.................................................................................................. 11
3.1
Operating modes ................................................................................11
3.2
Full on mode ....................................................................................... 11
3.2.1
Host port configuration .............................................................11
3.2.2
Power management system modes.......................................... 11
3.3
Hibernate state ...................................................................................12
3.4
Reset state ..........................................................................................13
4
CONNECTIVITY ............................................................................................14
4.1
Signal assignments ............................................................................ 14
4.2
Power supply ......................................................................................16
4.3
Host Port Configuration: RTS_N and CTS_N .................................... 18
4.3.1
Host Port UART .......................................................................18
4.3.2
Host Port SPI ........................................................................... 18
4.3.3
Host Port I
2
C ............................................................................19
4.4
ON_OFF control input ........................................................................19
4.5
Reset input..........................................................................................20
4.6
Antenna input .....................................................................................20
4.6.1
Active GPS antenna ................................................................. 21
4.6.2
Jamming Remover ...................................................................21
4.7
Dead Reckoning I
2
C bus .................................................................... 21
4.8
Time Mark TM .....................................................................................22
4.9
WAKEUP ............................................................................................. 22
4.10
Interrupt inputs EIT and EIT2............................................................. 22
4.10.1
EIT ...........................................................................................22
4.10.2
EIT2 .........................................................................................23
4.11
ELCK ...................................................................................................23
4.12
TSYNC ................................................................................................. 23
