Navman 30 User Manual

Jupiter 30 or Jupiter 20 GPS Module

16
17

18
19
20

21

22
23
24
25
26
27
28
29
30

J1.coaxial.connector.

MCX, SMA or MMCX

GND

1PPS

C4.

27pF

C3.

1nF

3 V RTC lithium.

backup battery

1nF

C7

GND

I/P 1

2

DGND

15
14
13
12
11

10
9
8
7
6
5
4
3

2
1

AGND

C2.

10nF

C1.

1µF

POWER

C5.

27pF

C6.

27pF

TP

TPO
TPI

SDI

SDO

R1

R2

10K

10K

serial.data.ports.

to.application.processor.

or RS232 level converter

GND
RF_IN
GND
V_ANT
VCC_RF

V_BATT
RESET
GPIO/GPS_FIX
GPIO
GPIO
GPIO/WAKE_UP
GPIO/ANT_OC
GPIO/ANT_CTRL
GPIO/1PPS
GND

GND
GND
GND
GND
GND

GND

RF_ON

RXB

TXB
TXA

RXA

BOOT

GND

PWRIN

GPIO/NANT_SC

RF

Digital

LA000577C © 2006 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice.

2.4.3 Decoupling
The schematic in Figure 2-2 illustrates a suggested method of decoupling. These are 

capacitors C1 to C7. This level of decoupling may not be required in a particular application, 

in which case these capacitors could be omitted. Only the signal lines used in the application 

require decoupling.
All capacitors are highly recommended if the module will experience substantial 

electromagnetic interference (EMI). All low value capacitors should be as close as possible 

to the module pad with a short connection to the ground plane. Any data lines that have not 

been properly shielded are susceptible to data corruption. Refer to Table 2-3 for suggested 

values of decoupling relative to the function desired.

PWRIN

1

1 µF||1 nF

BOOT

3

27 pF

RXA

4

27 pF

TXA

5

27 pF

TXB

6

27 pF

RXB

7

27 pF

NANT_SC

8

27 pF

RF_ON

9

27 pF

ACTIVE_PWR

19

1 nF

VCC_RF

20

1 nF

V_BATT

21

1 µF||1 nF

NRESET

22

27 pF

GPS_FIX

23

27 pF

GPIO13

24

27 pF

GPIO4

25

27 pF

WAKEUP

26

27 pF

ANT_OC

27

27 pF

ANT_CTRL

28

27 pF

1PPS

29

27 pF