XT55 AVL User’s Guide
Confidential/Released
s
mo b i l e
XT55_avl_ug_V03 Page 36 of 37 28.06.2004

5 Example application

GPS GSM
LDO
3V3
SDO2 SDI2 RXD0 TXD0
XT55
CCVCC
CCDATA SIM
CCCLK
470uF
CCRST
CCIN
CCGND
+
1nF 200nF
GPS Antenna (3V) GSM Antenna
VCC
VCC_RF
VANT
BATT+
IGT
BATT_TEMP
POWER
SDI1 SDO1
ON/OFF
VDD
ON/OFF
*)ESD protection
e.g. 1/5 ESDA6V1-5W6
33pF 33pF 2.2uF

AVL

BATT+
470k
3V3
GPIO3
BATT+
GPIO10
GPIO4RFPC1
GPIO8
RFPC0
GND
BOOT
SEL
10k
GPIO15
3.3k
+
Li-Ion
battery pack
Charger
+
470
NTC
*)
*)
100nF
10k
3k3
SI3441DV
4V3
1SS355
CRS04
CHARGE
MICP2
MICN2
EPN1
EPP1
LNA
TP
TP
eemm
e = earpiece
m = mic
*)*)
*)
33pF 33pF
33pF
*) 33pF
6R8
6R8
BLM 18HG
601
2 x BLM 18HG
601
Alarm2
Alarm1
0R
not mounted
BC847
3V3
470k
100k
TP TP
33pF
1µF TP 470k
470k
470k
BC
847
3V3
TP
TP = Testpoint
TP
5.5V - 8V
500mA
MICP1
MICN1
Headset
2x
100nF
Figure 13: Example application of XT55 module with integrated AVL software