XT55 AVL User’s Guide
Confidential/Released
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XT55_avl_ug_V03
Page 36 of 37
28.06.2004
5 Example application
G P S
G S M
L D O
3 V 3
S D O 2
S D I2
R X D 0
T X D 0
X T 5 5
C C V C C
C C D A T A
S IM
C C C L K
4 7 0 u F
C C R S T
C C IN
C C G N D
+
1 n F
2 0 0n F
G P S A n te n n a (3 V )
G S M A n te n n a
V C C
V C C _ R F
V A N T
B A T T +
IG T
B A T T _ T E M P
P O W E R
S D I1 S D O 1
O N /O F F
V D D
O N /O F F
*)E S D p ro te ctio n
e .g . 1 /5 E S D A 6 V 1 -5 W 6
3 3 p F
3 3 p F
2 .2 u F
A V L
B A T T +
4 7 0 k
3 V 3
G P IO 3
B A T T +
G P IO 1 0
G P IO 4 R F P C 1
G P IO 8
R F P C 0
G N D
B O O T
S E L
1 0 k
G P IO 1 5
3 .3 k
+
L i-Io n
b a tte ry p a ck
C h a rg e r
+
4 7 0
N T C
*)
*)
1 0 0 n F
1 0 k
3 k 3
S I3 4 4 1 D V
4 V 3
1 S S 3 5 5
C R S 0 4
C H A R G E
M IC P 2
M IC N 2
E P N 1
E P P 1
L N A
T P
T P
e
e
m
m
e = ea rp iec e
m = m ic
*)
*)
*)
3 3 p F
3 3 p F
3 3 p F
*)
3 3 p F
6 R 8
6 R 8
B L M 1 8 H G
6 0 1
2 x B L M 1 8 H G
6 0 1
A la rm 2
A la rm 1
0 R
n o t m o un ted
B C 8 4 7
3 V 3
4 7 0 k
1 0 0 k
T P
T P
3 3 p F
1 µ F
T P
4 7 0 k
4 7 0 k
4 7 0 k
B C
8 4 7
3 V 3
T P
T P = T e s tp o in t
T P
5 .5 V - 8 V
5 0 0 m A
M IC P 1
M IC N 1
H e a d s e t
2 x
1 0 0 n F
Figure 13: Example application of XT55 module with integrated AVL software