Figure 9.2-1.Radio Interconnect Block Diagram - Motorola ASTRO XTS 2500 Service Manual

9.2-2
N I T _ M C I _ P
n I e t n r l a M c i B a i s
R 7 5 , 1 R 7 5 , 3
C 7 5 , 1
C 7 5 , 3 C 7 5 5
M U
E x e t n r l a M c i B a i s
E X T _ M C I _ P
R 7 5 , 0 R 7 5 , 2
C 7 5 , 0 C 7 5 2
C 7 5 4
M A K O _ C
S P _ I M S I
S P _ I M O
S C K B
A B A C U S I I I
U 4 0 1
R X _ S S _ I F S Y N C
R X _ S S _ I C L K 3 3
R X _ S S _ I D A T A
P a i r t t o S A P B / B P
P a i r t t o S P B I C O D E C _ R
C O D E C _ D
M A K O _ C S
C O D E C _ F S
S P _ I M S I O B 4
S P _ I M O S B I
S C K B
V C _ O
H P & L P
F t l i r e = 2 2 k H , z
V C _ O U
2 0 0 H z
P A _
n I e t n r l a
S p e a k r e =
P A _
2 8 o h m s
E x e t n r l a
S p e a k r e
Figure 9.2-1. Radio Interconnect Block Diagram
August 16, 2007
M A K O C I U 7 0 1
A m p G 2
P e r a - m p
C O D E C
G a n i = 3 - 0
G 1 G a n i
A D / 1 6 B - t i
X o t 0 d B
= 1 5 d B
H P F = 2 0 0 H z
& L P F = 3 4 .
k H z c u o t f f
S C O D E C _ T X
O B 4 C O D E C _ F S Y N C
C O D E C _ D C L K
S B I
P a i r t t o P a i r t t o R F D A /
S P B I S A P / B B P U 2 0 1
3
T X _ S S _ I F S Y N C
T X _ S S _ I C L K
T X _ D A T A
M A K O C I U 7 0 1
C O D E C
D g i t i l a
1 6 B - t i
L P F = 3 4 . k H z
G 1 D g i t i l a
D A /
G a n i = 0 r o
1 d B
G 4
G 3
P e r a m p =
X
t A e t n u t a r o
0 o t 1 0
C L K
d = 5 - 2 o t 0
B
Y N C
d B
U T _ P
G 5
E X T P A
= 2 6 d B
T _ M
P A
C o n r t l o
N I _ M
G 6
N I T P A
N I _ P
= 2 6 d B
R e e f e r n c e V C O B
O c s l l i t a r o U 2 5
L o o p
V C O
E P C I
F t l i r e
Y 2 0 0
F a r c N
U 2 0 1
V C O
M O D
N I
D A C L P F
U 8 1 1 F L 2 0 0
A B A C U S I I I U 4 0 1
C y r t s l a
F t l i r e
F L 51
S a m p e l 2 N D
C k l L O
UHF1 Schematics, Board Overlays, and Parts Lists
T X T X D r v i r e P o w r e
C I
B u f f r e A m p i f i l r e M o d u e l
0
Q 2 7 2 U 1 0 1 Q 1 0 1
i D e r t c o i n l a
C o u l p r e
R F P o w r e
D e e t t c r o A n e t n n
D 1 72, S w c t i h
D173
P C C I
U 1 0 2
T e m p e a r u t e r
S e n s e
U 1 0 3
P e r s e e l t c r o R X L N A P e r s e e l t c r o
M x i r e
F t l i r e Q 29 F t l i r e
U 1
a
T o
A n e t n n a
H r a m o n c i
F t l i r e
6816985H01-B