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1
GEX-P900XM
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
A
MAIN UNIT
B
A
RF MODULE
4
IC 1
1
TER_IN
AT-119
CN1
4
CN2
IC 2
1
SAT_IN
AT-119
B
C
DSP MODULE
ST19AF08BR20QMAA
C
SDO
73
2
PCM1716E-3
D
6
1
2
RF AGC DETECTOR
1
IC 7
7
3
AD8314ARM
TERRESTRIAL BRANCH
IC 3
3
3
6
3
MAX2644EXT
MAX2644EXT
SATELLITE BRANCH
IC 4
3
3
6
3
MAX2644EXT
MAX2644EXT
2
IC 8
3
3
F1
MAX2682EUT
1
IC 14
3
S-81225SG-QH
KEYED AGC CIRCUIT
Q2
Q3
VCC_2
MOBILE
ADAPTER CIRCUIT
IC 207
IC 206
TC7SH86FU
SSDEC
CDEC
34
83
PCSD
PCSD1
IC 202
IC 208
STA-450
STA-400
IC 211
16
DAC
2
3
ANTENNA
SELECT CIRCUIT
IC 6
5
1
7
IC 19
SW-475
IC 5
5
12
4
5
1st IF (SAT)
IC 12
4
16
9
3
5
F10
RF2325
2.5GHz AND IF PLL
IC 11
5
3
11
IC 13
22
RF2326
15
SI4136-BT
13
1
IC 21
2
6
TC7W14FK
IC 20
3
1
X1
AD8061ART
23.920MHZ
CN201
SDRAM
IC 203
K4S640832E-TL1H
IC 205
K4S640832E-TL1H
SAT_IF
20
IF2SA_N
15
5
IC 212
IF2TA_N
TER_IF
8
14
4
AD8131ARM
IF2TA_P
30
SAT_AGC
SAGC
29
TER_AGC
TAGC
33
SYS_CLK
XTI/MCLK
AUDIO_L
VCC2.5V
VCC3.3V
AUDIO5V
FUSE 2A
BATT.
GND
3
4
IC 9
2
3
3
4
F2
MAX2682EUT
1
1st IF (TER)
2nd MIX AND AGC AMP
17
9
5
14
IC 17
F15
8
6
12
AD61009ARS
4
2nd MIX AND AGC AMP
9
5
14
IC 18
17
F16
8
6
12
AD61009ARS
4
VCC_2
VCC
CN503
Q803
2
3.3V
S-80827ANUP-EDQ
SAT_IF2
1
2
TER_IF2
3V REGULATOR
2
1
BUP
SAT_AGC
5
6
Q814
TER_AGC
6
5
SYS_CLK
30
29
5V REGULATOR
BUP
LCH
27
28
Q811
20
19
22
21
24
23
2.5V(DSP)
26
25
28
27
3.3V(DSP)
29
30
DAC5V
8V REGULATOR
CN801
BUP
L801
BUP
3
BUP
Q801
1.4mH
2
GND
1
4
CN3
CN502
TER_IF2
TER_IF2
11
12
TER_AGC
TER_AGC
15
16
CTL
CTL
22
21
10
9
12
11
SAT_IF2
SAT_IF2
3
4
SAT_AGC
SAT_AGC
7
8
14
13
16
15
26
25
28
27
30
29
SYS_CLK
SYS_CLK
6
5
IC
2
NJM4
BUP
IC 806
1
S601
RESET
Q815
3.3V
Q810
1
5.2V
40
A
13
X
X601
15
10.00MHz
X
Q802
8.1V
51
S
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