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Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 144
BJ2.4U/BJ2.5U PA
9.
9.16.2 Diagram B2A, NXT2003 (IC 7TG0)
Figure 9-30 Internal block diagram and pin configuration
text
text
AGC
text
A/D
text
AGC
text
FAT VSB/QAM
Demodulator
text
FDC QPSK
Demodulator
A/D
text
32K x 8
SRAM
text
FEC
IF In
Sense
RF Gain
MPEG
Transport
FDC
Receive
Data Out
text
µC
text
I2C
Slave
text
BERT
text
Freq
Synth
FDC
LO
Tuner
Control
GPIO
I
2
C
Compatible
Interface
IF AGC
RF AGC
IF In
FDC
AGC
Smart Antenna
(CEA 909)
Block Diagram
Pin Configuration
NXT2003
128-pin LQFP
(14 x 20 x 1.4 mm)
1
8
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
9
3
G
AD
N
0
4
1
4
OS
_
L
A
T
X
_
CI
N
2
4
SO
_
L
A
T
X
_
CT
U
3
4
V
AO
_
D
DS
C
4
4
5
4
6
4
7
4
8
4
9
4
0
5
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
5
9
5
0
6
1
6
2
6
3
6
4
6
65
MPEG_PKT_SYNC
66
MPEG_DATA_EN
67
MPEG_DATA_7/SER_DATA
68
MPEG_DATA_6
69
MPEG_DATA_5
70
MPEG_DATA_4
71
72
MPEG_DATA_3
73
MPEG_DATA_2
74
MPEG_DATA_1
75
MPEG_DATA_0
76
VDD3.3
77
VDD1.2
78
79
80
DGND
81
VDD2.5
82
DGND
83
84
DGND
85
DGND
86
DGND
87
88
89
90
DGND
91
92
93
94
95
96
97
98
99
100
7
2
1
6
2
1
3
1
1
5
2
1
4
2
1
3
2
1
2
2
1
1
2
1
0
2
1
9
1
1
8
1
1
7
1
1
6
1
1
5
1
1
4
1
1
2
1
1
1
1
1
0
1
1
9
0
1
8
0
1
7
0
1
6
0
1
5
0
1
4
0
1
3
0
1
FDC_AGC
P
GO
I
_3
G
DD
N
P
GO
I_
2
P
GO
I_
1
P
GO
I_
0
D
D
V
3.
3
G
DD
N
D
D
V
1.
2
G
DD
N
G
DD
N
AGND
P
G
OI
_5
P
GO
I_
4
I2
D
D
A
_
E
V
A
L
S
_
CR
I2
D
D
A
_
E
V
A
L
S
_
C
R
MPEG_ERR
MPEG_CLK
2IC
_SCL
2IC
_
S
D
A
S
O
C_
CL
K
DGND
AGND
DGND
VDD2.5
AGND
DGND
O
PD
_
X
R
C
O
P
D_
X
R
D
DGND
/POWER_RESET
G
DD
N
C
UN
E
_
DGND
G
DD
N
37
38
101
102
G
D
D
N
D
D
V1
.2
D
D
V
A
D
D
V
A
.
2
D
D
V
5
FIA
_
G
C
AU
G
A
_
XC
F
R
_
A
G
C
O
_
F
E
R
_
T
E
DT
U
PD
O
C
_
T
EM
I
_
PN
GPIO_12
GPIO_11
GPIO_6
GPIO_13
GPIO_7
G
PI
O
0
1
_
P
GO
I_
8
P
GO
I_
9
C
N
.
1
D
D
V2
G
DD
N
.
3
D
D
V
3
VDD1.2
DGND
AVDD_FAT
AGND
FAT_VREF_N
FAT_VREF_P
AVDD_FAT
FAT_INP
FAT_INN
AVDD_FAT
AGND
AGND
FAT_INCM
AVDD_FDC
AVDD_FDC
AVDD_FDC
AGND
FDC_VREF_N
FDC_VREF_P
FDC_INP
FDC_INN
FDC_INCM
FS_OUTN
FS_OUTP
DGND
VDD3.3
DGND
VDD1.2
DGND
VDD3.3
DGND
VDD1.2
DGND
D
D
V3
.3
I
BE
R
_
S
AS
D
D
V
A
AGND
AGND
AVDD_PLL
DVDD_PLL
C
N
VDD1.2
DGND
G
DD
N
.
1
D
D
V2
.
3
D
D
V3
G
DD
N
.
1
D
D
V
2
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