Service manual

8.13. MT5112 ASIC
GLOBAL SIGNAL
CLOSE TO MT5112
Digital 3.3V Bypass Caps
Analog 3.3V Bypass Caps
Digital 1.8V Bypass Caps
TUNER INTERFACE
TS INPUT
MODIFIED IN V6
RESERVE HEAT-SINK SPACE
ATSC
NTSC
NOTE 3V3 LEVEL
TUNER_SW=0 Y=ATSC
IDT_OE = 0 OUTPUT ENABLE
DV18
DV33_DM
REFTOP
XTAL2
DVDD18
XTAL1
AVDD33
DVDD33
IF_AGCIF_AGCIF_AGC
DVDD18
TS1DATA3
TS1DATA2
AVDD33
DVDD33
DVDD18
AVDD3
DVDD33 DVDD18
AVDD33
DVDD33
DVDD33
AVDD33
DVDD18
DVDD33
AVDD33
ADVDD33_2
MT5112_IF_AGC
TS1SYNC
TS1CLK
TS1VALID
FAT_IN-
FAT_IN+
DVDD18
AVDD33
TS1DATA1
TS1DATA0
OSDA_MST
ADVDD33_1
OSCL_MST
ORESET_1
DVDD18
AVDD5
AVDD33
TUNER_SDA
TUNER_SCL
MT5112_IF_AGC
DVDD33
REFBOT
VCMEXT
IF_AGC
FAT_IN-
FAT_IN+
TS1ERROR
TS1SYNC
TS1VALID
TS1DATA[0..7]
OSCL_MST
OSDA_MST
IF_AGCIF_AGCIF_AGC
TS1ERROR
TS1CLK
+5V_TUNER
TUNER_SCL
TUNER_SDA
TUNER_SCL1
ORESET_1
TUNER_SCLO
TUNER_SDAO
TUNER_SDA1
TUNER_SW TUNER_SDAO
TUNER_SCLO
TUNER_SDA1
TUNER_SCL1
IOSDA
IOSCL
TUNER_SW
SCLIOSCL
IOSDA SDA
SCL
IOSDA
SDA
IOSCL
GND
TS1DATA4 TS1DATA6 TS1DATA7 TS1DATA5
GND
IDT_OE
DV1814
GND7,12,14,15,16,17,18
DV33_DM14
IF_AGC7
FAT_IN-7
FAT_IN+7
TS1ERROR15
TS1SYNC15
TS1VALID15
TS1DATA[0..7]15
OSDA_MST18
OSCL_MST18
TS1CLK15
+5V_TUNER7,14
ORESET_112,15,17
TUNER_SCLO7
TUNER_SDAO7
TUNER_SW3
SDA 3,10,23,26
SCL 3,10,23,26
IOSDA 3,10,23,26
IOSCL 3,10,23,26
IDT_OE 3
DVDD33
DV18
DV33_DM
AVDD33DV33_DM AVDD33
DVDD18
DVDD33
DVDD18
AVDD33 AVDD3
AVDD33 AVDD5
AVDD33 ADVDD33_1
AVDD33 ADVDD33_2
DVDD33
DVDD18
DV33_DM
DV33_DM
DV33_DM
C830 0.1uF
C0603/SMD
L810
R60/0603 300mA
BEAD/SMD/0603
C853
0.1uF
C0603/SMD
L807
R121/0603 3A
L0603
C835
18pF
C0603/SMD
R827
1K
R0603/SMD
RP80
33x4
RN0603/SMD
1 2 3 4 5 6 7 8
R833
4.7K
R0603/SMD
R802
1K
R0603/SMD
L808
R121/0805 6A
BEAD/SMD/0805
I805
IDTQS3VH257
TSSOP16/SMD
6
2
3
1 4
5
7
8
14
15
13
11
12
16
10
9
I1B
I0A
I1A
SYA
I0B
YB
GND
I0D
E#
I1D
I0C
YD
VCC
I1C
YC
C859
0.1uF
C0603/SMD
C838
0.1uF
C0603/SMD
L812
R60/0603 300mA
BEAD/SMD/0603
C848
0.1uF
C0603/SMD
C841
0.1uF
C0603/SMD
C846
0.1uF
C0603/SMD
C857
0.1uF
C0603/SMD
C849
0.1uF
C0603/SMD
C862
0.1uF
C0603/SMD
R828
1M
R0603/SMD
R831
4.7K
R0603/SMD
C860
0.1uF
C0603/SMD
C828
10nF
C0603/SMD
L811
R121/0805 6A
BEAD/SMD/0805
C845
0.1uF
C0603/SMD
R826 4.7K R0603/SMD
C861
0.1uF
C0603/SMD
RP81
33x4
RN0603/SMD
1 2
3 4
5 6
7 8
C837
0.1uF
C0603/SMD
L814
R60/0603 300mA
BEAD/SMD/0603
C833
0.1uF
C0603/SMD
C825
47nF
C0603/SMD
+
C836
10uF/50v
C10UF16V/D5H11
L813
R121/0805 6A
BEAD/SMD/0805
RP82
33x4
RN0603/SMD
1 2
3 4
5 6
7 8
R825 4.7K R0603/SMD
C843
0.1uF
C0603/SMD
C831
10uF/10v
C0805/SMD
C844
0.1uF
C0603/SMD
C858
0.1uF
C0603/SMD
R830
4.7K
R0603/SMD
MT5112AD/BD TQFP-100
I807
MT5112AD_BD/TQFP100
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
37
38
39
40
41
42
43
44
45
46
47
48
49
50
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
NC NC AVDD2 NC NC NC AVSS9 NC NC AVDD9 AVSS5 AVDD5 NC NC ADVDD33 DGND33 DVDD33 DVDD18 DGND18 NC GPIO0(P1.0) TS_DATA7 TS_DATA6 TS_DATA5 TS_DATA4
DVDD33
DGND33
TS_DATA3
TS_DATA2
DVDD18
DGND18
TS_DATA1
TS_DATA0
TS_SYNC
DVDD33
DGND33
TS_CLK
TS_VAL
TS_ERR
DVDD18
DGND18
DVDD33
DGND33
HOST_DATA
DVDD18
DGND18
HOST_CLK
RESET_
GPIO1(P1.1)
NC
DVDD18
DGND18 RF_AGC
IF_AGC
DGND33
DVDD33
TUNER_CLK
TUNER_DATA
SA1 SA0
DGND18
DVDD18
DGND18
ANT_TX(POUT3.1)
DGND33
DVDD33
ANT_RX(PIN3.0)
ANT_DET(PIN3.1)
GPIO3(P1.3)
DGND18
DVDD18
GPIO2(P1.2)
NC
DVDD33
DGND33
AVSS2
AVDD4
AVSS4
XTAL1
XTAL2
AVSS6
AVSS3
AVDD6
AVDD3
AVDD7
AVDD18
AVSS7
REFTOP
VCMEXT
REFBOT
AVSS1
NC
AVDD1
IN+
IN-
AVDD8
AVSS8
NC
NC
ADVDD33
C827
47pF
C0603/SMD
C832 0.1uF
C0603/SMD
L806
220nH
L/IND/SMD/0805
R832
4.7K
R0603/SMD
C852
0.1uF
C0603/SMD
C850
0.1uF
C0603/SMD
C851
0.1uF
C0603/SMD
+
C847
10uF/50v
C10UF16V/D5H11
C856
0.1uF
C0603/SMD
X801
25MHz
CRYS/DIP/SMD
+
C855
10uF/50v
C10UF16V/D5H11
C826
10nF
C0603/SMD
C829
0.1uF
C0603/SMD
R829
4.7K
R0603/SMD
C840
0.1uF
C0603/SMD
C834
18pF
C0603/SMD
L809
R60/0603 300mA
BEAD/SMD/0603
C839
0.1uF
C0603/SMD
C842
0.1uF
C0603/SMD
C807
0.1uF
C0603/SMD
C854
0.1uF
C0603/SMD
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