Philips 26MD257B/37 Service Manual page 126

24 TPM1.0U LA
Scaler Board Schematic Diagram-ASIC
1 2
A
R250
IF_AGC MT5112_IF_AGC
C251 1K1 1/10W
47N 16V
CLOSE TO MT5112
FAT_IN- C252 10N 50V
B
L250 C253
NC/0.22uH NC/47P 50V
FAT_IN+ C254 10N 50V
C255 100N 16V
C256 100N 16V
C257
C258 100N 16V 10U 25V
FB251
1 2
DVDD18
600R/200mA BLM18AG601SN1D
C
X250 C260
R262 18P 50V
25MHz 1M 1/10W
C261
18P 50V
D
TP252
DV18_DM
FB254 220R/2000mA DVDD18
E
1 2
C264
10U 25V
DV33
TP253
FB250
DVDD33
1 2
600R/200mA BLM18AG601SN1D
C274
10U 25V
F DV33
TP254
FB257
AVDD33
1 2
600R/200mA BLM18AG601SN1D
C281
10U 25V
G
H
1 2
3 4
DVDD33
76
ADVDD33_1
ADVDD33
77
NC
78
NC
79
AVSS8
80
AVDD33
AVDD8
81
IN-
82
IN+
AVDD33 83
AVDD1
84
NC
85
AVSS1
REFBOT 86
REFBOT
VCMEXT
87
VCMEXT
88
REFTOP
REFTOP
89
AVSS7
90
AVDD18
91
AVDD33
AVDD7
AVDD3 92
AVDD3
C259
AVDD33 93
AVDD6
100N 16V
94
AVSS3
95
AVSS6
XTAL2 96
XTAL2
XTAL1
97
XTAL1
98
AVSS4
AVDD33 99
AVDD4
100
AVSS2
DVDD18
C265 C266 C267 C268 C269 C270
100N 16V 100N 16V
C271 100N 16V 100N 16V 100N 16V
100N 16V
100N 16V
Digital 1.8V Bypass Caps
DVDD33
C275 C276 C277 C278 C279
100N 16V
C280 100N 16V 100N 16V 100N 16V 100N 16V
100N 16V
Digital 3.3V Bypass Caps
AVDD33
C282 C283 C284 C285 C250
100N 16V 100N 16V 100N 16V 100N 16V 100N 16V
C286
100N 16V
Analog 3.3V Bypass Caps
3 4
7. Circuit Diagrams and PWB Layouts
5 6 7
S-04
DV33 GPIO_0(MT5112 RESET):
U250
Normal: High
TP250 Active: Low
R253
50
NC
49
GPIO1
48 GPIO_0
RESET_
47 SIF_SCL
HOST_CLK
46
DGND18
45
DVDD18
DVDD18
SIF_SDA
44
HOST_DATA
43
DGND33
TP251
42
DVDD33
DVDD33
41
DGND18
40
DVDD18
DVDD18
33R 1/10W R254 GPIO_18
39
TS_ERR
33R 1/10W R255 TS0VALID
38
TS_VAL
33R 1/10W R256 TS0CLK
37
TS_CLK
36
DGND33
35
DVDD33
DVDD33
33R 1/10W R257 TS0SYNC
34
TS_SYNC
33R 1/10W R258 TS0DATA0
33
TS_DATA0
33R 1/10W R259 TS0DATA1
32
TS_DATA1
31
DGND18
30
DVDD18
DVDD18
33R 1/10W R260 TS0DATA2
29
TS_DATA2
33R 1/10W R261 TS0DATA3
28
TS_DATA3
27
DGND33
26 DVDD33
DVDD33
MT5112BD
TP255
FB252 FB253
AVDD33 AVDD3 AVDD33
1 2 1
600R/200mA BLM18AG601SN1D C262 600R/200mA BLM18AG601SN1D
100N 16V
TP256
FB255 FB256
AVDD33 AVDD5 AVDD33
1 2 1
600R/200mA BLM18AG601SN1D C272 600R/200mA BLM18AG601SN1D
100N 16V
5 6 7
8 9
DV18_DM
1 DV18_DM
DV33
2,3,5,6,7,11,13,14,16 DV33
GND
GND
1,2,3,5,6,7,8,9,10,11,12,13,14,15,16,17
GLOBAL SIGNAL
IF_AGC
3 IF_AGC
FAT_IN+
3 FAT_IN+
FAT_IN-
3 FAT_IN-
TUNER_SCL
3 TUNER_SCL
TUNER_SDA
3 TUNER_SDA
TUNER INTERFACE
TS0DATA[0..7]
5 TS0DATA[0..7]
TS0SYNC
5 TS0SYNC
TS0VALID
5 TS0VALID
TS0CLK
5 TS0CLK
GPIO_18
5 GPIO_18
TS INPUT
SIF_SDA
7,14 SIF_SDA
SIF_SCL
7,14 SIF_SCL
GPIO_0
5 GPIO_0
C250 F4 C251 A2
C252 B1 C253 B2
C254 B1 C255 B2
C256 B2 C257 C2
C258 C2 C259 C3
C260 C2 C261 C2
C262 E6 C263 E8
C264 E2 C265 E3
C266 E3 C267 E4
C268 E4 C269 E4
C270 E5 C271 E2
C272 F6 C273 F8
C274 F2 C275 F3
C276 F3 C277 F4
C278 F4 C279 F4
C280 F2 C281 F2
C282 F3 C283 F3
C284 F4 C285 F4
C286 F2 FB250 F1
FB251 C2 FB252 E6
FB253 E7 FB254 E1
FB255 F6 FB256 F7
TP257
FB257 F1 L250 B2
R250 A2 R251 A4
ADVDD33_1
R252 A4 R253 B6
R254 B7 R255 C7
2
C263 R256 C7 R257 C7
100N 16V R258 C7 R259 C7
R260 C7 R261 C7
R262 C2 R263 D5
TP258 R264 D5 R265 D5
ADVDD33_2 R266 D5 TP250 B6
TP251 B7 TP252 E2
2 TP253 E2 TP254 F2
C273
TP255 E6 TP256 F6
100N 16V
TP257 E8 TP258 F8
U250 B3 X250 C2
8 9
10 11
A
B
C
D
E
F
G
H
10 11