CPU Schematic Diagram
34
104S LCD
3344
4K7/ARV241
1
8
2
7
3
6
4
5
IICSDA
+5V
2366 1N/0805
80mil
+18V
HS-380
AUDIO_PWR_CTL
3362
100R/ARV241
1
8
2
7
3
6
4
5
5374 BLM21B221SB
3347 4K7/ARV241
1
8
2
7
3
6
4
5
NI
ADPWRDWN
6341
BAS32L
VS-380
O«×C 30K
3306
1K/0805
THERMO
5373 BLM21B221SB
IICSDA
NI
1
KEY
2345
22P/0805
1
2
1
2383 100N/0805
5369 BLM21B221SB
NI
+5V
HS-380
CP-380
1302
LEOCO-2011P04H
1
2
3
4
20mil
NI
3305
1K/0805
1
3304
100R/0805
3301
100R/0805
THERMO
1341
12MHz
2362
15P/0805
1
2
7362
ST24C16/DIP
1
2
3
4
5
6
7
8
PRE
E1
E2
VSS
SDA
SCL
/WC
VCC
3349 0R/0805
1
2
FRC_CTL
5367
TI3211611G800
NI
+5V
3313
15K/0805
1
2
3338
4K7/0805
1
1301
LEOCO-2011P07H
1
2
3
4
5
6
7
BACKLIGHT_CTL
2342
1U/0805
1
2
GMZ2/OSD_RST
LED_G
3315
DTC-103
1
2
NI
+5V
NI
2372 1N/0805
5370 BLM21B221SB
NI
+5V
+5V
EEPROM_WP
+5V
3314
C620/10K/0805
NI
1
2
+5V
NI
LED_G
3369
220R/0805
+5V
VS-380
1
HS_IN
CSYNC
3302
10K/0805
DDCSCL
VOLUME
VOLUME
routed by side of DC power for EMI isolation,
CP-380
1.trace from 7301 to 1301,
3361
2K2/ARV241
1
8
2
7
3
6
4
5
EEPR
OM
_W
P
1
EEPROM_WP
AUDI
O
_P
W
R_
CTL
/DOE
2381 100N/0805
2344
22P/0805
1
2
CPU
0316A
POTOMAC-2.SCH
Custom
2
6
Thursday, March 16, 2000
Size
Document Number
Rev
Date:
Sheet
of
+5V
+5V
+
2343
10U/16V/RV2
7301
87C380
1
2
3
4
5
6
7
8
9
10
13
14
15
16
17
18
19
20
21
11
12
25
24
23
22
26
27
28
29
30
31
33
34
35
36
37
38
39
40
41
42
32
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
XTAL1
XTAL2
HIN
HOUT
CSYNC
VIN
VOUT
P0.7
P0.6
P0.5
P0.4
VDD
VSS
P0.0
P0.1
P0.2
P0.3
RESET
DAC0
DAC1
DAC2
DAC3
VSS
P3.2
P3.3
/INT1
SDA1/P1.3
SCL1/P1.2
SDA/P1.1
SCL/P1.0
PWM10/P1.7
PWM9/PAOUT/P3.1
PWM8/CLAMP/P3.0
VDD
80mil
NI
IICSCL
SCLK
SDI
LED_R
2380 1N/0805
+5V
AUDIO_PWR
3366
4K7/0805
2363
100N/0805
1
2
3365
100R/0805
2379 100N/0805
3367
4K7/ARV241
1
8
2
7
3
6
4
5
20mil
1
BRIGHT_CTL
3364 100R/0805
3368
220R/0805
1
1
2361
1U/0805
1
2
+5V_PWR_CTL
3303
100R/0805
NI
HS
3370
100R
2313
100N/0805
1
2
2375 100N/0805
2374 1N/0805
NI
5372 BLM21B221SB
IICSCL
5366 TI3211611G800
2367 100N/0805
NI
PANEL_PWR_CTL
AUDIO_PWR_CTL
2378 1N/0805
SDO
5361
BEAD/1206
1
2
1
2382 1N/0805
3341
10K/0805
1
2
LED_R
18V_ON
+5V
FRC_CTL
3363
4K7/0805
NI
VS_IN
DDCSDA
/SCS
2369 100N/0805
NI
SELF-TEST
2368 1N/0805
2373 100N/0805
3339
4K7/0805
3346 100R/0805
1
2
1
VS
HS_IN
NI
KEY
20mil
20mil
VS_IN
2255
100P/0805
5342
BEAD/1206
1
2
NI
5
4
2
3
1
0.5v
2.2v
2.4v
2.9v
3.9
2.1v
4.9v
0.2 V/div AC
5 uS/div
0.1 V/div AC
5 uS/div
0.2 V/div AC
5 uS/div
0.2 V/div AC
50nS/div
0.2 V/div AC
5 mS/div
1 7301-13
2 7301-15
3 7301-16
4 7301-9
5 7301-42
9
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