JAMO DVR 50 Service Manual page 40

A
1
DSP3
TUN_Ok
1
TUN_ST To DSP
2
Interface 1
3
4
TUN_OUTL
5
DSP1_PIN2
6
TUN_OUTR
TUN_CE
7
TUN_DATAIN
8
TUN_CLK
9
TUN_DATAOUT
10
11
TUN_RDSCLK
12
TUN_RDSDATA
13
FPC-ZIP-13
2
Tuner Interface
VCC3V3
1
PIO_4
A3
14
VDD
2 3
B3 O3
7
GND
U51A
74LCX125
TUN_ST
VCC5V VCC5V
3
D33
L98
3
BEAD
Dual C241
100pF
Status Interface
TUN_RDSCLK VCC5V
VCC5V
D34
4
L99
3
BEAD
Dual C243
100pF
TUN_RDSDATA
VCC5V
VCC5V
D37
L102
3
BEAD
Dual C249
100pF
RDS
Interface
5
B
R340 Vcc12V
4R7
2 3
Q30
2N3904 R357
680
R339
4R7
C237
2 3
0.1uF
Q31
2N3904
C238 C257 R358
+ +
47uF/16V 47uF/16V
10K
R326
4K7
R205
4K7
4
A3
14
VDD
5 6
B3 O3 PIO_8
7
GND
C242
100pF
U51B
74LCX125
Vcc3V3
R330
4K7
1 13
A3 A3
14 14
VDD VDD
2 3 12 11
PIO_11
B3 O3 B3 O3
7 7
GND GND
C244
100pF
U47A U51C
74LCX125 74LCX125
74LCX125
R331
4K7
13 10
R600
A3 A3
14 14
VDD VDD
12 11 9 8
B3 O3 B3 O3
7 7
GND GND
C250
1K
100pF
U47C U51D
74LCX125
C D
VCC3V3
VCC5V VCC5V
C304
0.1uF
R207
U49B
D36
1K
14
L101
VDD
TUN_CE
3 6
BEAD O3
7
GND
Dual C247
100pF
C248 74LCX125
100pF
VCC5V VCC5V
R208
U49D
D39
1K
L104
14
VDD
TUN_DATAIN
3 8
BEAD
O3
7
GND
Dual C253 C254
100pF 100pF
74LCX125
VCC5V
VCC5V
VCC3V3
R206
D35
1K
14
Dual
L100 VDD
TUN_CLK
3 3
BEAD
O3
7
GND
C245
100pF
C246 74LCX125
100pF
VCC5V
VCC5V
R328
1K
D38
10
L103
TUN_DATAOUT
3 9
BEAD
Dual C251 C252
100pF 100pF
VCC5V
U47B
4
A3
14
VDD
6 5
PIO_0
O3 B3
7
GND
74LCX125
PIO_10
Schematic diagram - MPEG board 15/16
E
PIO4 = Lo -> Tuner Control
74LCX125
PIO4 = Hi -> Read RDS & ST
VCC3V3
U50A
1
PIO_4
A3
14
VDD
3 2
PIO_2
O3 B3
4 7
A3 GND
5
B3
R324
10K
74LCX125
VCC3V3
U50B
4
A3 PIO_4
14
VDD
10 6 5
A3 O3 B3 PIO_10
7
GND
9
B3
R325
10K
74LCX125
VCC3V3
U50C
13
PIO_4
A3
U49A
14
VDD
1 11 12
PIO_11
A3 O3 B3
7
GND
2
B3
R327
10K
PIO_4
U47D U50D
10
A3 A3
14 14
VDD VDD
8 9 8
B3 O3 B3 O3 PIO_8
7 7
GND GND
74LCX125 74LCX125
TUN_Ok
VCC5V
R204
D32
10K
Dual
L97
3 Sigma Designs
DVD Receiver - EM
355 FairView Way
BEAD C239
Milpitas CA 95035
C240
100pF
Reference
100pF
designs
Title
Components having special characteristics or critical for safety are FM Tuner Interface
Size identifi ed by Document Number mark and must be replaced with components
B
23-000703-01
specifi ed by the manufacturer.
Date: Tuesday, July 15, 2003
Schematic diagram is subject to change without notice.
F
CONF
Sheet 15
40