A
WMA 5250 Module &USB2.0 HOST
TO AMP BOARD
interface
SOT-323
Mini current 200mA
Mini current 600mA
AGND
no ECO stanby selection
OR
new added
changed R94 from 1K to 0R
Mini current 500mA
1.
2.
3.
4. changed C84 form 100p to 2.2uF
5.
Change lists
6. changed C78 from 1uF to 2.2uF
7. changed R16 from 1k to 4k7
8. R116 from 15k to 680R for NTC
9. changed R121 form 15k to open for spe
ak_level
add R19 to 10K for stereo_detection
11.changed R20 from open to 100R
date: 19-10-2006
add R034 to 22R
10. add R035 to 100K
12.add R036 to 10K to GND
added R34 1K in 6MHz crystal input pin
13.added R35 OR to Power On
14.change R59 from 4K7 to
470R
15.increase USB input voltage form 5V to 5.5V
16.use Q6 BC807 instead of Q2 for cost down
AMP_Mute
RDS_CLK
TUNER_RW
RDS_DATA
TUNER_CLK
TUNER_ST_MO
TUNER_DATA
RELAY_CTRL
NTC_DET
SPK_LEVEL
SDA1
SCL1
MUX_R
MUX_L
POWER_ON
MAIN_VCC
3V3
3V3
5V
MAIN_VCC
USB_IN_5V
ECO_3V3
ECO_3V3
ECO_3V3
5V
C72 100uF/16V
C75 100uF/16V
R94 0R
T84
L10 1A
C87 100pF
T66
C86 100pF
R101 220R
R91 1K
R103 100K
T75
R87 1K
T89
R93 1K
C93 100pF
R19 10K
C90 100pF
T67
T62
L12 1A
R100 100R
C89 100pF
R89 1K
R95 1K
T88
C66 220uF/16V
C80 100pF
R99 470R
C79 0.1uF
T68
C65 220uF/10V
T81
T93
R52 10K
C67 0.1uF
C83 100pF
C77 1uF
J1
CON25/Pitch1.27
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
C84 2.2uF
C92 100pF
T87
T63
D2 PMEG2010EA or 0R
C68 0.1uF
L11 1A
R104 1K
R90 1K
R92 1K
C76 0.1uF
T69
C81 100pF
C73 0.1uF
T92
D3 PDZ3.9B
R105 10K
C78 2.2uF
C64 0.1uF
T86
R035 100K
Q4 2SD1664R
1
23
T64
R102 1K
R97 1K
R88 1K
C74 1uF
T85
T91
C82 100pF
C88 100pF
T82
T73
T83
T65
C71 1uF
R98 1K
R106 100K
C91 100pF
T74
C85 100pF
T76
T90
R034
22R
CIRCUIT DIAGRAM - CPU/WMA BOARD
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