4.2 BT Trouble
4. TROUBLE SHOOTING
- 86 -
TEST POINT
CIRCUIT DIAGRAM
DUBUG_TX
R326
DUBUG_RX
R323
BT_RST
C305
BT_EN
R311
M300
Figure 4-22.
Figure 4-23.
BLUETOOTH
(GPIO_8)
(GPO_18)
(GPIO_2)
C3
COM1
A3
COM2
B1
GND
C2
IN1
A2
IN2
NC1
C1
A1
NC2
C4
NO1
A4
NO2
B4
V+
U302
MAX4717EBC-T
10K
R333
2V8_VMEM
C317
0.1u
47
R330
1
3
4
5
VCC
TC7SH08FS
U301
GND
2
NA
R313
R327
47
47
R329
2V8_VBT
BGND
6
2
GND
NC
5
1
STBY
3
VIN
VOUT
4
BH28FB1WHFV
U300
NA
R312
0.1u
C304
15p
C308
C306
2.2u
0
R308
R331
47
ANT300
FEED
NC1
NC2
R326
47
2.2u
C300
330
R311
0.1u
C303
2V8_VBT
VBAT
2V8_VBT
R323
C302
47
4.7u
PIO5
16
RESETB
13
SPI_CLK
14
SPI_CSB
SPI_MISO
15
12
SPI_MOSI
26
UART_CTS
UART_RTS
23
24
UART_RX
UART_TX
27
22
VDD_1_8V
VDD_DIG
21
VDD_VREGIN
3
ANT
5
4
GND1
6
GND2
GND3
11
GND4
25
28
NC
20
PCM_CLK
19
PCM_IN
PCM_OUT
17
18
PCM_SYNC
PIO0
1
2
PIO1
PIO2
7
8
PIO3
PIO4
9
10
LBMA-2C67B2
M300
15p
C301
C305
NA
R342
0
2.2u
C307
PCM_TX
PCM_SYNC8
USC3
USC_2
USC_1
PCM_EN
USC0
PCM_TX
PCM_SYNC8
BT_RST
PCM_RX
DEBUG_RX
DEBUG_TX
BT_EN
USC2
USC1
PCM_TX
PCM_RX
Содержание KG920
Страница 3: ... 4 ...
Страница 48: ...3 TECHNICAL BRIEF 49 3 8 2 AFE Analog Front End Figure 3 22 ...
Страница 52: ...3 TECHNICAL BRIEF 53 3 8 5 MBGM01 5M CCD ISP Figure 3 25 ...
Страница 55: ...3 TECHNICAL BRIEF 56 3 8 6 MV8620 5M back end IC Multi Media Function Figure 3 26 ...
Страница 58: ...3 TECHNICAL BRIEF 59 3 9 MIDI IC YMU787 Figure 3 27 YMU787 BLOCKDIAGRAM ...
Страница 87: ...4 TROUBLE SHOOTING 88 Graph 4 8 BLUE RST Graph 4 9 DEBUG_TX RX Graph 4 10 PCM_SYNCS TX RX USC0 ...
Страница 96: ...4 TROUBLE SHOOTING 97 4 7 KEY backlight Trouble TEST POINT Q101 R122 Q101 LD101 LD119 Figure 4 38 Figure 4 39 ...
Страница 108: ...4 TROUBLE SHOOTING 109 CIRCUIT WAVEFORM Figure 4 59 Graph 4 11 Figure 4 60 Figure ...
Страница 109: ...4 TROUBLE SHOOTING 110 TEST POINT U602 FB602 U100 Q100 Q101 C113 C114 Figure 4 61 Figure 4 62 ...
Страница 111: ...Figure 4 65 Graph 4 12 4 TROUBLE SHOOTING 112 C102 C113 U101 Figure 4 66 C137 U103 TEST POINT WAVEFORM ...
Страница 112: ...4 TROUBLE SHOOTING 113 Figure 4 67 Figure 4 68 CIRCUIT ...
Страница 115: ...4 TROUBLE SHOOTING 116 WAVEFORM Graph 4 13 ...
Страница 139: ...6 BLOCK DIAGRAM 140 6 BLOCK DIAGRAM Figure 6 1 ...
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