3. TECHNICAL BRIEF
- 56 -
3.10 Microphone
The microphone is placed to the front cover and contacted to main PCB. The audio signal is passed to
AIN1P and AININ pins of AD6535. The voltage supply VMIC is output from AD6535, and is a biased
voltage for the AIN2P. The AIN2P and AIN2N signals are then A/D converted by the voiceband ADC
part of AD6535.The digitized speech (PCM 8KHz ,16KHz) is then passed to the DSP section of
AD6527B for processing (coding, interleaving etc).
3.11 Main Speaker
CLOSE TO MIC
EVL5M02200
VA204
VA203
EVL5M02200
1u
C221
C216
39p
R212
1K
1
2
MIC200
SOB-413S44-RC3310
R217
2.2K
C215
0
R215
39p
R214
100
39p
C218
39p
C214
C2
IN2
A2
NC1
C1
NC2
A1
NO1
C4
NO2
A4
V+
B4
NLAS4684FCT1
U202
COM1
C3
COM2
A3
GND
B1
IN1
2V5_VMIC
R216
100
R213
2.2K
39p
C219
10u
C213
C217
0.1u
MIC_PATH_SEL
MULTI_MIC_P
MULTI_MIC_N
VINNORP
VINNORN
Figure 3-28. Connection between Microphone and AD6535
C718
47p
R715
NA
C716
NA
C717
47p
R710
0
R716
0
H8
TXOUT
E8
SPOUT1L
B7
J8
SPOUT1R
SPOUT2L
B8
SPOUT2R
EQ3R
H6
EXC
G7
D7
EXTOUT
SPK_P
SPK_N
Z3X-BOX.COM
Содержание MG300d
Страница 1: ...Date January 2006 Issue 1 0 Service Manual Model MG300d Service Manual MG300d Z 3 X B O X C O M ...
Страница 23: ...3 TECHNICAL BRIEF 24 Figure 3 1 SKY74400 FUNCTIONAL BLOCK DIAGRAM Z 3 X B O X C O M ...
Страница 48: ...3 TECHNICAL BRIEF 49 3 7 CAMERA IC AIT813 U504 Figure 3 15 AIT813 APPLICATION BLOCKDIAGRAM Z 3 X B O X C O M ...
Страница 50: ...3 TECHNICAL BRIEF 51 3 8 MIDI IC YMU787 U703 Figure 3 24 YMU787 BLOCKDIAGRAM Z 3 X B O X C O M ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 2 TX Trouble SKY74400 FEM 13Mhz OSCILLATOR Test Points Z 3 X B O X C O M ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 6 LCD Trouble EMI FILTER CN600 Test Points Z 3 X B O X C O M ...
Страница 88: ...4 TROUBLE SHOOTING 89 Figure 1_Blue_RST Figure 2_DEBUG_Tx Rx Figure 3_PCM_SYNCS Tx Rx USCO Z 3 X B O X C O M ...
Страница 110: ...5 DOWNLOAD AND CALIBRATION 111 8 Push the START button Z 3 X B O X C O M ...
Страница 111: ...5 DOWNLOAD AND CALIBRATION 112 9 Phone test Finish is shown in below screen Z 3 X B O X C O M ...
Страница 112: ...6 BLOCK DIAGRAM 113 6 BLOCK DIAGRAM Z 3 X B O X C O M ...
Страница 113: ... 114 Z 3 X B O X C O M ...
Страница 124: ... 125 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 125: ... 126 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 133: ...10 STAND ALONE TEST 134 Figure 10 2 HW test setting Figure 10 3 Ramping profile Z 3 X B O X C O M ...
Страница 137: ... 138 Z 3 X B O X C O M ...
Страница 138: ... 139 Z 3 X B O X C O M ...
Страница 140: ... 141 12 EXPLODED VIEW REPLACEMENT PART LIST Z 3 X B O X C O M ...
Страница 141: ... 142 Z 3 X B O X C O M ...