3. TECHNICAL BRIEF
- 32 -
Figure 3-15 AD6537B AUDIO SECTION
GPI
CSFS
CSDI
CSDO
ASFS
ASDI
ASDO
AD6537B
Control
Ring Tone
Volume Controller
Serial
Port
Audio
Serial
Port
Filter/
SRC
Filter/
SRC
DAC
ADC
Analog Adder
PGA
PGA
Gain
Pre-Amp
Microphone Interface
Analog
Switch
AIN3P
AIN3N
8
32
32
SPWR
AOUT2P
AOUT2N
AOUT1N
AOUT3P
AOUT3N
AOUT1P
SGND
AIN1P
AIN1N
AIN2P
AIN2N
PGA
Analog
Switch
3.6.4 Audio Section
1. Receive audio signal from microphone. B2070 uses differential configuration.
2. Send audio signal to speaker. B2070 uses differential configuration.
3. This section provides an audio codec with a digital-to-analog converter and an
an alog-to-digital converter, a ring tone volume controller, a microphone interface, and multiple
analog input and output channels.
4. It interconnects with external devices like main microphone, main receiver, and headset.
The descriptions of audio port used in B2070 are given bellow in detail.
<Up Link>
- AIN1P, AIN1N : Main microphone positive/negative terminal
- AIN2P, AIN2N : Headset microphone positive/negative terminal
- AIN3P, AIN3N : External Analog Input terminal
<Down Link>
- AOUT1P, AOUT1N : Main Speaker positive/negative terminal
- AOUT3P : Headset speaker terminal
Содержание B2070
Страница 54: ... 53 4 TROUBLE SHOOTING 4 2 TX Trouble TEST POINT 13Mhz OSCILLATOR Mobile SW FEM TRANCEIVER LDO PAM ...
Страница 68: ... 67 4 TROUBLE SHOOTING TEST POINT 4 6 LCD Trouble ...
Страница 72: ... 71 4 TROUBLE SHOOTING TEST POINT 4 8 Speaker Trouble ...
Страница 79: ... 78 4 TROUBLE SHOOTING 4 11 KEY backlight Trouble TEST POINT ...
Страница 96: ...6 Press Start and Pover on the phone using JIG remote Power on Switch 1 5 DOWNLOAD AND CALIBRATION 95 ...
Страница 107: ... 106 8 PCB LAYOUT Figure 8 1 B2070 BOTTOM SIDE PCB LAYOUT ...
Страница 108: ... 107 8 PCB LAYOUT Figure 8 1 B2070 TOP SIDE PCB LAYOUT ...
Страница 109: ... 108 ...
Страница 117: ...10 STAND ALONE TEST 116 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 121: ... 120 ...
Страница 123: ... 122 ...