3. TECHNICAL BRIEF
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D. SIM interface
The AD6527 provides SIM Interface Module. The AD6527 checks status periodically during
established call mode whether SIM card is inserted or not, but it doesn't check during deep
Sleep mode. In order to communicate with SIM card, 3 signals SIM_DATA, SIM_CLK,
SIM_RST(GPIO_23) are required.
The descriptions about the signals are given by bellow Table 3-6 in detail.
Signals
Description
LCD_DATA
LCD_CLK
SIM_RST
(GPIO_23)
This pin receives and sends data to SIM card.
This model can support only 3.0 volt interface SIM card.
Clock 3.25MHz frequency.
Reset SIM block
Table 3-6 SIM CONTRON SIGNALS DISCRIPTION
Figure 3-9 SIM Interface of AD6527
1
2
3
7
8
4
5
6
10
9
SIM_DATA
2V85_VSIM
OND1
R336
20K
R337
R338
J300
VPP
IO
OND5
OND4
VCC
RST
CLK
OND2
OND3
2V85_VSIM
SIM_RST
SIM_CLK
C315
C314
NA
0
0
NA
220n
1000p
C316
C317
E. Key interface
Include 5 column, 5 row and additional GPIO 35 for KEY_ROW5.
The AD6527 detects whetherkey is pressed or not by using interrupt method.
F. AD6537B Interrupt
AD6537B provides an active-high interrupt output signal.
Interrupt signals are generated by the Auxiliary ADC, audio, and charger modules.
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 ...