3. TECHNICAL BRIEF
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3.4.1 Interconnection with external devices
A. RTC block interface
Countered by external X-TAL
The X-TAL oscillates 32.768KHz
B. LCD module interface
The LCD module is controlled by AD6527B(U102),DBB.
In operating mode, the AD6527B(U102) controls the LCD module through _LCD_CS,
LCD_DIM_CTRL, LCD_RESET, _WR, 2V8_VMEM, LCD_ID, LCD_BL_EN.
Signals
Description
_LCD_CS
MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
LCD_DIM_CTRL
It controls dimming mode of LCD module.(GPIO_23)
LCD_RESET
This pin resets LCD module. This signal comes from DBB directly.
(GPIO 15)
_WR
Enable writing to LCD Driver.
2V8_VMEM
2.8V voltage is supplied to LCD driver IC.
_SUB_CS
SUB LCD driver chip enable. SUB LCD driver IC has own CS pin
Table 3-2. LCD CONTRON SIGNALS DISCRIPTION
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Summary of Contents for MG300d
Page 23: ...3 TECHNICAL BRIEF 24 Figure 3 1 SKY74400 FUNCTIONAL BLOCK DIAGRAM Z 3 X B O X C O M ...
Page 83: ...4 TROUBLE SHOOTING 84 4 6 LCD Trouble EMI FILTER CN600 Test Points Z 3 X B O X C O M ...
Page 110: ...5 DOWNLOAD AND CALIBRATION 111 8 Push the START button Z 3 X B O X C O M ...
Page 111: ...5 DOWNLOAD AND CALIBRATION 112 9 Phone test Finish is shown in below screen Z 3 X B O X C O M ...
Page 112: ...6 BLOCK DIAGRAM 113 6 BLOCK DIAGRAM Z 3 X B O X C O M ...
Page 113: ... 114 Z 3 X B O X C O M ...
Page 124: ... 125 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 125: ... 126 MG300d 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 137: ... 138 Z 3 X B O X C O M ...
Page 138: ... 139 Z 3 X B O X C O M ...
Page 140: ... 141 12 EXPLODED VIEW REPLACEMENT PART LIST Z 3 X B O X C O M ...
Page 141: ... 142 Z 3 X B O X C O M ...