3. TECHNICAL BRIEF
- 35 -
The backlight of LCD module is controlled by DBB via AAT2806IXN-4.5-T1 , U402. The control signals
related to Backlight LED are given bellow.
C. RF interface
The AD6527B control RF parts through PA_BAND, ANT_SW1, ANT_SW2, ANT_SW3 , CLKON ,
PA_EN, S_EN, S_DATA, S_CLK, RF_PWR_DWN.
Signals
Description
LCD_DIM_CTL
Control LCD backlight level in 16 steps
(GPO 5)
LCD_LED_CTL
Control LCD LED
LCD_DIM_CTRL
Control LCD BACK LIGHT
_SUB_CS
SUB LCD driver chip enable. SUB LCD driver IC has own CS pin
LCD_RESET
Control LCD RESET
Table 3-3. DESCRIPTION OF LCD BACKLIGHT LED CONTROL
Signals
Description
PA_BAND (GPO 17)
PAM Band Select
ANT_SW1 (GPO 9)
Antenna switch Band Select
ANT_SW2 (GPO 10)
Antenna switch Band Select
ANT_SW3 (GPO 11)
Antenna switch Band Select
CLKON
RF LDO Enable/Disable
PA_EN (GPO 16)
PAM Enable/Disable
S_EN (GPO 19)
PLL Enable/Disable
S_DATA (GPO 20)
Serial Data to PLL
S_CLK (GPO 21)
Clock to PLL
RF_PWR_DWN(GPO 4)
Power down Input
Table 3-4. RF CONTRON SIGNALS DISCRIPTION
Z3X-BOX.COM
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 ...