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3.14 KEY BACLKLIGHT LED Interface
Key Backlight LED is controlled by KEYPAD_LED signal of MT625.
The built-in open drain output switch drives the Keypad LED in the handset. This switch is controlled by
baseband with the enable register. The keypad LED can sink 150mA and will become high impedance as
disabled.
VA404
DNI
KEYPAD_LED
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LD401
EDLH0013401
R407
R408
4.7
Figure 3.14.1 Key Backlight Block
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3. TECHNICAL BRIEF
VBAT
LD400
EDLH0013401
VA405
DNI
4.7
LGE Internal Use Only
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