- 46 -
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. BB Circuit Technical brief
rt\\\GGG
[Y
Copyright
གྷ
2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
snlGpG|Gv G
3.10 LCD back-light illumination
Figure 12 LCD Back light unit and Flash LED charge pump IC
The AAT3169 is a write-only single wire interface. It provides access to up to 32 registers that control
device functionality. In this system, two sets of pulse trains are transmitted via the SPIF pin. The first
pulse set is used to set the desired address. After the bus is held high for the address hold period, the
next pulse set is used to write the data value. After the data pulses are transmitted the bus is held high
again for the data hold period to signify the data write is complete. At this point the slave device
latches the data into the address that was selected by the first set of pulses. The protocol for using this
interface is described in the following subsection.
1u
C304
C305
1u
1u
C306
VBAT
R319
10K
1u
C318
U301
2
15
1
10
14
13
3
12
11
9
6
8
5
7
4
C1+
C2+
C1-
C2-
OUTCP
IN
D1
D2
EN_SET
D3
D4
GND
D5
PGND
D6
LCD_BL_CTRL
MLED
MLED2
MLED3
MLED1
MLED4
MLED5
MLED6
LCD Backlight
Содержание KM555
Страница 1: ...Service Manual Model KM555 Internal Use Only Service Manual KM555 Date November 2009 Issue 1 0 ...
Страница 115: ... 116 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 125: ... 126 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 133: ... 134 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...