Only For Training And Service Purposes - LG KF510C Service Manual

3.18.2 Touch LED Operation
Cypress CY8C29666 chip is used for LED Controller on KF510.
This is also communicated with I2C to BB(S-Gold3) If S-Gold3 detects touch operation from Touch IC,
S-Gold3 sends command to LED Controller into I2C according to proper scenario. .
LED Controller Communication(I2C) Interface Configuration and is as follow :
- VCC : 3.3V
- SDA : Data
- SCL : Clock (up to 400kHz)
- GND : Ground
Also total 27 LEDs is composed on KF510.
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Only for training and service purposes

C620 C621
2.2u 2.2u
LED(7)
LED(8)
1
LED(0) P0_1
2
LED(1) P2_7
3
LED(2) P2_5
4
LED(3) P2_3
5
LED(4) P2_1
6
LED(5) P3_3
7
LED(6) P3_1
8
SCL P1_7
Figure 28 Touch LED control
3. TECHNICAL BRIEF
3V3_LED
FB600
C600
2.2u
24
P0_0 LED(19)
23
P2_6 LED(18)
22
U601 P2_4 LED(17)
21
CY8C21434 P2_2 LED(16)
20
P2_0 LED(15)
19
P3_2 LED(14)
18
P3_0 LED(13)
17
XREX
DNI
R639 1K
R640 1K
- 59 -
TCH_RESET
R600
I2C_CLK_LED
I2C_SDA_LED
LGE Internal Use Only