LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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3.1.14 Optical Joystick
The Optical Joystick ¢‚ (OJ) is specially designed to support the graphic user interface (GUI) in
advanced mobile devices (cellular phone, PDA, PMP, DSC etc.). The principles of operation and
optical/mechanical structures are originally similar to the optical mice of PC, however, the design and
principles are modified so that Optical Joystick¢‚ will fit into extremely small space on mobile devices.
• Self-adjusting power-saving modes for longest battery life
• Smart Speed self-adjusting frame rate for optimum performance
• Internal oscillator - no clock input needed
• Wide operating voltage range: 2.6V ~ 3.6V nominal
• Six (6) wired serial port(3~5 wired serial port may be used optionally)
• Keyin4 and Keyout2 are used for “OK” key button.
10pin Optical Joystick Connector
AXK7L10227G (0.9T socket)
VDDG_2V75
ZD103
ESD9X5.0ST5G
INSTPAR
R118
100K
ESD9X5.0ST5G
ZD104
INSTPAR
INSTPAR
ESD9X5.0ST5G
ZD100
1
10
2
3
4
5
6
7
8
9
G1
G2
G3
G4
CN102
APP_GP05_OJ_MOSI_2V75
KEYIN4
APP_GP11_OJ_CS_n_2V75
APP_GP06_OJ_SCLK_2V75
APP_GP07_OJ_MOTION_n_2V75
APP_GP04_OJ_MISO_2V75
KEYOUT2
Figure 3-1-16. Optical Joystick
Z3X-BOX.COM
Содержание KT520
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