OSD controller
WiseView(TM)
LTS5QTB
0142
PQFP44


pin
25	SCL
26	SDA
37	volume buttons
38	brightness (backlight) buttons
39  5V from A/V connector (for detection)


       -         +         -
       |         |         |
       _\     ---*---      _\
    B- |      |     |      | V-
      5K6    2K2   2K2    5K6
       |      |     |      |
       *------*     *------*
    B+ |      |     |      | V+
       _\    1K5   1K5     _\
       |      |     |      |
       -     P38   P37     -

nothing pressed 1.0
V+/B+ pressed   0.0
V-/B- pressed   >0.0 <1.0


There are hidden menu's... but I don't know how to make them show in a normal way... yet.


eeprom contents

about every possible setting is stored in the eeprom

offset							range
5				volume			00..3F
6				backlight		00..3F

I'm not sure if it's worthwile to find all settings, since I might find out how to call the hidden menu's.


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other datasheets:
	http://www.national.com/ds/LM/LM1881.pdf