Page 8
R15AAC/AAU (vs15)
3.5
Key & Panel interface (Circuit diagrams sheet 6of 7)
3.5.1 P306 connector
It is LVDS bus, it is from I307 scaler to LCD panel module. The output voltage is 3.3V.
3.5.2 P307 connector
The P307 has support keypad function. Control is give effect to for the push switch to be
used when the user changes the parameters, in order to modify the respective setting values.
Whether the switch has been pressed is identified with the switch input level that inputs a
DC voltage into I107 pin113 (LBADC_IN3) and pin114 (LBAD1_IN2).
Each switch input voltage based on Table 1.
Each parameter is stored in the I310 EEPROM, the contents of which are updated as
required.
The P307 have LED Blue and Amber light, the LED Blue signal from I307 pin 51, and the
LED Amber signal from I307 pin 56.
Table 1 Related ports of I311
P in N o . I/O
S ig n a l n a m e
F u n ctio n
R e m a r k s
Vo lta g e
P in 11 4
I
K E Y _ P O W E R
S o ft p o w er sw itc h
in p u t
P o w e r k e y
1 .0 5 V
L B A D C _
IN 2
P in 11 4
I
K E Y _ M E N U
E n te r O S D sw itc h
in p u t
E n te r O S D m en u 1 .6 9 V
P in 11 3
I
K E Y _ U P
sw itc h in p ut
U p k e y o r
S o u rce 2
2 .3 V
P in 11 3
I
K E Y _ D O W N
s w itc h in p ut
D o w n ke y o r
S o u rce 1
1 .9 V
L B A D C _
IN 3
P in 11 3
I
K E Y _ S E L E C T
S e le ctio n s w itc h
in p u t
S e lec t ke y o r
A u to a d just ke y
1 .5 7 V
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