11
PIN
NAME/(ABBREV)
FUNCTION
REMARK
14
Vdd
+5V
15
KEY SCAN OUT 1
· KEY MATRIX COLUMN 1
& CLOCK
· TUNER CLOCK & EEPROM CLOCK
(R23)
16
KEY SCAN OUT 2
· KEY MATRIX COLUMN 2
& DATA
· TUNER DATA & EEPROM DATA
(R22)
17
ENABLE
· TUNER ENABLE
CMOS
(R20/PCL)
PUSH PULL
18
AFC
· AFC voltage from MAIN IC(LA7688) : DC 0 ~Vdd
A/D CONV
(R21/AFC IN)
CENTER : 2.5V
4BIT
19
OSC in
· OSD CLOCK
20
OSC out
21
/H-Sync
· SYNC. signal for OSD H. position.
(HD)
· 0~5V PULSE/Active LOW INPUT
22
/V-Sync
· SYNC. signal for OSD V. position.
(VD)
· 0~5V PULSE/Active LOW INPUT
23
R(R60/OSD R)
· Active “HIGH” OUTPUT
24
G(R61/OSD G)
· Dot pattern OF OSD
25
B(OSD B)
26
OSD Ys
27
50/60 IN
· 3-SYSTEM SWITCHING
CMOS
(R13)
· 50Hz: LOW(PAL-N) , 60Hz: HIGH (PAL-M, NTSC-M)
28
/C.IDENT IN
· 3-SYSTEM SWITCHING
CMOS
(R12)
· “LOW” (INPUT) signal detected with NO-COLOR.
29
OCP IN
· OVER CURRENT PROTECTION INPUT: active HIGH
CMOS
(R11)
· TV POWER turns OFF when HIGH signal detected for
10ms.
· The u-COM observe this pin immediately after
POWER ON.
30
SCREEN OUT
· HIGH signal OUTPUT indicating SCREEN adjustment.
CMOS
(R10)
· Goes HIGH when REMOCON KEY;9DH detected.
· Toggled when 9DH detected.
31
VIDEO MUTE OUT
· Active LOW, Normal : HIGH
CMOS
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