Page 6-8
Single Function µPC Inputs/Outputs
There are, of course, µPC inputs and outputs that
serve specific purposes. The inputs are basically Sta-
tus Inputs, informing the µPC of the TV’s current
operating status. Table 6-1 lists these inputs and their
purpose.
PIN #
ABBREV
DESCRIPTION
95
VSYNC1
V pulse from V Pump output
5
VSYNC2
V pulse from V Pump output
6
TU2-SD
Sub Tuner Sync Detector
7
TU1-SD
Main Tuner Sync Detector
20
AC OFF
Informs when power is lost
46
SHORT
Senses Power Supply short
47
XRAY
Excess HV/Beam Current input
51
BLANK IN
High if deflection is lost
67
C ACK
Acknowledgement from the Convergence circuit
68
C BUSY
Busy signal from the Convergence circuit
75
VCHIP-PB
Indicates the sub picture program rating
89
IRIS
From Auto Iris circuit
92
AFT1
Main Tuner AFT voltage
93
AFT2
Sub Tuner AFT voltage
97
H SYNC
H Pulse from the Horizontal Output
100
CVIN
Video input for Closed Caption, V-Chip, Etc.
Table 6-1: µPC Specific Function Inputs
PIN 3
ABBREV
DESCRIPTION
3
AB2
Color Temperature Select
4
AB3
Color Temperature Select
21
OSD-BLNK
OSD Timing Signal
22
HALFTONE
Produces transparent gray background
32
R
R OSD signal
33
G
G OSD signal
34
B
B OSD signal
44
SUB CONT
High during Sub Contrast Adjustment
45
BLANK2
Blanks the picture
49
YUV-SW
Selects the YUV Signal Source
50
POW ER
Turns the TV ON
52
FREE RUN
Removes sync from VCJ during video mute
58
LED
Controls ON/OFF LED
69
C RST
Resets the Convergence circuit
70
C MUTE
Momentarily removes Convergence correction
72
C-E2RST
Unlocks the Convergence E2PROM
73
PIP SW
Selects POP signals
74
VCHIP RST
Resets Line 21 Decoder
79
3D RST
Resets 3DYC Comb Filter
80
MUTE3
Mutes sound from Audio Output IC
81
ANT B
Selects the Antenna B Input
85
YUV DLY
Sets the delay for the YUV signals
86
MUTE 2
Mutes sound from the AV Switch IC
88
SYST 1A
Enables the Active AV Network mode
Table 6-2: µPC Specific Function Outputs
The outputs used to perform specific functions, such
as TV On/Off, Sound Mute, Antenna Input selec-
tion, etc., are listed in Table 6-2.
Summary of Contents for VS-45605
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