Parker TC1475, Service Manual

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Pin59 50HZ/60HZ switch
Pin59 NTSC(60HZ) PAL(50HZ)
voltage 5V 0V
Pin61 Mute 1K pull up resistance
Pin64 Power
a) RC, Pin61\64 wave:
Power
Mute
Power off
power off
Power on
Mute
Cold
power on
Switch
program
TC1475 / TC2175 / TF2139
13
Definition & Function of TMPA8873-XXXX Pins
Pin6, Pin7 less than 20PPM precision required for crystal
Duty cycle and Ripple voltage of power for Pin55 must less than 10 mV;
power for OSD clock)
Pin56 AV/TV switch
TV AV1/S/DVD AV2
Connect way
OPT.2=0 0V 0V 5V
Pull up resistance
connected to 5V
or 8V
OPT.2=1;OPT.5=0 0V 2.5V 5V
10K pull up
esistance connected
to 5V and 10K pull
down resistance
connected to GND
0V 5V 2.5V
10K pull up
resistance
connected to 5V
OPT.2=1;OPT.5=1