Emerson HKTV13 Service Manual page 31

Appendix
PIN Terminal
21 B
22 BL
23 P31 Audio Mute
24 P32 Power On
25 P70/INT0
26 P71/INT1 Relay On/Off
27 P72/INT2 A/V Detection
28 P73/INT3 Remocon In
29 P14/PWM1 RF(H)/AV(L)
30 P15/PWM2 AUTO TINT
31 P16/PWM3 PWM VOLUME
32 P17 BLUE BACK
33 P00
34 P01 MONO/STEREO
35 P02 CAPTION
36 P03 TV ONLY(H)
Port 00~03 : The Port characteristic is specified by the software and the use of pull-up resistors for each port is specified by the option SW.
Port 10~13 : The Port characteristic and the use of pull- up resistors for each port is specified by the software.
* The Port characteristic means I/O characteristic and Port description - CMOS or N-channel open drain needed pull-up resistors.
Teriminal I/O
Port 0 I
Port 1 I
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Name Explanation
B Blue output terminal of RGB image
Fast blanking control signal
BL
Switch TV image Signal and caption / OSD image signal
Output terminal
Use only read data of LA76814/10
Use when does power off/on
Power off: Output Low(DC 0V)
Power on: Output High(DC 5V)
Bus Stop
No Use
Relay On/Off Terminal
Detect port of Front A/V
Input of Remocon Signal
High: RF only mode
Low: RF/AV mode
Low (DC-0V) : On(Auto Tint)
High (DC-5V) : Off
Use only to control Sound of Stereo mode
High (DC-5V) : No Blue Back
Low (DC-0V) : Blue Back
Low (DC-0V) : Normal
PRISON
High (DC-5V) : Prison
Low (DC-0V) : Mono
High (DC-5V) : Stereo
No Use
Low (DC-0V) : TV/Video
High (DC-5V) : TV Only
Pull- up resistor status at selection pull-up option.
Pull- up resistor OFF, ON after reset release.
Programmable pull- resistor OFF.
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IC DESCRIPTION