Daewoo 2898ST, Service Manual

Page: 15 / 72

1 5
Pin Name Symbol Description
1 P3.1 SYS SECAM-L’ OUT for switching SAW filter L9461
- SECAM-L’ : H
- SECAM- L : L
2 P0.7/Open Drain BUSSTOP I2C BUS STOP IN for Computer controlled
alignment in Factory ( Active Low )
3 P0.6/Open Drain SDA Serial data IN/OUT for I2C
4 P0.5/Open Drain SCL Serial clock IN/OUT for I2C
5 P0.4/Open Drain OPTION #5 #6 Teletext
6 P0.3/Open Drain OPTION H H West Teletext
L H East Teletext
H L Turkish Teletext
7 P0.2/Open Drain OPTION #7 #8 #17 Tuning / Sound System
8 P0.1/Open Drain OPTION L H H B/G (2-G, NICAM)
H H H B/G, D/K (2-C, NICAM)
L L H I/I (NICAM)
H L H I (UHF only, NICAM)
H H L L/L’ B/G (2-C, NICAM)
L H L B/G L/L’ (2-C, NICAM)
9 P0.0/Open Drain LED LED drive OUT
- Stand-by mode : H
- Operating mode : L
( IR reception : pulse )
10 VSS VSS ground
11 VCC VCC Power Supply
12 XTAL1 OSCIN Input to inverting osc. Amplifier
13 XTAL2 OSCOUT Output of inverting osc. Amplifier
14 P4.0/ALE Not Used
15 RESET RST RESET IN (ACTIVE LOW)
16 P1.7/14BIT PWM VT TUNING VOLTAGE OUT
17 P1.6/14BIT PWM OPTION TUNING SYSTEM
18 P1.5/14BIT PWM F/SW F/SW IDENT IN for stopping OSD
display in RGB mode
- H : TV /AV mode
- L : RGB mode
19 P1.4/14BIT PWM OPTION ATS OPTION H : ON
L : OFF
20 P1.3/14BIT PWM MUTE AUDIO MUTE OUT
21 P1.2/14BIT PWM GND GND
22 P1.1/8BIT PWM Not Used
23 P1.0/8BIT PWM Not Used