LG TCH-M550 Service Manual page 19

2) PORT DESCRIPTION
Pin Name in Micom
1 P60/A16
2 P61/A17
3 P62/A18
4 P63/A19
5 P64/RD
6 P65/WR
7 P66/WAIT
8 P67/ASTB
9 VDD
10 P100/T15TO5
11 P101/T16/TO6
12 P102/T17/TO7
13 P103/T18/TO8
14 P30/TO0
15 P31/TO1
16 P32/TO2
17 P33/TI1
18 P34/TI2
19 P35/TI100
20 P36/T101
21 P37/EXA
22 TEST/VPP
23 P90
24 P91
25 P92
26 P93
27 P94
28 P95
29 P120/RTP0
30 P121/RTP1
31 P122/RTP2
32 P123/RTP3
33 P124/RTP4
34 P125/RTP5
35 P126/RTP6
36 P127/RTP7
37 VDD
38 X2
39 X1
40 VSS
41 XT2
42 XT1
43 /RESET
44 P00/INTP0
45 P01/INTP1
46 P02/INTP2/NMI
47 P03/INTP3
48 P04/INTP4
49 P05/INTP5
50 P06/INTP36
51 AVDD
52 AVREF0
53 P10/ANI0
54 P11/ANI1
55 P12/ANI2
56 P13/ANI3
57 P14/ANI4
58 P15/ANI5
59 P16/ANI6
60 P17/ANI7
Name in Model Enable I/O I/O setted Output Format Descripation
PCD_PWR I/O
PTUN_PWR I/O
PPWR I/O
PTEL_MUTE I/O
PREMOTE I/O
PLIGHT I/O
N.C. I/O
PSTANDBY I/O
VDD -
PEV_CLK I/O
PEV_DO I/O
N.C. I/O
PCDC_PWER I/O
PCD_REV I/O
PLMT_ISW I/O
PCD_SW1 I/O
PCD_SW2 I/O
PCD_SW4 I/O
PCD_FWD I/O
N.C I/O
N.C I/O
TEST -
N.C I/O
PPWR_MUTE I/O
N.C I/O
PAF_MUTE I/O
PCD_IDO I/O
N.C I/O
PDRV_OPS I/O
PDRV_OMUTE I/O
N.C I/O
PDSP_IDRF I/O
PDSP_ORST I/O
PCD_OCEN I/O
N.C I/O
N.C I/O
VDD -
X2 -
X1 I
GND -
XT2 -
XT1 I
RESET I
PRDS_CLK I/O
PCD_IWRQ I/O
PCDCDI I/O
PRMC I/O
N.C I/O
N.C I/O
N.C I/O
AVDD -
AVREF0 -
N.C I
PS_MTR I
PLVL_MTR I
PKEY1 I
PKEY2 I
PVOLA I
PVOLB I
N.C -
- 2-14 -
O CMOS DSP power suppler ON output
O CMOS Tuner power supplier ON output
O CMOS System power supplier ON output
I - Telephone mute input
O CMOS External power amplifier enable output
O CMOS LCD backlight ON output
O CMOS Not to be used (Open)
O CMOS To power amp, "STADN-BY" command output
- - Positive power supply
O CMOS Clock for interface with volume controller
O CMOS To volume controller, data output
O CMOS Not to be used (Open)
O CMOS CD changer power supplier ON output
O CMOS In MD, load motor "reverse" command output
I - In MD, limit switch state input
I - In MD, SW1 state input
I - In MD, SW2 state input
I - In MD, SW4 state input
O CMOS In MD, load motor "forward" command output
O CMOS Not to be used (Open)
O CMOS Not to be used (Open)
- - pull down (470Ω ~ 10kΩ)
O N-ch Not to be used (Open)
O N-ch To power amp, "Mute" command output
O N-ch Not to be used (Open)
O N-ch To tuner pack, AF mute output
O N-ch To CD changer, data output
O N-ch Not to be used (Open)
O CMOS In MD, motor driver's power save command output
O CMOS In MD, all motor's output "cut off" command output
O CMOS Not to be used (Open)
I - Focusing OK signal input
O CMOS DSP reser output
O CMOS DSP chip enable output
O CMOS Not to be used (Open)
O CMOS Not to be used (Open)
- - Positive power supply (+5V)
- - X'tal 9.8304MHz
- - X'tal 9.8304MHz
- - Ground
- - Sub clock 32.768kHz
- - Sub clock 32.768kHz
- - System reser input
I - From tuner pack, RDS clock input
I - Sub-Q read standard level signal input
I - From CD changer, data input
I - Remote controller's signal input (interrupt3)
O CMOS Not to be used (Open)
O CMOS Not to be used (Open)
O CMOS Not to be used (Open)
- - Positive power supply to A/D converter
- - Reference voltage applied to A/D converter
I - Not to be used (Open)
I - Radio station's strength signl input
I - Sound level's signal input
I - Key # 1 line input
I - Key # 2 line input
I - Encoder volume terminal #A input
I - Encoder volume terminal #B input
- - Not to be used (Open)