LG TCH-M900, Service Manual

Page: 19 / 36

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Pin I/O
26
I
27
O
28 O
29 O
30 O
31
I
32
O
33 O
34 O
35 I
36 O
37 O
38 O
39 I
40 O
41 I
42 O
43 O
44 -
45 -
46 O
47 O
48 O
49 O
50 O
51 O
52 O
53 O
54 I
55 O
56 I
57 I
58 I
59 I
60 O
61 O
62 O
63 I
64 I
65 I
66 O
67 I
68 O
69 I
70 -
71 -
72 I
P34
P33
PCD_MUTE CD s audio signal mute output
PDSP_ODA
In MD, motor driver s power save command ouput
Power Save Mode(High), Normal Mode(Low)
In MD, all motor s output "cut off" command ouput
Cut Off Mode(High), Normal Mode(Low)
Constant velocity signal input
Ok(High), Not Ok(Low)
DSP chip enable output
In MD, load motor "forward" command output
To DSP, data output
From DSP, data input
Clock output for interface with DSP
In MD, SW2 state input. Refer to CD Player.
DSP power suppler ON ouptut
Description
Beep sound (2KHz) output
To LCD driver, data output
Not to be used
Clock output for interface with LCD driver
Not to be used
Not to be used
Not to be used
Power supply (+5V)
Ground
PLL IC enable output
LCD driver enable output
LCD driver reset output
Normal(High), Reset(Low)
External amplifier ON output
LED flashing control output
Not to be used
Not to be used
Not to be used
Focusing OK signal input
Ok(High), Not Ok(Low)
DSP reset output
Not to be used
Not to be used
Not to be used
Not to be used
To CD changer, data output
For diode option check, signal 1 output. Refer to Option Diode.
For diode option check, signal 2 output. Refer to Option Diode.
For diode option check, signal 1 or 2 input2. Refer to Option Diode.
For diode option check, signal 1 or 2 input1. Refer to Option Diode.
For diode option check, signal 1 or 2 input0. Refer to Option Diode.
Clock output for interface with PLL IC
From PLL IC, data input
To PLL IC, data output
Telephone mute input
Ground
Power supply (+5V)
Not to be used
P32
PCD_FWD
Name in Model Name in Micom
PCD_SW2 P31
PCD_PWR
P10/SO0
PDSP_IDA P11/SI0/SB0
PDSP_OCLK P12/SCK0
PDRV_OPS P13/SO1
PDRV_OMUTE P14/SI1/SB1
PDSP_IFSEQ P15/SCK1
PDSP_OCEN P16/T1PWML
PBEEP P17/T1PWMH/BUZ
PFRT_DO SI2P0/SO2
N.C SI2P1/SI2/SB2
PFRT_CLK SI2P2/SCK2
N.C SI2P3/SCK20
N.C PWM1
N.C PWM0
VDD VDD2
GND VSS2
PPLL_CE P00
PFRT_CE P01
PFRT_RES P02
PREMOTE P03
PLED P04
N.C P05
N.C P06
N.C P07
PDSP_IDRF P20/INT4/T1IN
PDSP_IRST P21/INT4/T1IN
N.C P22/INT4/T1IN
N.C P23/INT4/T1IN
N.C P24/INT5/T1IN
N.C P25/INT5/T1IN
PCDC_DO P26/INT5/T1IN
POPT_OUT0 P27/INT5/T1IN
POPT_OUT1 PB7/D7
POPT_IN2 PB6/D6
POPT_IN1 PB5/D5
POPT_IN0 PB4/D4
PPLL_CLK PB3/D3
PPLL_DI PB2/D2
PPLL_DO PB1/D1
PTEL_MUTE PB0/D0
GND VSS3
VDD VDD3
N.C PC7/A7
Forward Low High
Break mode High High
Reverse High Low
Open mode Low Low
Function PCD_R PCD_F
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