Read Sony DVP-LS755P Service Manual online
5-1
SECTION 5
IC PIN FUNCTION DESCRIPTION
DVP-LS755P
5-1. SYSTEM CONTROL PIN FUNCTION (MV-044 BOARD IC201)
Pin No.
Pin Name
I/O
Function
1
IREF
I
Current reference input.It generates reference current for data PLL. (fixed at “L”)
2
PLLVSS
—
Ground
3
LPIOP
O
Positive output of the low pass filter
4
LPION
O
Negative output of the low pass filter
5
LPFON
O
Negative output of loop filter amplifier
6
LPFIP
I
Positive input of loop filter amplifier
7
LPFIN
I
Negative input of loop filter amplifier
8
LPFOP
O
Positive output of loop filter amplifier
9
JITFO
O
RF jitter meter output
10
JITFN
I
Negative input of the operation amplifier for RF jigger meter
11
PLLVDD3
—
Power supply (+3.3V)
12
FOO
O
Focus servo output. PDM output of focus servo compensator
13
TRO
O
Tracking servo output. PDM output of tracking servo compensator
14
TROPENPWM
O
Tray open output, controlled by microcontroller.
15
PWMOUT1
O
The 1st general PWM output (Not used)
16
PWMOUT2
O
The 2nd general PWM output
17
DVDD2
—
Power supply (+2.5V)
18
DMO
O
Disk motor control output. PWM output
19
FMO
O
Feed motor control. PWM output
20
DVSS
—
Ground
21
FG
I
Motor Hall sensor input (Not used)
22 to 27
HIGHA0 to
HIGHA5
O
Address bus A8 to A13
28
DVSS
—
Ground
29 and 30
HIGHA6 and
HIGHA7
O
Address bus A14 and A15
31 to 34
AD7 to AD4
I/O
Data bus HD7 to HD4
35
DVDD3
—
Power supply (+3.3V)
36 to 39
AD3 to AD0
I/O
Data bus HD3 to HD0
40 and 41 IOA0 and IOA1
O
Address bus A0 and A1
42
DVDD2
—
Power supply (+2.5V)
43 to 48
IOA2 to IOA7
O
Address bus A2 to A7
49 and 50
A16 and A17
O
Address bus A16 and A17
51 to 53
IOA18 to IOA20
O
Address bus A18 and A20
54
APLLVSS
—
Ground
55
APLLVDD3
—
Power supply (+3.3V)
56
ALE
I
Microcontroller address latch enable (Not used)
57
IOOE
O
Flash ROM Read enable signal output
58
IOWR
O
Flash ROM Write enable signal output
59
IOCS
O
Flash ROM Chip select signal output
60
DVSS
—
Ground
61
IFBSY
I
IF CON Interrupt input
62
IFSCK
O
Serial data transfer clock signal output to the IF CON
63
IFSDO
O
Serial data output to the IF CON
64
XIFCS
O
IF CON Chip select signal output
65
SCL
O
Clock signal output to the EEPROM
66
DVDD3
—
Power supply (+3.3V)
67
SDA
I/O
Two-way data bus with the EEPROM
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