Samsung DVD-907, Service Manual

Page: 24 / 146

IC Descriptions
6-13 Samsung Electronics
VSS
VCC
A16
A17
A18
A19
A20
A21
A22
A23
/RD
/WR
ML0/DIF0
WAIT
/BUSRQ
/BUSAK
ED_K
ED_T
/CS0
/CS1
/CS2
DVD_SEL
OPEN
CLOSE
S/D_SEL
SDA
SCL
BASS
SLEDGS
WDTO
V
SS
V
CC
A16
A17
A18
A19
A20
A21
A22
A23
P30
P31
P32
P33
P34
P35
P36
P37
P40
P41
P42
P60
P61
P62
P63
P64
P65
P66
P67
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
I/O
O
O
O
O
O
O
O
O
O
O
O
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
GND(0V)
+5V
Address Bus 16
Address Bus 17
Address Bus 18
Address Bus 20
Address Bus 21
Address Bus 22
Address Bus 23
Strobe for Reading External Momory
Strobe for Writing Data AD0 to AD7
Audio DAC Data Latch 0
/AKM4324 Control(“L”=16/24bit, “H”=20bit)
Address Bus 19
Request CPU Bus Wait
Bus Request
Bus Acknowledge
EEPROM Trans. Clock(I2S)
EEPROM Trans. Data(I2S)
Chip Select 0
Chip Select 1
Chip Select 2
DVD/CD Mode Control(DVD=”Low”)
Door Open Motor Control
Door Close Motor Control
Single/Dual Disc Select(Single=”Low”)
Video Encoder Trans. Data(l 2 C)
Video Encoder Trans. Clock(l 2 C)
Bass Redirection Control(“L”=SW On, “H”=SW Off)
Sled Gain Select
FUNCTION
PIN I/O NAME
FUNCTION
PIN I/O NAME
VSS
FEI
SPFG
/SECAM
/PAL
/NTSC
OP-SW
CL-SW
VREFH
V
SS
P50
P51
P52
P53
P54
P55
P56
P57
VREFH
91
92
93
94
95
96
97
98
99
100
I
I
I
I
I
I
I
I
I
GND
Focus Error Input
Spindle FG Input
SECAM=”H”
PAL =”H”
NTSC=”H”
Door Open SW
Door Close SW
Reference Voltage Input to A/DC(
¡
H
¡–
)
PIN ASSIGNMENT