Samsung ML-920 Service Manual page 137

No Pin Name
121 nDRAMCAS3
122 Vsso
123 nDRAMOE
124 nDRAMWE
125 Vssi
126 nDRAMRAS0
127 Vddi
128 nDRAMRAS1
129 nDRAMRAS2
130 nDRAMRAS3
131 Vsso
132 DRAMD0
133 Vddo
134 DRAMD1
135 DRAMD2
136 DRAMD3
137 DRAMD4
138 Vsso
139 DRAMD5
140 DRAMD6
141 DRAMD7
142 Vssi
143 DRAMD8
144 Vddi
145 DRAMD9
146 DRAMD10
147 DRAMD11
148 Vssp
149 DRAMD12
150 Vddp
Samsung Electronics
I/O Reset Value
O L
Vss -
O H DRAM Data Out Enable
O H DRAM Data Write Enable
Vss -
O L
Vdd -
O L
O "
O "
Vss -
I/O Input
Vdd -
I/O Input
I/O "
I/O "
I/O "
Vss -
I/O Input
I/O "
I/O "
Vss -
I/O Input
Vdd -
I/O Input
I/O "
I/O "
Vss -
I/O Input
Vdd -
- This Document can not be used without Samsung's authorization -
CIRCUIT DESCRIPTION
Description
DRAM Cas Strobe 3
5 V Gnd
3.3 V Gnd
DRAM Ras Strobe 0
3.3 V
DRAM Ras Strobe 1
DRAM Ras Strobe 2
DRAM Ras Strobe 3
5 V Gnd
DRAM Data Bus 0
5 V
DRAM Data Bus 1
DRAM Data Bus 2
DRAM Data Bus 3
DRAM Data Bus 4
5 V Gnd
DRAM Data Bus 5
DRAM Data Bus 6
DRAM Data Bus 7
3.3 V Gnd
DRAM Data Bus 8
3.3 V
DRAM Data Bus 9
DRAM Data Bus 10
DRAM Data Bus 11
5 V Gnd
DRAM Data Bus 12
5 V
PAD
PHOB8, 8 mA
"
"
PHOB8, 8 mA
PHOB8, 8 mA
"
"
PHBTT12, 12mA
PHBTT12, 12mA
"
"
"
PHBTT12, 12mA
"
"
PHBTT12, 12mA
PHBTT12, 12mA
"
"
PHBTT12, 12mA
Repair Manual
3-7