Sony CDX-MP450X Service Manual page 17

Pin No. Pin Name
78 MDATA7
79 LDQM
80 UDQM
81 VDD
82 MWE
83 VSS
84 SD-CLK
85 SD-CAS
86 SD-RAS
87 VDD
88 SD-CS1
89 VSS
90 SD-CS0
91 VDD2.5
92 NC
93 VSS
94 NC
95 VDD
96 MADDR9
97 VSS
98 – 100 MADDR11, 8, 10
101 VDD
102 MADDR7
103 VSS
104 – 106 MADDR0, 6, 1
107 VDD
108 MADDR5
109 VSS
110 – 112 MADDR2, 4, 3
113 VDD
114 MADDR12
115 VSS
116 MADDR13
117 VDD2.5
118 MADDR14
119 VSS
120 – 122 MADDR15 – 17
123 VDD
124 MADDR18
125 VSS
126, 127 MADDR19, 20
128 ROM-CS
129 RESERVED
130 NC
131, 132 GND
133 RESERVED
134 VDD
135 RESERVED
136 VSS
137 – 141 RESERVED
142, 143 VDATA0, 1
144 VDD2.5
145 VDATA2
I/O
I/O Memory data 7 input/output
O SDRAM LDQM output to DRAM IC (IC520).
O SDRAM UDQM output to DRAM IC (IC520).
— Power supply pin (+3.3 V)
O SDRAM write enable output to DRAM IC (IC520).
— Ground
O SDRAM system clock output to DRAM IC (IC520).
O SDRAM column address output to DRAM IC (IC520).
O SDRAM row address output to DRAM IC (IC520).
— Power supply pin (+3.3 V)
O SDRAM bank select 1 output to DRAM IC (IC520). (Not used in this set)
— Ground
O SDRAM bank select 0 output to DRAM IC (IC520).
— Power supply pin (+2.5 V)
O Not used. (Open)
— Ground
O Not used. (Open)
— Power supply pin (+3.3 V)
O Memory address 9 output
— Ground
O Memory address 11, 8 and 10 output
— Power supply pin (+3.3 V)
O Memory address 7 output
— Ground
O Memory address 0, 6 and 1 output
— Power supply pin (+3.3 V)
O Memory address 5 output
— Ground
O Memory address 2, 4 and 3 output
— Power supply pin (+3.3 V)
O Memory address 12 output
— Ground
O Memory address 13 output
— Power supply pin (+2.5 V)
O Memory address 14 output
— Ground
O Memory address 15 – 17 output
— Power supply pin (+3.3 V)
O Memory address 18 output
— Ground
O Memory address 19 and 20 output (Not used in this set)
O ROM chip select output to ROM IC (IC521).
I Fixed at L in this set.
O Not used. (Open)
— Ground
I Fixed at L in this set.
— Power supply pin (+3.3 V)
I Fixed at L in this set.
— Ground
I Fixed at L in this set.
O Video data bus 0 and 1 output (Not used in this set)
— Power supply pin (+2.5 V)
O Video data bus 2 output (Not used in this set)
Pin Description
CDX-MP450X
17