Sharp ER-A450T Service Manual - Page 21

OPC2

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Pin Signal No. name 130 GND 131 GND 132 GND 133 BA6 134 BA5 135 BA4 136 BA3 137 BA2 138 BA1 139 PHAI 140 Vcc 141 Vcc 142 Vcc 143 BA0 In/Out Function - GND - GND - GND O Address bus 6 for PB-RAM O Address bus 5 for PB-RAM O Address bus 4 for PB-RAM O Address bus 3 for PB-RAM O Address bus 2 for PB-RAM O Address bus 1 for PB-RAM I TPRC1 clock input pin (9.83 MHz) - +5V - +5V - +5V O Address bus 0 for PB-RAM 2-5. OPC2 1) Pin configuration Pin Signal No. name 144 BD7 145 BD6 146 BD5 147 GND 148 BD4 149 BD3 150 GND 151 GND 152 GND 153 BD2 154 BD1 155 BD0 156 BRAS 157 BRAS 158 RESET 159 GND 160 NU In/Out Function I/O Data bus 7 for PB-RAM I/O Data bus 6 for PB-RAM I/O Data bus 5 for PB-RAM - GND I/O Data bus 4 for PB-RAM I/O Data bus 3 for PB-RAM - GND - GND - GND I/O Data bus 2 for PB-RAM I/O Data bus 1 for PB-RAM I/O Data bus 0 for PB-RAM O PB-RAM chip select: Active HIGH (Nu) O PB-RAM chip select: Active LOW I TPRC1 reset signal - GND - GND /DTRB /RTSB RCVDTB /CTSB /DSRB TRNRDYB RCVRDYB TRNEMPB SYCBKB GND /CSC TRNDTC /DTRC /RTSC RCVDTC /CTSC /DSRC TRNRDYC RCVRDYC TRNEMPC SYCBKC VCC GND /CSD TRNDTD /DTRD /RTSD RCVDTD /CTSD /DSRD TRNRDYD RCVRDYD TRNEMPD SYCBKD /WIN /RIN RSLCT0 RSLCT1 RST MCLK 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 SL00 1 SL01 2 SL02 3 SL10 4 SL11 5 SL12 6 SL20 7 SL21 8 SL22 9 SL30 10 SL31 11 SL32 12 /CD0 13 BRK0 14 TRNEMP0 15 RCVRDY0 16 TRNRDY0 17 /CTS0 18 RCVDT0 19 VCC 20 GND 21 /CI0 22 /RTS0 23 /CS0 24 /CD1 25 BRK1 26 TRNEMP1 27 RCVRDY1 28 TRNRDY1 29 /CTS1 30 RCVDT1 31 /CI1 32 /RTS1 33 /CS1 34 /CD2 35 TRNEMP2 36 RCVRDY2 37 TRNRDY2 38 CTS2Z 39 RCVDT2 40 120 TRNDTB 119 /CSB 118 GND 117 SYCBKA 116 TRNEMPA 115 RCVRDYA 114 TRNRDYA 113 /DSRA 112 /CTSA 111 RCVDTA 110 /RTSA 109 /DTRA 108 TRNDTA 107 /CSA 106 UTST 105 DBTST 104 RCVCLK 103 TRNCLK 102 RES 101 GND 100 VCC 99 /W 98 /R 97 DB7 96 DB6 95 DB5 94 DB4 93 GND 92 DB3 91 DB2 90 DB1 89 DB0 88 /RES 87 /WR 86 /RD 85 /OPTCS 84 A5 83 A4 82 A3 81 A2 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 A1 A0 /TRQ2 /TRQ1 /TRRQ TXE RXDATA0 /TRV /RSRQ /POF PX US1CH AB1 AB0 TRCK XOUT X2 X1 VCC GND D7 D6 D5 D4 GND D3 D2 D1 D0 /CS3 /CI3 RCVDT3 /CTS3 TRNRDY3 RCVRDY3 TRNEMP3 BRK3 /CD3 /CS2 /CI2 4 - 13

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Pin
No.
Signal
name
In/Out
Function
130
GND
—
GND
131
GND
—
GND
132
GND
—
GND
133
BA6
O
Address bus 6 for PB-RAM
134
BA5
O
Address bus 5 for PB-RAM
135
BA4
O
Address bus 4 for PB-RAM
136
BA3
O
Address bus 3 for PB-RAM
137
BA2
O
Address bus 2 for PB-RAM
138
BA1
O
Address bus 1 for PB-RAM
139
PHAI
I
TPRC1 clock input pin (9.83 MHz)
140
Vcc
—
+5V
141
Vcc
—
+5V
142
Vcc
—
+5V
143
BA0
O
Address bus 0 for PB-RAM
Pin
No.
Signal
name
In/Out
Function
144
BD7
I/O
Data bus 7 for PB-RAM
145
BD6
I/O
Data bus 6 for PB-RAM
146
BD5
I/O
Data bus 5 for PB-RAM
147
GND
—
GND
148
BD4
I/O
Data bus 4 for PB-RAM
149
BD3
I/O
Data bus 3 for PB-RAM
150
GND
—
GND
151
GND
—
GND
152
GND
—
GND
153
BD2
I/O
Data bus 2 for PB-RAM
154
BD1
I/O
Data bus 1 for PB-RAM
155
BD0
I/O
Data bus 0 for PB-RAM
156
BRAS
O
PB-RAM chip select: Active HIGH (Nu)
157
BRAS
O
PB-RAM chip select: Active LOW
158
RESET
I
TPRC1 reset signal
159
GND
—
GND
160
NU
—
GND
2-5. OPC2
1) Pin configuration
1
SL00
2
SL01
3
SL02
4
SL10
5
SL11
6
SL12
7
SL20
8
SL21
9
SL22
10
SL30
11
SL31
12
13
/CD0
14
BRK0
15
TRNEMP0
16
RCVRDY0
17
TRNRDY0
18
/CTS0
19
RCVDT0
20
VCC
21
GND
22
/CI0
23
/RTS0
24
/CS0
25
/CD1
26
BRK1
27
TRNEMP1
28
RCVRDY1
29
TRNRDY1
30
/CTS1
31
32
33
/RTS1
34
35
36
TRNEMP2
37
RCVRDY2
38
TRNRDY2
39
CTS2Z
40
RCVDT2
160
MCLK
159
158
RSLCT1
157
RSLCT0
156
/RIN
155
/WIN
154
SYCBKD
153
TRNEMPD
152
RCVRDYD
151
TRNRDYD
150
/DSRD
149
/CTSD
148
RCVDTD
147
/RTSD
146
/DTRD
145
TRNDTD
144
/CSD
143
GND
142
VCC
141
SYCBKC
140
TRNEMPC
139
RCVRDYC
138
TRNRDYC
137
/DSRC
136
/CTSC
135
RCVDTC
134
/RTSC
133
/DTRC
132
TRNDTC
131
/CSC
130
GND
129
SYCBKB
128
TRNEMPB
127
RCVRDYB
126
TRNRDYB
125
/DSRB
124
/CTSB
123
RCVDTB
122
/RTSB
121
/DTRB
41
/CI2
42
/CS2
43
/CD3
44
BRK3
45
TRNEMP3
46
RCVRDY3
47
TRNRDY3
48
/CTS3
49
RCVDT3
50
/CI3
51
/CS3
52
D0
53
D1
54
D2
55
D3
56
GND
57
D4
58
D5
59
D6
60
D7
61
GND
62
VCC
63
X1
64
X2
65
XOUT
66
TRCK
67
AB0
68
AB1
69
US1CH
70
PX
71
/POF
72
/RSRQ
73
/TRV
74
RXDATA0
75
TXE
76
/TRRQ
77
/TRQ1
78
/TRQ2
79
A0
80
A1
120
TRNDTB
119
/CSB
118
GND
117
SYCBKA
116
TRNEMPA
115
RCVRDYA
114
TRNRDYA
113
/DSRA
112
/CTSA
111
RCVDTA
110
/RTSA
109
/DTRA
108
TRNDTA
107
/CSA
106
UTST
105
DBTST
104
RCVCLK
103
TRNCLK
102
RES
101
GND
100
VCC
99
/W
98
/R
97
DB7
96
DB6
95
DB5
94
DB4
93
92
91
90
DB1
89
DB0
88
/RES
87
/WR
86
/RD
85
/OPTCS
84
A5
83
A4
82
A3
81
A2
GND
RST
SL32
RCVDT1
/CI1
/CS1
/CD2
DB2
DB3
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