Bus Controller
C-MOS SCSI I/O PROCESSOR
—TOP VIEW—
156 155
VDD (+5 V)
VDD (+5 V)
NC NC GND
GND
GND
GND
GND
157
w
w
160
a D ...
Description
C-MOS SCSI I/O PROCESSOR
—TOP VIEW—
156 155
VDD (+5 V)
VDD (+5 V)
NC NC GND
GND
GND
GND
GND
157
w
w
160
a D . w
S a t
e e h
U 4 t
.c
145
om
140 135 130 125 120 115
SYM53C720REV.F (1/3) IL08
150
110
NC NC NC NC GND VDD (+5 V)
105
NC NC
104 100
GND
165 GND 170 GND 175
180
GND
185
VDD (+5 V) GND
190
195
200
GND VDD (+5 V) NC NC
VDD (+5 V)
VDD (+5 V)
205 208
w
w
10
15
20
25
30
35
40
45
50
52
w
GND
t a .D
GND
S a
GND
e h
GND
U 4 t e
.c
m o
GND GND VDD (+5 V) GND GND
95
90
85
80
75
70
VDD (+5 V) GND
65
60 VDD (+5 V) GND NC NC NC NC
55 53
1
NC NC GND 5
w
w
w
.D
a t a
e h S
4 t e
U
m o .c
SYM53C720REV.F (2/3) * SLAVE, Z = HIGH IMPEDANCE PIN NO.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52
(VDD = +5 V) SIGNAL
NC NC
I/O
— — — * I, O * I, O * I, O * I, O * I, O — * I, O * I, O * I, O — * I, O * I, O — * I, O * I, O * I, O * I, O * I, O — * I, O * I, O * I, O O — * I, O * I, O — * I, O * I, O * I, O * I, O * I, O * Z, O * Z, O * Z, O I I I I O — * I, O * Z, O * Z, O * O, I I * O, I — —
SIGNAL
NC NC GND A10 A11 A12 A13 A14 GND A15 A16 A17 VDD A18 A19 GND A20 A21 A22 A23 A24 GND A25 A26 A27
PIN NO.
53 54 55 56 57 58 59 60 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 91 92 93 94 95 96 97 98 99 100 101 102 103 104
I/O
— — O — O I I/O I/O I/O I/O — I/O I/O — I/O I/O ...
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