Pioneer PDP-4271HD Service Manual page 185

5
PIN FUNNCTION
No. Pin Name
1 - 30 OUT3 - OUT32
31 N.C.
32 - 33 V
DDH
34 N.C.
35 - 37 GND1
38 N.C.
39 GND2
40 - 41 GND1
42 N.C.
43 - 44 V
DDH
45 N.C.
46 - 77 OUT33 - OUT64
78 N.C.
79 - 80 V
DDH
81 N.C.
82 - 83 GND1
84 DIR
85 SO
86 CLK
87 LAT
88 V
DD
89 OC1
90 OC2
91 SI
92 CLR
93 - 94 GND1
95 N.C.
96 - 97 V
DDH
98 N.C.
99 - 100 OUT1 - OUT2
5
6
I/O
O High-voltage push-pull output
−
Not used
−
Power for High-voltage circuit
−
Not used
−
GND
−
Not used
−
GND
−
GND
−
Not used
−
Power for High-voltage circuit
−
Not used
O High-voltage push-pull output
−
Not used
−
Power for High-voltage circuit
−
Not used
−
GND
Setting the shift direction of shift-register
I
L : reverse side shift (SO→SI), H : forward side shift (SI→SO)
I/O Serial data In/Out
Serial clock Input Down-side edge trigger
I
LAT data Input
I
L : The data of shiftregister is transferred to ouput latch.
H : The ouput data of latch is holded.
−
Power for Logic circuit
Output control
I Output is controlled by truth table right side.
I
I/O Serial data In/Out
All output reset CLR terminal : L → normal operation, CLR terminal : H→ All output "H"
I
−
GND
−
Not used
−
Power for High-voltage circuit
−
Not used
O High-voltage push-pull output
PDP-4271HD
6
7
Pin Function
OC1 OC2
L L
L H
H L
H H
7
8
A
B
C
OUT
ALL Hi-Z
DATA
ALL L
D
ALL H
E
F
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