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VideoCrypt controller 8052
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Pin Funct Connections and Functionality
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1-8 P1.0-P1.7 Internal Bus connected to other chips and
pin 30-40 on MOTOROLA CPU
9 RST Pin 29 on MOTO CPU
10 RxD/P3.0 N.C. (No Connection)
11 TxD/P3.1 N.C.
12 !INT0/P3.2 Card presence switch
13 !INT1/P3.3 Pin 30 on MOTO CPU
14 T0/P3.4 Pin 32 on MOTO CPU
15 T1/P3.5 Pin 18 on MOTO CPU
16 !WR/P3.6 N.C.
17 !RD/P3.7 N.C.
18 XTAL2 7 MHz Clk
19 XTAL1 GND
20 Vss GND
21 P2.0 Card Pad 2 : EEPROM Programming ????
22 P2.1 N.C.
23 P2.2 D input 74LS74, pin 12, Card Clk generator
24 P2.3 D input 74LS74, pin 2, Card Clk generator
25 P2.4 N.C.
26 P2.5 N.C.
27 P2.6 Pin 14 on MOTO CPU
28 P2.7 N.C.
29 !PSEN N.C.
30 ALE/!PROG N.C.
31 !EA/Vpp N.C.
32 P0.7 3.5 MHz Card Clk signal
33 P0.6 Card Pad 6 : RST
34 P0.5 Select CMD 21.0V supply, Card programming
35 P0.4 Select CMD 12.5V supply, Card programming
36 P0.3 Select CMD 15.0V supply, Card programming
37 P0.2 ON CMD Vpp, Card programming
38 P0.1 ON CMD Vcc Card
39 P0.0 Card Pad 3 : I/O
40 Vcc +5V supply
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