Aiwa cdc-x217 Service Manual page 31

Pin No. Pin Name
44 XOUT
45 XIN
46 XVSS
47 SBSY
48 EFLG
49 PW
50 SFSY
51 SBCK
52 FSX
53 WRQ
54 RWC
55 SQOUT
56 COIN
57 CQCK
58 RES
59 TST11
60 16M
61 4.2M
62 TEST5
63 CS
64 TEST1
I/O
O
Connection for a 16.93 MHz crystal oscillator element.
I
- Crystal oscillator ground. (Must be connected to 0V.)
O Subcode clock synchronization signal output. (Not used)
O C1, C2, signal a double error correction monitor. (Not used)
O Subcode P, Q, R, S, T, U and W output. (Not used)
Subcode frame synchronization signal output. This signal falls when the subcode are in standby
O
state. (Not used)
I Subcode read out clock input. This is a Schmitt input. (Must be connected to 0V.)
O Output pin for the 7.35 kHZ synchronization signal divided from the crystal oscillator. (Not used)
O Subcode Q output standby output.
I Read/write control input. This is a Schmitt input.
O Subcode Q output.
I Command input pin from control microprocessor.
Input for both the command input acquisition clock and the SQOUT pin subcode
I
readout clock input pin. This is Schmitt input.
I Reset input. This pin must be set low briefly after power is first applied.
O Test output. Leave open. (Normally output a low level.) (Not used.)
O 16.9344 MHz output.(Not used.)
O 4.2336 MHz output.
I Test input. A pull-down resistor is built-in. (Must be connected to 0V.)
Chip select input. A pull-down resistor is built-in.
I
(Must be connected to 0V.)
I Test input. No pull-down resistor. (Must be connected to 0V.)
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Description