Sony XR-C7200R Service Manual page 24

Pin No. Pin Name
47 MUT
48 VOLCE
49 NCO
50 VOLCKO
51 NCO
52 VOLSO
53 to 56 NCO
57 DIMMER
58, 59 NCO
60 RESET
61 SIRCS
62 BU-IN
63 DOORSW
64 ACCIN
65 NOSESW
66 TELMUT
67 KEYACK
68 VDD
69 OSCOUT
70 OSCIN
71 GND
72 XT-OUT
73 XT-IN
74 AVDD
75 AVREF0
76 KEYIN0
77 KEYIN1
78 KEYSEL0
79 KEYSEL1
80 DESTSEL
I/O
Muting control signal output to the line muting circuit and power amplifier (IC701)
O
"H": muting on
O Chip enable signal output to the electrical volume (IC301)
O Not used (open)
O Serial data transfer clock signal output to the electrical volume (IC301)
O Not used (open)
O Serial data output to the electrical volume (IC301)
O Not used (open)
O Dimmer control signal output terminal
O Not used (open)
System reset signal input from the reset signal generator (IC551) and reset switch (S551)
I
"L" is input for several 100 msec after power on, then it changes to "H"
I Sircs signal input from the remote control receiver (IC702)
Battery detect signal input from the SONY bus interface (IC571) and battery check circuit
I
"H": battery on
I Door open/close detect input "L": door close
I Accessory detect signal input terminal "L": accessory on
I Detects the removal of the attaching and removing type front panel block "L": attaching
I Telephone muting signal input terminal At input of "L", the signal is attenuated by –20 dB
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
I
and eject keys in the power off status On at input of "H" (fixed at "H" in this set)
— Power supply terminal (+5V)
O Main system clock output terminal (5 MHz)
I Main system clock input terminal (5 MHz)
— Ground terminal
O Sub system clock output terminal (32.768 kHz)
I Sub system clock input terminal (32.768 kHz)
— Power supply terminal (+5V) (for A/D converter)
I Reference voltage input terminal (+5V) (for A/D converter)
Key input terminal (A/D input)
OFF, SOURCE, – = 0 SEEK/AMS, MODE *, + + ) SEEK/AMS, SOUND,
I
SHIFT, 1, 2, 3, 4 keys input (LSW700 to LSW710)
Key input terminal (A/D input) 6, DSPL, LIST, 10, 9, 8, 7, 6, 5 keys input
I
(LSW800, LSW711, LSW712 and LSW715 to LSW720)
I Setting terminal for the key function select (fixed at "L")
I Setting terminal for the key function select (fixed at "H")
I Destination setting terminal (fixed at "L")
Function
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