Ic Description - Aiwa XR-H2000 Service Manual

IC DESCRIPTION (GE-NH2000)
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IC, LC866448W
3 7 63 1515 0
Pin No. Pin Name
1 O-C.SHIFT
2 PRO LOGIC
3 3-STEREO
4 PHANTOM
5 NORMAL
6 NC
7 RESET
8 NC
9 NC
10 VSS1
11 CF1
12 CF2
13 VDD1
14 I-HOLD
15 I-KEY1
16 NC
17 I-SPEANA
18 NC
TE 19 I-JOG
L 13942296513
20~23 NC
24 PRO LOGIC
25~33 G1~G9
34~40 S1~S7
41 VDD2
42 VP
43~63 S8~S28
64 NC
65 LED ON
66 LED ON
67~69,72 NC
70 O-L FREQ ON
71 O-H FREQ ON
73 VSS2
74 SPEANA C
75 SPEANA B
76 SPEANA A
77 SEL
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78~79 NC
80 I/O-SERIAL
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I/O Description
O Micro computer clock shift output.
O PRO LOGIC LED output.
O 3 STEREO LED output.
O PHANTOM LED output.
O NORMAL LED output.
– Not connected.
I Reset input.
– Connected to GND.
– Connected to GND.
– GND.
–
Connected to crystal oscillator (5.76MHz).
–
– Power supply.
System power supply monitor AD input.'H':Normal operation.'L':to stop
I
clock and main memory.
I KEY 1 AD input.
– Connected to GND.
I Spectrum analyzer level AD input.
– Connected to GND.
I Jog rotary encoder input.
– Connected to GND.
I Input prologic switch "H" when prologic ,"L" when not prologic.
O FL gird output.
O FL Segment output.
– Connected to GND.
– Power FL display negative supply terminal.
O FL Segment S8~S28 output.
– Not used.
O MULTI JOG LED output.
O MULTI JOG LED output.
– Not connected.
O Spectrum analyzer low frequency output.
O Spectrum analyzer high frequency output.
– GND.
O Spectrum analyzer band switch output C.
O Spectrum analyzer band switch output B.
O Spectrum analyzer band switch output A.
O Spectrum analyzer band switch output select .
– Not connected.
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I/O Input/output serial data for communication.
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2 9
8
Q Q
3 6 7 1 3 1 5
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– 55 –
9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
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