Aiwa HV-FX7800 Service Manual page 37

IC DESCRIPTION -1/3 (HD6432197A37FX)-2/3
Pin No. Pin Name
43 R/C IN
44 CT DETECT
45 NC
46 NC
47 REC 'H'
48 OTPB 'H'
49 T/UP REEL
50 CAP. REV 'H'
51 TOP SENSOR
52 NC
53 NC
54 NC
55 NC
56 MAIN VCC
57 MAIN VSS
58 HSR 'H'
59 IIC CLK
60 IIC DATA
61 TIMER 'H'
62 P. CTL 'H'
63 FLD CLK
64 FLD DATA OUT
65 FLD DATA IN
66 FLD ENA
67 STAND BY 'H'
68 MODE SW 4
69 MODE SW 3
70 MODE SW 2
71 MODE SW 1
72 LD (–)
73 LD (+)
74 FWE
75 X2 (32.768kHz/OUT)
76 X1 (32.768kHz/IN)
_______
77 RES
78 OSC1 (IN)
79 Vss
80 OSC2 (OUT)
81 VCL
82 MDO
83 D. ADJ
I/O
I Remote data input
I C + detect
– Not connected
– Not connected
O High out at REC mode
O OTPB 'H'
I Take-up reel pulse in
O CAP reverse 'H'
I Tape reader check at top
– Not connected
– Not connected
– Not connected
– Not connected
– Micom +5 V VCC
– Micom GND
O High speed rewind 'H'
O IIC bus clock line
I/O IIC bus data line
O 6 W mode power SW
O High during power on
O FLD interface clock out
O FLD interface data out
I FLD interface data in
O FLD control enable 'H'
O 2W mode power switching
I Mode switch data 4
I Mode switch data 3
I Mode switch data 2
I Mode switch data 1
O Loading motor drive (-)
O Loading motor drive (+)
– Flash write made control pin (Not used in mask)
O 32.768 kHz cristal out
I 32.768 kHz cristal in
I Micom reset pin ('L' active)
I 10 MHz in
– SYSCON GND
O 10 MHz out
I Connect 'C' to VSS
I Mandatory 'high' connect
O Drum control at slow
Description
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