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Ic DESCRIPTION-2 IC, lJPDl 7709GC-51 7-399
Pin No. 1 2 3 4 5 6 7 8 9 Pin Name
I/o
]1
Tape mechanism standby input
Description
ST-BY
MS signal input (H: Track absent, L: Track present) No connection Tape end detection input I
FWD/REV mechanism position detection input
Main motor control output
*
SUB M CON2 AUX/MIC H. BASS 1 H. BASS 2 BS CONT NR B CONT SIFT PACK-IN MODE POWER MTL PL CONT CONT
Sub-motor
1 control output 2 control output switching signal output
]0 o 0 0 o o
I I I
Sub-motor AUX/MIC H.BASS H.BASS
I I
10
11 12 13 14 15 16 17 18 19
control output 1 (only display is changed) control output 2 (only display is changed) output output shift switch input I I
MWBS switching
Dolby NR ON/OFF Rotary commander
Tape inserted status detection input Tape mechanism mode pulse input Unit power control output Metal tape ON/OFF output
o 10
I O
POWER MUTE STAND BY M
Muting
output to power amp
I I
20 21
22 23 24 25 26 27 28 29
10
Standby muting output to power amp Device ground (LC75854 (LC75854 key matrix is used simultaneously) key matrix is used simultaneously) input For key matrix (2) For key matrix (1)
GND 3
10
I
Rotary commander AF IN FM S-M AM S-M AM IF FM IF VDD FM LOC OSC AM LOC OSC GND EO 2 EO 1 TEST IF REQ CON LOC/DX OUT II II II I I � I I �
I
I I
AF level input during AF operation FM S-meter signal input AM S-meter signal input AM IF count signal input FM IF count signal input Device power supply FM local oscillation AM local oscillation Device ground Charge pump output for low-pass filter Charge pump output for low-pass filter Device test input (need to be pulled down) IF count signal request output LOC/DX switching output during radio tuning input input
30 31
32 33 34 35 36 37 38 39
I
I
I
0 0
�
I
o o o
BEEP OUT
Beep sound output (200Hz, 3kHz, 50ms) The input is accepted only when the display input is received (MONO=H, ST=L). In
I
40
ST IND MOIST
OUT
I/o
other modes, the ST indication MONO key is pressed.
is switched off. Forced monaural output when the
18
 $4.99 CTFX728 AIWA
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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