SD-AT50H (serv.man17). Function table of IC - Sharp Audio Service Manual (repair manual). Page 8

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SD-AT50H
IC301 RH-iX0563AWZZ: DSP System Microcomputer (IX0563AW) (3/3)
Terminal Name
Pin No.
Input/Output
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Port Name
74
P16/D14/INT4
DSP_INTREQ
Input
Input of DSP data receive request signal.
L : DSP -> microcomputer DATA receive request.
75
P15/D13/INT3
H.P_SW
Input
Headphones insert SW detect input.
“H” : H.P insert, SP relay OFF, A/D reset control
76*
P14/D12
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
77*
P13/D11
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
78*
P12/D10
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
79
P11/D9
CONFIG
Output
CONFING setting output.
SUBWOOFER : “H” with YES (CONGING1)
“L” with NO (CONFING2).
80*
P10/D8
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
81
P07/D7
AUDITION
Input
Audition MODEL select input.
H : audition MODEL, L : normal MODEL.
82
P06/D6
POWER_KEY
Input
Power supply operation key input.
83
P05/D5
FM_STB
Output
 “L” when FUNCTION is “FM STEREO” or “FM MONO”.
Otherwise “H”.
84*
P04/D4
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
85
P03/D3
CCB_DO
Input
Serial data input from the Sanyo CCB device.
86
P02/D2
CCB_CL
Output
Serial clock output to the Sanyo CCB device.
87
P01/D1
CCB_DI
Output
Serial command data output to the Sanyo CCB device.
88
P00/D0
CCB_CE
Output
CE control output to the Sanyo CCB device.
89
P107/AN7/KI3
TUNER_SM
Input
A/D import, input of tuner field intensity comparison detect.
(A/D Input)
90*
P106/AN6/KI2
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
(A/D Input)
91
P105/AN5/KI1
PROTECT
Input
A/D import, system abnormality detect input.
(A/D Input)
92
P104/AN4/KI0
AREA
Input
A/D import, destination setting for TUNER BAND.
(A/D Input)
93*
P103/AN3
N.C.
Output
Set it as an output terminal and fix it to Low since it is not used.
(A/D Input)
94
P102/AN2
DVD_POWER
Input
A/D import, input for detecting the DVD player status.
(A/D Input)
95
P101/AN1
KEY1
Input
A/D import, main body key input 1.
(A/D Input)
96
AVSS
GND
VSS terminal of the A/D converter.  Connected to GND (VSS).
97
P100/AN0
POWER
Input
Port for detecting power ON when importing the A/D.
(A/D Input)
98
VREF
VREF
Input
Reference voltage input terminal of the A/D converter.
Connected to the VCC terminal.
99
AVCC
AVCC
Input
Power supply input terminal of the A/D converter.
Connected to the VCC terminal.
100
P97/ADTRG/SIN4
GND
Input
Port processing. Fixed to “L”.  (Not used)
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