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Kenwood KRC-708 - Page 4

Kenwood KRC-708
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UPD784217GC103(105) (IC1: X14-618X-XX)
System MicroComputer
Pin Pin Name Signal Name I/O Purpose Operation Description
52 P84/A4 WIDE O K2I Forced Wide output. H:Forced Wide
53 P85/A5 NARROW I/O K2I Forced Narrow output. H:Forced Narrow
54 P86/A6 AFC I Noise detection time constant SW
During reception: Hi
/During search: Lo.
55 P87/A7 SRM_SW2 I SRM eject position detection. EJECT:Hi
56 P40/AD0 QUAL I RDS reception quality.
57 P41/AD1 R_DATA I RDS data input.
58 P42/AD2 SRM_DET I SRM mechanism detection. Detected: Lo /Not detected: Hi.
59 P43/AD3 FM_SD I FM SD input.
Station detected: Hi
/Not detected: Lo.
60 P44/AD4 N.C. O
61 P45/AD5 MUSIC I Blank detection input.
Music detected: Lo
/Music not detected: Hi.
62 P46/AD6 B/C O Dolby B/C switching. B = Lo, C = Hi
63 P47/AD7 Dolby O Dolby output. ON : Hi, OFF : Lo
64 P50/A8 EQ_MUTE O EQ muting output. During play: Lo /FF or REW:
65 P51/A9 MTL O Metal output. NOMAL : Hi, METAL : Lo
66 P52/A10 F/R O Tape EQ input switching. FWD:Lo, REW:Hi
67 P53/A11 MSC O
Blank detection time constant
switching.
During play: Hi /FF or REW:
Lo.
68 P54/A12 MODE3 I Cassette mechanism mode detection.
69 P55/A13 MODE1 I Cassette mechanism mode detection.
70 P56/A14 MODE2 I Cassette mechanism mode detection.
71 P57/A15 PACK_DET I Cassette mechanism pack detection. Pack detected: Lo.
72 Vss GND - GND terminal.
73 P60/A16 TYPE0 I Destination type terminal 0.
74 P61/A17 TYPE1 I Destination type terminal 1.
75 P62/A18 TYPE2 I Destination type terminal 2.
76 P63/A19 ST_TYPE0 I IC2 Ver.3 destination type terminal 0.
77 P64/RD ST_TYPE1 I IC2 Ver.3 destination type terminal 1.
78 P65/WR N.C. O Not used.
79 P66/WAIT N.C. O Not used.
80 P67/ASTB N.C. O Not used.
81 Vdd Vdd - B.U.5V
82 P100/TI5/TO5 SVR O SVR discharge control. POWER OFF:Hi
83 P101/TI6/TO6 PREMUTE O PRE mute. Active: Lo.
84 P102/TI7/TO7 PMUTE O Power IC muting. P IC ON : Hi
85 P103/TI8/TO8 CASS/SRM O
Cassette mechanism / SRM
mechanism voltage SW terminal.
C mech.:Hi, SRM mech.:Lo
86 P30/TO0 ANT_CON O Antenna control. Active: Hi.
87 P31/TO1 AM+B O AM power supply. Active: Hi.
88 P32/TO2 FM+B O FM power supply. Active: Hi.
89 P33/TI1 P_CON O Power control. Active: Hi.
90 P34/TI2 ACC_DET I Acc detection. Acc OFF:Hi.
91 P35/TI00 REMO I Remote control input.
92 P36/TI01 P_ON O Power supply control. POWER ON:Hi
93 P37 BU_DET I Momentary power down detection. Power down: Hi.
94 TEST TEST - Test terminal.
95 P90 IC2_SDA I/O IC2, IC5 and EEPROM data line.
96 P91 IC2_SCK O IC2, IC5 and EEPROM clock line.
97 P92 MUTE O Muting terminal. OPEN:MUTE ON
98 P93 SW5V O 5 V power supply. Lo=SW5 ON
99 P94 N.C. O Not used.
100 P95 N.C. O Not used.
KRC-708/888/X858/PS988R
4
MICROCOMPUTER TERMINAL DESCRIPTION
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299

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