KRC-165
4
● Terminal Description (IC1 : X14-6860-20)
Pin No.
Pin name I/O Description
Processing Operation
1 I N.C. (Not used)
2 VL1 I
Positive power supply connection terminal 1
for LCD driver
3 KI0 I Key return input 0
4 KI1 I Key return input 1
5 KI2 I Key return input 2
6 KS0 O Key scan output 0
7 KS1 O Key scan output 1
8 KS2 O Key scan output 2
9 KS3 O Key scan output 3
10 S METER I S-meter input from the F/E
11 KS4 O Key scan output 4
12 BEEP O BEEP sound output
13 O N.C. (Not used)
14 MOTOR O Cassette motor on/off output Hi : Motor ON
15 FF/REW I FF/REW detection input Lo : FF/REW, Hi : PLAY
16 PACK IN I Cassette tape Pack-in detection input Lo : Pack-in
17 KI3 I Key return input 3
18 FWD/REV I FWD/REV mode detection input Lo : REV mode
19-25 O N.C. (Not used)
26 SD I SD input from the F/E Hi : Station detected
27 PLL CLK O Clock output to the F/E
28 PLL DATA I/O Data input/output with the F/E
29 IFC I N.C. (Not used)
30 AM+B O AM+B ON/OFF output Hi : during AM reception
31 FM+B O FM+B ON/OFF output Hi : during FM reception
32 SCK O Clock output to the E-VOL. IC
33 SDA I/O Data input/output with the E-VOL. IC
34 O Pull down to GND lines. (Not used)
35 RESET I RESET input Lo : System reset
36,37 O N.C. (Not used)
38 XIN - Main clock resonator connection terminal
39 XOUT - Main clock resonator connection terminal
40 VSS - Ground connection terminal Connected to GND lines.
41 IC2 Type 1 I Constant select terminal 1 Pull down to GND lines.
42 IC2 Type 2 I Constant select terminal 2 Pull down to GND lines.
43 O N.C. (Not used)
44 SEL1 I Destination select terminal 1 KRC-165 : (SEL1, SEL2)=(Lo, Hi)
45 SEL2 I Destination select terminal 2 RX-290 : (SEL1, SEL2)=(Hi, Lo)
46 MUTE O Audio mute on/off output Hi : Mute ON
47 STBY O Power IC standby control output Hi : POWER ON mode
When the momentary power down, after
48 SVR O Power IC reset terminal ACC ON/OFF is detected and after POWER OFF,
the output becomes Hi temporarily.
49 ACC DET I ACC detection input Hi : ACC OFF
Hi : When momentary power down detected
50 B.U. DET I Momentary power down detection input or B.U. OFF
Lo : B.U. ON
MICROCOMPUTER'S TERMINAL DESCRIPTION
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