KRC-28YG/YA
(X14-) IC1 : SYSTEM u-COM
PORT NAME
I/O
FUNCTION
1 XIN I Clock input
2 TEST 2 - GND
3 LCD DATA IN I LCD driver data input
4 LCD DATA OUT O LCD driver data output
5 LCD CLK O LCD driver clock output
6 STBY I Tape stand-by SW
7 T END I Tape end SW
8 SDA 2 I/O Data line to E-VOL.
9 SCL 2 O Clock line to E-VOL.
10 REQ H O Changer request output
11 DATA C I Changer data input
12 DATA H O Changer data output
13 CH CLK I Changer clock input
14 REQ C I Changer request input
15 CH CON O Changer control
16 LCD CE O LCD driver Chip Enable output
17 AM+B O AM power supply control
18 FM+B O FM power supply control
19 MUTE O Mute output for audio circuit
20 ILLUMI O Illumination on
21 AMP STBY O
Stand-by output to power amp
22 SVR O SVR discharge circuit control
23 P.CON O Power control
24 ANT CONT O Tuner ANT control
25 SUB+ O Sub motor+output
26 SUB- O Sub motor-output
27 - - -
28 SEL 2 I Destination discrimination 2
29 SEL 1 I Destination discrimination 1
30 SEL 0 I Destination discrimination 0
31 VDD - VDD
32 N.CAN I Noise canceller setting
33 MOTOR O Motor-ON output
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37 DSI O Disable System Indicator
38 EQ MUTE O Tape equaliser mute output
39 P.ON O Power on
40 - - -
3
CIRCUIT DESCRIPTION
PORT
No.
34-
36
(X14-) IC1 : SYSTEM u-COM
PORT NAME
I/O
FUNCTION
41 - - -
42 MS CONT O -
43 - - -
44 BEEP O Beep output(2.08KHz)
45 PANEL I Panel ON/OFF detection
46 AMP MUTE O Mute
47 CRSC I -
48 PACK IN I Pack-in detection
49 FWD/REV I Tape FWD/REV
50 SDA3 O PLL/EEPROM data line
51 SCL3 O PLL/EEPROM clock line
52 METAL O Metal mode ON/OFF
53 DOLBY O Dolby
54 AM IF CONT I AM IF count judgement
55 SD I SD input
56 REMOTE I Remote controller
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61 T MODE I Mode pulse input
62 PHONE I Telephone mute input
63 ACC I ACC detection
64 BACK UP I Back Up detection
65 MUSIC I Tape signal detection
66 S-METER I FM band SD detection
67 HOLD I Hold Detection
68 SNS I -
69 LCTR - GND
70 HCTR - GND
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73 VDD - VDD
74 AM IN - GND
75 FM IN - GND
76 VSS - GND
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79 TEST1 - GND
80 XOUT I Clock output
PORT
No.
77,
78
71,
72
57-
60
