Kenwood KTF-2010, Service Manual

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KTF-2010/3010
7
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Descriptions
1 Vdd – Power 5V)
2~8 – I No use
9 /CE I Chip enable L : CE detection
10 /RESET I Microprocessor reset L : RESET
11,12 X1,2 I Main clock oscillator
13 IC(Vpp) – Connect to VSS
14,15 XT1,2 I –
16 Vdd – Power 5V)
17,18 – I No use
19 SBUSY I/O Serial busy signal
20 SDATA I/O Serial data signal
21 /HIGH BLEND I Hi blend L : HIGH BLEND
22 8/16 O XS8/SL16 selector L : SL16
23 /2080,3080 I model selector L : KTF–2010
24 POWER O POWER detection L : STANDBY
25 Avss – A/D converter gnd
26 PLL_DO I PLL DO
27 PLL_CE O PLL chip enable
28 PLL_DATA O PLL data detection
29 PLL_CLK O PLL clock
30 /T_MUTE O TUNER mute L : MUTE ON
31 – I No use
32 S_LEVEL I Signal level
33 N_LEVEL I Noise level
34 Avdd – A/D converter analog voltage
35 Avref – A/D converter standard voltage
36 RDS_CLK I RDS demodulator IC clock
37 RDS_DATA I RDS demodulator IC data
38,39 – I No use
40 Vss – Gnd
41,42 – I No use
43 /STEREO I STEREO pilot detection
44 /SD I SD pilot detection
45 TUNING O To stop noise level detection in tuning H : TUNING
46 Vdd – Power 5V)
47~52 – I No use
53 /IF_BAND O IF BAND selector L : WIDE
54 /RF_ATT O RF_ATT selector L : ON
55 ANT_B O Antenna–B control H : ANT B
56 ANT A O Antenna–A control H : ANT A
57 ENC_B I Encoder counterclockwise detection
58 ENC_A I Encoder clockwise detection
59 HIGH_BLEND_LED O HIGH BLEND LED H : LED ON
60 WIDE_LED O WIDE LED H : LED ON
61 NARROW_LED O NARROW LED H : LED ON
62 ATT_LED O ATT LED H : LED ON
63,64 – I No use
65~70 KR6~1 I Key return 6~1
71~73 – O No use
74~76 SEG16~14 O FL segment output16~14
77 SEG13/KS5 O FL segment output13/key scan5(TUNER selector)
78 SEG12/KS4 O FL segment output12/key scan4
79 Vload – FL controller/driver pull down resistor
80~82 SEG11~9/KS3~1 O FL segment output11~9/key scan3~1
83~90 SEG8~1 O FL segment output8~1
91~100 GRID1~10 O FL grid output1~10
2-2 Pin function
(K)KTF-2010 1P( 98.4.25 4:21 PM y [ W 14
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