Kenwood KTF-2010 Service Manual page 7

QQ
3 7 63 1515 0
2-2 Pin function
Pin No. Pin Name
1 Vdd
2~8
9 /CE
10 /RESET
11,12 X1,2
13 IC(Vpp)
14,15 XT1,2
16 Vdd
17,18
19 SBUSY
20 SDATA
21 /HIGH BLEND
22 8/16
23 /2080,3080
24 POWER
25 Avss
26 PLL_DO
27 PLL_CE
28 PLL_DATA
29 PLL_CLK
30 /T_MUTE
31
32 S_LEVEL
33 N_LEVEL
TE
L 13942296513
34 Avdd
35 Avref
36 RDS_CLK
37 RDS_DATA
38,39
40
41,42
43 /STEREO
44
45 TUNING
46 Vdd
47~52
53 /IF_BAND
54 /RF_ATT
55 ANT_B
56 ANT A
57 ENC_B
58 ENC_A
59 HIGH_BLEND_LED
60 WIDE_LED
61 NARROW_LED
62 ATT_LED
63,64
65~70 KR6~1
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71~73
74~76 SEG16~14
77 SEG13/KS5
78 SEG12/KS4 .
79 Vload
80~82 SEG11~9/KS3~1
83~90 SEG8~1
91~100 GRID1~10
CIRCUIT DESCRIPTION
I/O
– Power supply(+5V)
– I No use
I Chip enable
I Microprocessor reset
I Main clock oscillator
– Connect to VSS
I
– Power supply(+5V)
– I No use
I/O Serial busy signal
I/O Serial data signal
I Hi blend
O XS8/SL16 selector
I model selector
O POWER detection
– A/D converter gnd
I PLL DO
O PLL chip enable
O PLL data detection
O PLL clock
O TUNER mute
– I No use
I Signal level
I Noise level
– A/D converter analog voltage
– A/D converter standard voltage
I RDS demodulator IC clock
I RDS demodulator IC data
– I No use
Vss – Gnd
– I No use
I STEREO pilot detection
/SD I SD pilot detection
O To stop noise level detection in tuning
– Power supply(+5V)
– I No use
O IF BAND selector
O RF_ATT selector
O Antenna–B control
O Antenna–A control
I Encoder counterclockwise detection
I Encoder clockwise detection
O HIGH BLEND LED
O WIDE LED
O NARROW LED
O ATT LED
– I No use
I Key return 6~1
– O No use
O FL segment output16~14
x ao
y
O FL segment output13/key scan5(TUNER selector)
i O FL segment output12/key scan4
– FL controller/driver pull down resistor
O FL segment output11~9/key scan3~1
O FL segment output8~1
O FL grid output1~10
KTF-2010/3010
8
Descriptions
Q Q
3 6 7 1 3
u163
.
2 9 9 4 2 8
L : CE detection
L : RESET
–
L : HIGH BLEND
L : SL16
L : KTF–2010
L : STANDBY
L : MUTE ON
1 5 0 5 8 2 9 9 4
H : TUNING
L : WIDE
L : ON
H : ANT B
H : ANT A
H : LED ON
H : LED ON
H : LED ON
H : LED ON
m
co
9 9
2 8 9 9
7