Sony CDX-2160 / EXCD-206 Service Manual ▷ View online
– 38 –
IC300 SM5877AM-E2
ATTENUATION COUNTER
FILTER PROCESSOR &
ATTENUATION PROCESSOR
NOISE SHAPER
PROCESSOR BLOCK
INPUT INTERFACE
PWN DATA
PRODUCE
BLOCK
TIMING
CONTROL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
MUTE
DEEN
CKO
DVSS
BCKI
DI
DVDD
LRCI
TSTN
TO1
AVDDL
LO
AVSS
RO
AVDDR
MUTE
XVDD
XTI
XTO
XVSS
DS
RSTN
MODE
ATCK
L
L
L
R
R
R
– 39 –
IC400 CXA1946AQ-T6
36
35
34 33
31
30
25
26
27
28
29
32
1
2
3
4
5
6
7 8 9 10 11
12
13
14
15
16
17
18
19
20
21
22
23
24
37
38
39
40
40
41
42
42
43
44
45
46
47
48
GAIN12
GAIN11
IN11
IN12
IN13
IN14
IN21
IN22
IN23
IN22
IN23
IN24
GAIN21
GAIN22
FNTO1
REO1
REO1
CE
CLK
CLK
DGND
GND
VCC
VCT
DATA
TIMER
REO2
FNTO2
GAIN13
4
LDLC1
LDHC1
INAO1
VRIN1
VOUT1
TIN1
TCLC1
TCLC11
TCLC12
TCO1
FDIN1
GAIN234
LDLC2
LDHC2
INAO2
VRIN2
VOUT2
TIN2
TCHC2
TCLC21
TCLC22
TCO2
FDIN2
LOUD
VOLUME
8dB STEP
VOLUME
1dB STEP
VCTBUFF
VCTBUFF
VCTBUFF
TONE
FADER
INPUT SW
LATCH
LATCH
CONTROL
ZCDET
SHIFT
REGISTER
45k
45k
VCTBUFF
VCTBUFF
VCTBUFF
VOLUME
1dB STEP
LOUD
INPUT SW
TONE
FADER
VOLUME
8dB STEP
– 40 –
4-6. IC PIN DESCRIPTION
• IC700 µPD17017GF-B23-3B9 (SYSTEM CONTROL)
• IC700 µPD17017GF-B23-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
CD SO/VOL DATA
O
CD serial data/electric volume serial data output pin
2
VOL CLK
O
Electric volume serial clock output pin
3
SENSE
I
CD sens signal input pin
4
MONO
O
Force monaural signal output pin
5
ACC
I
Accessory power (ACC) voltage detection pin
6
FOK
I
Focus OK signal input pin
7
CD-LAT
O
CD latch signal output pin
8
SQCKO
O
Sub code Q data read clock output pin
9
CD RST
O
CD reset signal output pin
10
SQ SI
I
Sub code Q data input pin
11
NC
—
Not used. (Connect to GND.)
12
SCOR
I
Sub code sync detection signal input pin
13
BUIN
I
Power for operation (BATT) voltage detection pin
14
CDMON
O
Mechanism deck section power supply control pin
15
ILL ON
O
Illumination power supply control pin
16
LD ON
O
Laser power ON/OFF control pin
17
FM/AM
O
FM/AM select pin
18
SEEKOUT
O
SEEK OUT signal output pin
19
PW-ON
O
System power supply control pin
20
LCL/DX
O
LOCAL/DX select pin
21
BEEP
O
Beep sound output pin
22
VOL CE
O
Electric volume serial chip enable output pin
23
LM EJ
O
Loading motor control pin (Eject direction)
24
LM LOD
O
Loading motor control pin (Loading direction)
25
MUTE
O
Audio mute signal output pin
26
FM IF
I
FM IF counter input pin
27
AM IF
I
AM IF counter input pin
28
NOSE SW
I
Front panel with/without detection input pin
29
SD/ST
I
During SEEK operation, station detection input pin.
30
VDD1
—
Power supply pin
31
VCOL
I
AM OSC signal input pin
32
VCOH
I
FM OSC signal input pin
33
GND
—
GND
34
XOUT
O
System clock output pin (4.5 MHz)
35
XIN
I
System clock input pin (4.5 MHz)
36
EO0
O
Charge pump output pin
37
EO1
—
Not used.
38
NC
—
Not used. (Fixed at “H”.)
39, 40
NC
—
Not used.
41
VDD2
—
Power supply pin
42
EMPH.O
O
De-emphasis control pin
43, 44
COM1, COM0
O
LCD common signal output pin
45
LCD29
—
Not used.
46 – 64
LCD28 – LCD10
O
LCD segment signal output pin
65
TEST SW(LCD9)
I/O
Test mode direct settig input/LCD segment signal output pin
66
BAND SW(LCD8)
I/O
Band select input/LCD segment signal output pin
– 41 –
Pin No.
Pin Name
I/O
Pin Description
67
LCD7
O
LCD segment signal output pin
68
AREA1 SW(LCD6)
I/O
Area select input/LCD segment signal output pin
69, 70
LCD5, LCD4
O
LCD segment signal output pin
71
SELF SW(LCD3)
I/O
SELF SW input/LCD segment signal output pin
72
IN SW(LCD2)
I/O
DISC IN SW input/LCD segment signal output pin
73
L SW(LCD1)
I/O
LIMIT SW input/LCD segment signal output pin
74
D SW(LCD0)
I/O
DOWN SW input/LCD segment signal output pin
75
KEY-RETURN
I
Key return signal input pin
76 – 78
AD2 – AD0
I
Key input pin (A/D input)
79
AMP MUTE
O
Power amplifier mute signal output pin
80
CD CKO
O
CD serial clock output pin
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