Diagrams; Ic Pin Description - Sony CDX-3170 Service Manual

4-1. IC PIN DESCRIPTION

• IC800 µPD17017GF-B28-3B9 (SYSTEM CONTROL)
Pin No. Pin Name
1 CD SO/VOL DATA
2 VOL CLK
3 SENSE
4 ST/MONO
5 ACC
6 FOK
7 CD-LAT
8 SQCKO
9 CD RST
10 SQ SI
11 NC
12 SCOR
13 BUIN
14 CDMON
15 ILL ON
16 LD ON
17 FM/AM
18 SEEKOUT
19 PW-ON
20 LCL/DX
21 BEEP
22 VOL CE
23 LM EJ
24 LM LOD
25 MUTE
26 FM IF
27 AM IF
28 NOSE SW
29 SD/ST
30 VDD1
31 VCOL
32 VCOH
33 GND
34 XOUT
35 XIN
36 EO0
37 EO1
38 NC
39, 40 NC
41 VDD2
42 EMPH.O
43, 44 COM1, COM0
45 LCDSO
46 LCDCKO
47 LCDINH
48 LCDCE
49 – 64 LCD25 – LCD10
65 TEST SW
66 BAND SW
67 AREA2 SW
68 AREA1 SW
SECTION 4

DIAGRAMS

I/O
O CD serial data/electric volume serial data output pin
O Electric volume serial clock output pin
I CD sens signal input pin
O FM/AM select pin
I Accessory power (ACC) voltage detection pin
I Focus OK signal input pin
O CD latch signal output pin
O Sub code Q data read clock output pin
O CD reset signal output pin
I Sub code Q data input pin
— Not used. (Connect to GND.)
I Sub code sync detection signal input pin
I Power for operation (BATT) voltage detection pin
O Mechanism deck section power supply control pin
O Illumination power supply control pin
O Laser power ON/OFF control pin
O FM/AM select pin
O SEEK OUT signal output pin
O System power supply control pin
O LOCAL/DX select pin
O Beep sound output pin
O Electric volume serial chip enable output pin
O Loading motor control pin (Eject direction)
O Loading motor control pin (Loading direction)
O Audio mute signal output pin
I FM IF counter input pin (Not used in this set.)
I AM IF counter input pin
I Front panel with/without detection input pin
I During SEEK operation, station detection input pin.
— Power supply pin
I AM OSC signal input pin
I FM OSC signal input pin
— GND
O System clock output pin (4.5 MHz)
I System clock input pin (4.5 MHz)
O Charge pump output pin
— Not used.
— Not used. (Fixed at "L".)
— Not used.
— Power supply pin
O De-emphasis control pin
O Not used.
O LCD serial data output pin
O LCD serial clock output pin
O LCD blank display control output pin
O LCD chip enable output pin
O Not used.
I/O Test mode direct settig input
I/O Not used.
O Not used.
I/O Not used.
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Pin Description