Ic Pin Function Description - Sony CDX-605 Service Manual

7-8. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC302 CXP84124-078Q (SYSTEM CONTROLLER)
Pin No. Pin Name
1 LIM.SW
2 BUSON
3 EJECT
4 LOAD1
5 LOAD2
6 A.MUTE
7 EMPH
8 CH.R
9 CH.F
10
11 ELV.R
12 ELV.ON
13 CD RST
14 CDON
15 to 23
24 AUTO ON/OFF
25 to 29
30 RESET
31 EXTAL
32 XTAL
33 VSS
34
35 TEX
36 AVSS
37 AVREF
38 ATRIBT
39 MCK
40 EHS
41 H.TEMP
42
43 MODE1
44 MODE2
45 MODE3
46, 47
48 SCK
49
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I/O
Sled limit in detect switch (SW1) input terminal
I
"L": When the optical pick-up is inner position
I Bus on/off control signal input from the SONY bus interface (IC204) "H": bus on
I Eject switch (SW303) input terminal "H" active
Save end detect switch (SW12) input terminal
I
"L": When completion of the disc chucking operation
Chucking end detect switch (SW11) input terminal
I
"L": When completion of the disc chucking operation
O Audio line muting on/off control signal output terminal "H": muting on
O Emphasis mode output to the D/A converter (IC401) "L": emphasis on
Motor drive signal (save direction) output to the chucking motor drive (IC52)
O
"H" active *1
Motor drive signal (load chucking direction) output to the chucking motor drive (IC52)
O
"H" active *1
— O Not used (open)
Motor drive signal (elevator down direction) output to the elevator motor drive (IC301)
O
"L" active *2
O Mechanism deck section power supply on/off control signal output "H": power on
System reset signal output to the CXA1992AR (IC11), CXD2530Q (IC101) and SM5852FS
O
(IC102) "L": reset
O D/A converter and servo section power supply on/off control signal output "H": power on
— O Not used (open)
Setting terminal for the automatic adjustment "L": automatic adjustment, "H": manual
I
adjustement (solder across the BP302 terminal) Normally: fixed at "L"
— O Not used (open)
System reset signal input from the reset signal generator (IC202) and SONY bus interface
I (IC204) "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Main system clock input terminal (8 MHz)
O Main system clock output terminal (8 MHz)
— Ground terminal
TX O Sub system clock output terminal Not used (open)
I Sub system clock input terminal Not used (fixed at "L")
— Ground terminal (for A/D converter)
I Reference voltage (+5V) input terminal (for A/D converter)
I Selection input of the custom file, D-BASS, etc.
Input of signal for the fine adjustment (linear position sensor adjustment; RV301) of elevator
I
position (A/D input)
I Elevator height position detect input from the RV302 (elevator height sensor) (A/D input)
I High temperature sensor input terminal Not used (open)
— O Not used (open)
O D-BASS control signal output to the SM5852FS (IC102)
O D-BASS control signal output to the SM5852FS (IC102)
O D-BASS control signal output Not used (open)
— O Not used (open)
I Serial data transfer clock signal input from the SONY bus interface (IC204)
SI I Serial data input from the SONY bus interface (IC204)
Function
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