6-4. Ic Pin Function Description - Sony D-ES51 Service Manual

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6-4. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC801 MC68HC05L24-SC440463CFU (SYSTEM CONTROLLER)
Pin No. Pin Name
1 VDD
2 XSLDON
3 XBBSW
4 OE
5
VCCMNT
6
—
7 LIGHT
8 ESPO
9 DACLT
10 C2POEN
11 CHGON
12 RMDAT
13 VLCD3
14 VLCD2
15 VLCD1
16 VSS
17 VPP
18
TON
19
TE XOSC2
L 13942296513
20
RESET
21
OSC1
22 OSC2
23
SUBQ
24
CDATA
25
SQCK
26 RW
27 PCON
28 AMUTE
29 XAVLS
30 XRST
31 XHOLD
32 XRCHG
33 XLMT
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34 XRSM
35 OPEN
.
36 WP
37 XLT
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I/O
— Power supply terminal (+3V)
O Sled servo muting control signal output terminal "H": sled servo muting on
O Bass boost selection signal output to the headphone amplifier (IC302)
O
Output enable signal output to the MPC17A51VMEL (IC504) "L" active
I Main DC/DC converter voltage (+2.75V) monitor input (A/D input)
O Not used (open)
Liquid crystal display back light on/off control signal output terminal
O
"H": back light on Not used (open)
O Control signal output to the ESP (Electronic Shock Protection) circuit Not used (open)
O
Serial data latch pulse signal output to the D/A converter (IC301)
O C2PO (error condition monitor) signal control output terminal "L": stop mode, "H": searching
O Charging on output to the MPC18A26VMEL (IC401) "L": charge on
O Serial data output for the liquid crystal display Not used (open)
O
O Power supply output for the liquid crystal display bias
O
— Ground terminal
— Power supply terminal (0V)
O Traverse on/off control signal output to the auto traverse circuit
O Standby control signal output to the headphone amplifier (IC302)
System reset signal input from the MPC18A26VMEL (IC401) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I Main system clock input terminal (4.195 MHz)
O Main system clock output terminal (4.195 MHz)
I Sub-code Q data signal input from the BU9325KS (IC502)
O Serial data output to the D/A converter (IC301) and BU9325KS (IC502)
Sub-code Q data reading clock signal output to the D/A converter (IC301) and BU9325KS
O
(IC502)
Data read/write selection signal output to the BU9325KS (IC502)
O
"L": reading mode, "H": writing mode
Power on/off control signal output to the MPC18A26VMEL (IC401)
O
"L": power on, "H": power off
O Analog muting on/off control signal output terminal "H": muting on
AVLS (Automatic Volume Limiter System) switch (S301) input terminal
I
"L": normal mode, "H": limit mode
O System reset signal output to the BU9325KS (IC502) "L": reset
I HOLD switch input terminal "L": hold on, "H": hold off Not used in this set
Rechargeable battery pack detection switch (S901) input terminal
I
"L": rechargeable battery pack in
Sled limit-in detection switch (S901) input terminal
I
The optical pick-up is inner position when "L"
I RESUME switch (S803) input terminal "L": resume on, "H": resume off
x ao CD door open/close detection switch (S801) input terminal "H": CD door open u163
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I
The stop status is reset with the falling edge of input signal
i
Wake-up control signal input terminal
I
The stop status is reset with the falling edge of input signal
O Serial data latch pulse signal output to the D-RAM controller (IC601) (for ESP)
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
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.
– 33 –
9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
9 9