6-4. Ic Pin Function Description - Sony D-E700 Service Manual

6-4. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC801 MC68HC05L24-SC440440CFU (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 HPPWR
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
34 XRSM
35 OPEN
36 WP
37 XLT
38 XSOE
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)
Back light control signal output to the liquid crystal display on the switch unit
O
"H": back light on Used for the D-E800 and D-E805 models only
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 MPC18A26 (IC401) "L": charge on
O Serial data output to the liquid crystal display with remote commander
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 MPC18A26 (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
O Power on/off control signal output to the MPC18A26 (IC401) "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 external device "L": reset
I HOLD switch (S804) input terminal "L": hold on, "H": hold off
Rechargeable battery pack detection switch input terminal "L": rechargeable battery pack in
I
Not used (open)
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
CD door open/close detection switch (S801) input terminal
I
The stop status is reset with the falling edge of input signal
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)
O Serial data output enable signal output terminal (for ESP) Not used (fixed at "H")
Function
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