Sony Walkman WM-EX618 - IC Pin Function Details

5-7. IC PIN FUNCTION
iC701 SYSTEM CONTROL IC (MSM6576)
[PinNo | PinNeme [vO [WT [ACT SSS
P_1[wororcm. [0 | 1 | A | Marconrotounipin =MOTORON
|MororpIR | o | L | H | Motor rotating direction control. “L”=Forward direction, “H”=Reverse direction.
|MOTORBRK | o | L | H Motor brake control. “H”=BRAKE ON.
reset | — | — |W | Resetpin. “H=RESET,
ry
[test2, (ass | - «| CK Test pin (Fixed at “L”)
7 Test pin (Fixed at “L”)
MD condition check. “H”=FWD SW ON.
MD condition check. “H”=FF SW ON.
MD condition check. “H”=REW SW ON.
PREVSW |
REV SW MD condition check. “H”=REV. SW ON.
Not used.
1
1
12
13
14 Not used.
0
1
5
Connected to crystal oscillator. (32.768 kHz)
Connected to crystal oscillator. (32.768 kHz)
1.5V power supply
VSS1
XXT
oe)
Z 7]
oosts power supply voltage.
Boosts power supply voltage.
VSS2 Boosts power supply voltage.
Boosts power supply voltage.
Connected to hole element detected by rotation.
J
‘MODE
AMP CTL
MUTE CTL
35 F/R CTL
40
4]
2
Connected to hole element detected by rotation.
Operation button signal input pin.
|
Connected to 1.5V.
BEEP signal output pin.
“H”=SHUT OFF MODE, “L”=ENDLESS MODE (BL. SKIP ON)
“H”=MD FWD on A side, “L”=MD FWD on B side.
Not used.
tH ee wm
|
Not used.
Booster and amplifier power supply control. “H”=AMP ON.
Muting control. “L”=MUTE ON.
Not used.
Head selection. “H”=FWD, “L”=REV.
Not used.
LED operation. “H”=Lights. (OFF when LOW BATT.)
Not used.
16
17 -
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
w&
© i
|
VDD 1.5V power supply
Reversible motive motor input terminal for loosening process. “L”=STOP
Initializing micro computer. “H”=TC, “L”=CF (Fixed at “H”)
With/No sound input pin. “H”=With sound.
With/No tape detection. “H”=NO TAPE (returned to OFF+A side when taken out.)
Motor rotation speed control output. “L”=Normal.