Ic Pin Function - Sony WALKMAN WM-EX610 Service Manual

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6-5. IC PIN FUNCTION

• MAIN BOARD IC701 ML63512-127TBZ060 (SYSTEM CONTROL)
Pin No. Pin Name
1 N.C.
2 FWD SW
3 CENTER SW
4 REV SW
5 CASSETTE SW
6 DATA/RMUM
7 REVIVE CTL
MEGA BASS
8
CTL
9 F/R CTL
10 BOOST CTL
11 AMP CTL
12 MUTE CTL
13 SET STOP1
14 SET STOP2
TE
L 13942296513
15 BATT DET
16 KEY IN
17 PM CTL
18 PHOTO CTL
19 LED BATT
20 DOLBY CTL
21 VDD1
22 VSS
23 VDD
24 VDDH
25 CB1
26 CB2
27 VDDL
28 XT0
29 XT1
30 TAT1B
31 TAT2B
32 OSCM
33 OSC0
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34 OSC1
35 RESET
.
36 BEEP
37 IN PHOTO
38 AVLS CTL
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I/O
– Not used
I Detection switch (S701) input terminal "L": FWD
I Detection switch (S701) input terminal "L": CENTER
Detection switch (S701) input terminal "L": REV
I
Cassette detection switch (S901-1) input terminal
I
"L": with cassette "H": without cassette
Serial data output of communication with the remote commander having phone, and the remote control sensing
I/O
signal input from remote commander having phone
Tone selection signal output to TA2123F (IC301)
O
"L": REVIVE "H": OFF/MEGA BASS/GROOVE
Tone selection signal output to TA2123F (IC301)
O
"L": MEGA BASS "H": OFF/REVIVE/GROOVE
O FWD/REV selection signal output to TA2123F (IC301) "L": FWD "H": REV
O Bass boost control signal output to TA2123F (IC301) "L": OFF "H": ON
Power supply ON/OFF control signal output to TA2123F (IC301)
O "L": power supply OFF "H": power supply ON
(The power supply ON/OFF control of Dolby NR amplifier (IC302) is performed.)
Power mute control signal output to TA2123F (IC301)
O
"L": mute ON "H": mute OFF
I Battery voltage detection input terminal when the machine is stopped. (A/D input)
I Reference voltage input terminal when the machine is stopped. (A/D input)
I Battery voltage detection input terminal (A/D input)
I Key input terminal (A/D input)
O Plunger drive signal output "L": plunger ON
Control signal output to the rotation detection circuit of the capstan/reel motor
O
"L": rotation detection circuit ON
O LED (D703) drive signal output to BATT display "L": LED ON
Dolby ON/OFF control signal output to Dolby NR amplifier (IC302)
O
"L": Dolby NR, ON, H: Dolby NR OFF
– Power supply terminal for external interface (+2.5 V)
– Ground terminal
– Power supply terminal (+1.5 V)
– Step-up power supply terminal for back-up
– Terminal to which condenser for step-up power supply is connected
– Terminal to which condenser for step-up power supply is connected
– Power supply terminal for internal logic
– Terminal to which main system clock is connected (32.768 kHz)
– Terminal to which main system clock is connected (32.768 kHz)
I Test input terminal Normally, fixed to "H".
Test input terminal Normally, fixed to "H".
I
– Terminal to which external capacitor for oscillation is connected Not used in this machine (empty terminal)
Terminal to which resistance for high-speed CR oscillation (800 kHz) is connected Not used in this machine
I
(empty terminal)
Terminal to which resistance for high-speed CR oscillation (800 kHz) is connected Not used in this machine
O
(empty terminal)
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y
System reset signal input from the reset signal generator (IC703) "L": reset
I
"L" is input for several hundreds msec after power supply starts up, then "H" is input.
i
O Beep sound output to TA2123F (IC301)
I Rotation detection input of capstan/reel motor (M901)
O AVLS ON/OFF control signal output "L": AVLS OFF, "H": AVLS ON
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