Pin Description - Sony WM-EX900 Service Manual

6-4. IC PIN DESCRIPTION
• IC701 ML63512-117 (SYSTEM CONTROL)
Pin No. Pin Name
1 A/B SW
2 FWD SW
3 CEN SW
4 RVS SW
5 CASSETTE SW
6 DATA/RMUM
7 REVIVE CTL
8 MEGA BASS CTL
9 F/R CTL
10 BOOST CTL
11 AMP CTL
12 MUTE CTL
13 SET STOP1
14 SET STOP2
15 BATT DET
16 KEY IN
17 PM CTL
18 PHOTO (T) CTL
19 PHOTO (S) CTL
20 DOLBY CTL
21 VDD1
22 VSS
23 VDD
24 VDDH
25 CB1
26 CB2
27 VDDL
28 XT0
29 XT1
30 TEST1B
31 TEST2B
32 OSCM
33 OSC0
34 OSC1
35 RESET
36 BEEP
37 PHOTO (S) IN
38 PHOTO (T) IN
39 AMS IN
40 P SIG
41 MOTOR START
42 MOTOR DIR
43 CLRL 2
44 CLRL 1
45 MOTOR W
46 MOTOR V
47 MOTOR U
48 1/2
I/O
I Side A/B detection switch signal input. L: side A, H: side B
I MD mode switch (FWD) signal input. L: ON
I MD mode switch (CENTER) signal input. L: ON
I MD mode switch (RVS) signal input. L: ON
I Cassette with/without detection switch signal input. L: with, H: without
I/O Communication data signal output, Remote control with/without detection signal input.
O Tone select switch signal output. H: REVIVE, L: MEGA BASS/GROOVE
O Tone select switch signal output. H: MEGA BASS, L: OFF/GROOVE
O Head select signal output. L: FWD, H: RVS
O Tone select switch signal output. H: BOOST ON, L: OFF
O Audio circuit • DDC control signal output. H: POWER ON
O Audio muting control signal output. L: MUTE ON
I Set stop voltage signal input
I Set stop reference voltage signal input
I Power voltage detection signal input
I Operation switch signal input
I Plunger control signal output. L: ON
O Rotational detection intermittent signal output. (Take-up side) L: ON
O Rotational detection intermittent signal output. (Supply side) L: ON
O Dolby circuit control signal output. L: ON
— Power supply pin. (for external interface)
— Ground
— Power supply pin
— Backup increased voltage power supply pin
— Increased power supply capacitor connection pin
— Increased power supply capacitor connection pin
— Internal logic positive side power supply pin
I Crystal oscillator connection pin. (32.768 kHz)
O Crystal oscillator connection pin. (32.768 kHz)
I Test input pin. (Connect to power supply pin.)
I Test input pin. (Connect to power supply pin.)
— Not used. (Open)
I High speed CR oscillation (800 kHz) resistor connection pin
O High speed CR oscillation (800 kHz) resistor connection pin
I Reset signal input
O Beep signal output
I Rotational detection signal input
I Rotational detection signal input
I Music with/without detection (AMS) signal input. (External interruption) H: without
I Motor P-SIG signal input. (External interruption)
O Motor wake-up signal output. L: wake-up
O Motor rotational direction control signal output. H: CCW, L: CW
O Mode select signal output to Motor servo IC (IC601).
O Mode select signal output to Motor servo IC (IC601).
O Motor control signal output
O Motor control signal output
O Motor control signal output
O Motor speed 1/2 control signal output. L: 1/2 high speed, H: normally
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Pin Description