JVC UX-M55 Service Manual page 24

UX-M55
TMP87EP26F-1J15 (IC601) : MCU
1. Terminal layout
80
81
(Top view)
100
1
2.Pin function
Pin No. Symbol
1 VSS
2 XOUT
3 XIN
4 RESET
5 XTOUT(P22)
6 XTIN(P21)
7 TEST
8 SHIFT FREQ
9 REMOTE
10 MUTE
11 PLAY MUTE
12 REC MUTE
13 PLAY/REC
14 N.C.
15 N.C.
16 N.C.
17 REC SW (RVS)/(WAIT)
18 REC SW (FWD)
19 B-SOL+
20 B-MODE SW
21 VOL STB
22 POWER
23 B-HALF SW
24 JOG-B/VOL DATA
25 JOG-A/VOL CLK
26 RDS CLK
27 V MOTOR
28 B-PHOTO OUT
29 CD-RW
30 RES
1-24
51
50
31
30
I/O
- GND (0V)
O Resonator connecting pins for high clock(4-8MHz).
I For inputting external clock, XIN is used and XOUT is opened.
I/O Reset signal input or watchdog timer output/address-trap-reset output
I/O Resonator connecting pins for slow clock(32.768kHz)
I/O or general purpose I/O.
I Test pin for out-going test. Always fixed to low.
O Shift the crystal oscillation frequency to reduce tuner noise.
I Remote control signal input
O Audio mute output
O Muting output during play, not connect
O Muting output during recording, not connect
O Play or recording output, low for recording.
- Not connect
- Not connect
- Not connect
I Deck reverse record protection input. Low means can record on
reverse side.
I Deck forward record protection input. Low means can record on
forward side.
O Solenoid output for deck B.
I Mode switch input of deck B. Low means the head is up.
O TC9422F volume STB output
O Power output control
I Half switch input of deck B. Low means deck B have tape.
I/O Jog dial input and TC9422F volume data output
I/O Jog dial input and TC9422F volume clock output
I BU1923F(RDS demodulator) interface CLK input
O Motor output
I Reel pulse input of deck B. Have pulse input means the tape is rotating.
O CD-RW control output, not connect
O CD servo reset output
Function