33
CT-IS21
• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
PDC059A (U-COM ASSY : IC2501)
• System Microcomputer
•
Pin Function
7.2 PARTS
7.2.1 IC
No. Pin Name I/O
Pin Function
No. Pin Name I/O
Pin Function
1
TIN
O
Loader mechanism motor close
25
POFF
I
AC input detection
2
SOL
O
Solenoid control
26
S.R/E
I/O System bus request
3
XMOTOR
O
Cassette mechanism motor control
27
S.DOUT
O
System bus output data
4
S.CLK
I
System bus clock
28
S.DIN
I
System bus input data
5
XRESET
I
Reset input
29
NC
−
Not used
6
E+5V
I
Connect to VDD
30
AM56
I
System 5.6 input
7
NC
−
Not used
31
XTEST
I
Test mode detection input
8
E+5V
I
Connect to VDD
32
POWER
O
Power control
9
GNDD
−
GND
33
LINEMUTE
O
Line mute control
10
6MHz
I
Connect a crystal resonator
34
LEDDATA
O
IC DATA output for LED control
11
6MHz
O
35
LEDCE
O
IC OK output for LED control
12
E+5V
−
Power 5V
36
LEDCLK
O
IC output for LED control
13
KEY1
I
AD key data input
37
PB MUTE
O
CLK (Not used)
14
KEY2
I
38
MODEL
I
Model switch input
15
MS
I
MS audio signal input
39
DOLBY
O
DOLBY NR control
16
SENSE
I
Sensing pulse input
40
XOPEN
I
Loader mechanism open SW control
17
XMODE
I
Cassette mechanism mode SW input
41
XCLOSE
I
Loader mechanism close SW input
18
NC
−
Not used
42
NC
−
Not used
19
XRECR
I
REV REC detection SW input
43
PB/XREC
O
DOLBY PB/REC control
20
XCrO
2
(SW)
I
CrO
2
position detection SW input
44
RECMUTE
O
REC MUTE control
21
XHALF
I
Tape detection SW input
45
XCrO
2
O
Normal / CrO
2
control
22
NC
0
Non connection
46
BIAS
O
BIAS control
23
XRECF
I
FWD REC detection SW
47
TOUT
O
Loader mechanism motor open
24
NC
−
Not used
48
NC
−
Not used
