JVC NX-MD1R Service Manual page 64

NX-MD1R/NX-MD1
UPD780024AGKB21 (IC251) : Unit micon
1. Pin layout
64 ~ 49
1
~
16
17 ~ 32
2. Pin function (1/2)
Pin
Symbol
No.
-
1
-
2
3 MCS
4 MRDY
5 CDINDEX
6 CDEMP
7 CDTNO
8 CDCOPY
9 VSSO
10 VDDO
-
11
-
12
-
13
14 MUTE
15 SUBQ
-
16
17 SQCK
18 KCMND
19 MSTAT
20 KCLK
21 RXDO
22 TXDO
-
23
24 VDD1
25 AVSS2
26 KEY1
27 KEY2
28 PCHK
-
29
-
30
31 /OPEN
32 /REST
1-64
48
~
33
I/O Function
- Connect to GND
- Non connect
Synchronization/asynchronus system
O
Reday signal input terminal
-
O
CD emphasis
O
CD track No. change
I
CD copy right or wrong
O
Connect to GND
-
Power supply
-
Non connect
-
Non connect
-
Non connect
-
Mute signal input
I
Sub Q data input
I
Non connect
-
O Sub Q clock output
Reset signal input
I
Not use
O
Command data clock input
I
(Command in)
I
O (Status out)
- Connect to GND
- Power supply
-
Connect to GND
Key1 signal from running jig
I
Key2 signal from running jig
I
I
Connect to GND
-
- Connect to GND
I
I