Sharp DX-361HM Service Manual page 52

®
IC4 RH- iX1812UFZZ (ZC99698P)
Pin Terminal
I/o
Description
No. Name
1 RESET I Reset input
2 IRO I Power on: Microcomputer initial input
3*
NC
-
No operation
4 DaDS
0
Subcode data, OK
=
"H", NG
=
"L"
5 Si/RD
I/o
Focus servo start input/focus servo
READY output
6 SWAB/SSM
0
Spin motor control signal
7-10 B3-BO 0 Radial servo control output
11 REin 0 Radial error output
12 ORA
I/o
0 data request output "l"/O data
acknowledge input
13 OCl 0
When
ORA is in "l" level: Data
clock output
14 ODA I O data input
15
1
2 C
0
Display data, clock output
16 MUTE 0 MUTE indication output to SAA731 0
17 MUSB 0 MUTE output
18*
ATSB
- Digital filter control signal output
19*
CD ROM SW Digital filter control signal output
20 VSS
-
Ground
Pin Terminal
I/o
Description
No.
Name
21 TRY 0
TRY STOP: 2.5V, TRY-OPEN: OV,TRY-
CLOSE: 5V
22*
EN
-
No operation
23
-
0 Power on: Microcomputer initial output
24 1
2D
0 Display data output
25-28
KBSC3-
I/o
Key matrix
KBSC5
29
-
- No operation
30
-
-
No operation
31 MC I Spin motor control pulse input
32 KBSC5
I/o
Key matrix
33 TRYSW
I Tray SW input
34 REdig I Radial error input
35 TCMP 0 8-cm disc playback: "H"
36 Tl
I
Tracking loss input
37*
TCAP I Tracking loss input
38 XTAl2 0 Clock output
39 XTAL1
I Clock input
40 Vcc
-
Power terminal
In this unit, the terminal with asterisked mark (*) is (open)
terminal which is not connected to the outside.
-56-