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-
DR-U 124X-7, DR-US 124X-6
4.
IC INFORMATION
•
The
information shown in the list
is basic
information and
may
not cor-
respond exactly to that shown in the schematic diagrams
.
•
LC89512W-V79
[IC801:
MOTHER BOARD
ASSY
(SCSI)~
• ROM
Decoder
•
Block Diagram
EXTER~~AL
DATA BUFFER
RAM
•
.
RAO-RA17
roo-ro
7
LC8'351 2W-V7'3
RCS ROE RWE
1- -
-
-
-~---_-___.__-_ -_- _-_-_-_-_-_-_-_-_-_-_-----'----
_-_-_- -
-
-
i
XTALCK
I
1'4---:L
I
I
I
LRCK
BCK
SDATA
C2PO
MCK
DRAM
I
/
F
BLOCK
I
D
-
-- -
--
~TAL
DB7-DBO
- -
DBP
_L_
-
,..
...
--..
-
-
BSY
CD
-DSP
-
CD-ROM
DECODER
BLOCK
-
~
SCS
I
l
/
F
BLOCK
ACK
HOST
- -
RST
COMPUTER
•
Pin Function
No.
Pin Name
110
-
1
DB7
110
2
Vssl
-
-
3
DBP
110
- -
4
ATN
5
Vssl
-
-
6
BSY
110
- -
7
ACK
8
Vssl
-
12
I
I
I
I
-
...
-
...
WFCK
EXCK
SBSO
''-----------'--
~
--·
[/0
- -
MSG
- -
SEL
A!N
-
C/D
I
SCOR
I
~-------------
-
------
- - - ·
_____ J
y
y -
- -
DO-D7
1
CS RD RS
_ _ _
Ir
WR
I
NT
SWA IT
MICRO
COMPUTER
Description
No.
Pin Name
110
Description
-
SCSI terminal
9
RST
110
SCSI terminal
- -
GND for SCSI I/F driver
10
MSG
11
Vssl
-
GND for SCSI llF
driver
SCSI terminal
-
12
SEL
110
SCSI terminal
GND
for
SCSI I/F
driver
13
CID
14
Vssl
-
GND for SCSI I/F driver
SCSI terminal
- -
15
REQ
110
SCSI terminal
GND for SCSI I/F driver
16
110
(
(
(
-
(
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