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LC89512W Datasheet, PDF (3/5 Pages) Sanyo Semicon Device – CD-ROM Error Correction LSI with Built-In SCSI Interface
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Pin Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
Pin
DB7
VSS1
DBP
ATN
VSS1
BSY
ACK
VSS1
RST
MSG
VSS1
SEL
C/D
VSS1
REQ
I/O
VSS0
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
INT1
VSS0
VSS0
D0
D1
D2
D3
D4
D5
D6
D7
INT0
XTALCK
XTAL
VSS0
VDD
RA0
RA1
RA2
RA3
RA4
RA5
RA6
RA7
RA8
RA9
RA10
RA11
Type
B
P
B
B
P
B
B
P
B
B
P
B
B
P
B
B
P
B
B
B
B
B
B
B
B
O
P
P
B
B
B
B
B
B
B
B
O
I
O
P
P
O
O
O
O
O
O
O
O
O
O
O
O
LC89512W
SCSI connection
Type: I: Input pin, O: Output pin, B: Bidirectional pin, P: Power supply pin, NC: No connection pin
Function
SCSI connection
SCSI connection
SCSI connection
SCSI connection
SCSI connection
SCSI connection
SCSI connection
SCSI connection
SCSI connection
SCSI connection
Data buffer RAM data signals
These pins have built-in pull-up resistors.
SCSI block interrupt request signal output (set using a register)
Microprocessor data signals
These pins have built-in pull-up resistors.
Microprocessor interrupt request signal output
Crystal oscillator circuit input
Crystal oscillator circuit output
Data buffer RAM address signal outputs
Continued on next page.
No. 4852-3/5
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