PC-SDD32H, 64H,
128H, 192H, 320H, 500H, 1000H
CONTEC CO., LTD.
- 4 -
Connector Pin Assignment
Pin
Signal
Function
I/O
Pin
Signal
Function
I/O
1
RESET-
Bus Reset
I
2
GND
Signal Ground
3
DB7
Data Bus Bit 7
I/O
4
DB8
Data Bus Bit 8
I/O
5
DB6
Data Bus Bit 6
I/O
6
DB9
Data Bus Bit 9
I/O
7
DB5
Data Bus Bit 5
I/O
8
DB10
Data Bus Bit 10
I/O
9
DB4
Data Bus Bit 4
I/O
10
DB11
Data Bus Bit 11
I/O
11
DB3
Data Bus Bit 3
I/O
12
DB12
Data Bus Bit 12
I/O
13
DB2
Data Bus Bit 2
I/O
14
DB13
Data Bus Bit 13
I/O
15
DB1
Data Bus Bit 1
I/O
16
DB14
Data Bus Bit 14
I/O
17
DB0
Data Bus Bit 0
I/O
18
DB15
Data Bus Bit 15
I/O
19
GND
Signal Ground
I/O
20
KEY
Key Pin
21
Open
22
GND
Signal Ground
23
IOW-
Host I/O Write
I
24
GND
Signal Ground
25
IOR-
Host I/O Read
I
26
GND
Signal Ground
27
IORDY
I/O ch RDY
O
28
Reserved
29
Reserved
O
30
GND
Signal Ground
31
INTRQ+ Interrupt Request
O
32
IOCS16-
Drive 16 Bit I/O
O
33
ADD1
Host Address 1
I
34
PDIAG-
Passed Diagnostic I/O
35
ADD0
Host Address 0
I
36
ADD2
Host Address 2
I
37
CSO-
Chip Select 0
I
38
CS1-
Chip Select 1
I
39
DASP-
Active (LED)
O
40
GND
+5V Return
41
+5V
+5VDC
42
+5V
+5VDC
43
GND
+5V Return
44
Reserved
Write Access Mean Time Before Failure
The PC-SDD H series accesses the same sector when overwriting a
file. If a write error occurs, a substitute sector is used (290
substitute sectors are provided).
Accordingly, the mean time before failure for write access is the
time until all of the substitute sectors are used up.
The calculation formula is different depending on whether the size
of the file being written to is less than or greater than 32MB.