DE100i-A100 User's Guide - Rev. C02
StorCase Technology, Inc.
Installation
13
Table 2: AT/IDE Interface Signals
The I/O connector (J2) pin assignments are as follows:
I/O Connector J2
Pin
Signal
I/O
Pin
Signal
I/O
01
Host Reset-
O
02
Ground
03
Host Data 7
I/O
04
Host Data 8
I/O
05
Host Data 6
I/O
06
Host Data 9
I/O
07
Host Data 5
I/O
08
Host Data 10
I/O
09
Host Data 4
I/O
10
Host Data 11
I/O
11
Host Data 3
I/O
12
Host Data 12
I/O
13
Host Data 2
I/O
14
Host Data 13
I/O
15
Host Data 1
I/O
16
Host Data 14
I/O
17
Host Data 0
I/O
18
Host Data 15
I/O
19
Ground
20
Key
No Pin
21
DMARQ
O
22
Ground
23
DIOW-
O
24
Ground
25
DIOR-
O
26
Ground
27
Reserved
28
Reserved
29
Reserved
30
Ground
31
IRQ 14
I
32
Host IO16-(AT)
I
33
Host ADDR 1
O
34
PDIAG- (16)
Notes
35
Host ADDR 0
O
36
Host ADDR 2
O
37
Host CS0-
O
38
Host CS1-
O
39
DASP-
Notes
40
Ground
- Indicates an active-low signal.
Signal direction is with respect to the host.
"I" indicates
To
the host
"O" indicates
From
the host
The /PDIAG and /DASP signals are used for communication between master, slave, and the
host.
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