Preparation for Use
iSBX 350
Table 2-3. Connector Jl Pin Assignments
Pin
Signal
Pin
Signal
1
Ground
2
PORT B - BIT 7
3
Ground
4
PORT B - BIT 6
5
Ground
6
PORT B - BIT 5
7
Ground
8
PORT B - BIT 4
9
Ground
10
PORT B - BIT 3
11
Ground
12
PORT B - BIT 2
13
Ground
14
PORT B - BIT 1
15
Ground
16
PORT B - BIT 0
17
Ground
18
PORT C - BIT 3
19
Ground
20
PORT C - BIT 2
21
Ground
22
PORT C - BIT 1
23
Ground
24
PORT C - BIT 0
25
Ground
26
PORT C - BIT 4
27
Ground
28
PORT C - BIT 5
29
Ground
30
PORT C - BIT 6
31
Ground
32
PORT C - BIT 7
33
Ground
34
PORT A - BIT 7
35
Ground
36
PORT A - BIT 6
37
Ground
38
PORT A - BIT 5
39
Ground
40
PORT A - BIT 4
41
Ground
42
PORT A - BIT 3
43
Ground
44
PORT A - BIT 2
45
Ground
46
PORT A - BIT 1
47
Ground
48
PORT A - BIT 0
49
Ground
50
Optional
*
*
Optional
=
+5V or GND or External Interrupt input; reference paragraph 2-10 for caution.
Table 2-4 contains a listing of some of the details for
compatible connectors that may be user-supplied to
interface to the JI connector on the Multimodule
board.
2-10.
JUMPER CONFIGURATION
The Multimodule board contains 26 wirewrap posts
(EI through E26). These may be user-configured to
provide the flexibility needed to support all three
modes of operation of the PPI. Table 2-5 lists the
functions of each jumper.
Port Enables. Each of the Port
C
I/O lines
contains enable/disable jumper options (E7-EI4
and EI9-E26). Additional jumpers (EI5-EI8) pro-
vide ability to input or output four other signals
(MINTRO, MINTRI, OPTO, OPTI) via Port C; thus
the user can buffer these signals to the interface.
Interrupt/Options. E6 provides a convenient
method to send the MINTRO, MINTRI, OPTO, or
2-4
OPTI signal to pin 50 of the JI connector. E6 may
also be jumpered to +5 volts when the application
dictates. Reference to table 2-5.
If E6 is wired to +5V, ensure that the
connector is installed properly onto JI; the
+5V signal must always interface to pin 50
of Jl. Failure to do so could result in damage
to the terminator/driver devices in XUI
through XU6.
Driver Control. E2 provides direction control for
the bidirectional bus drivers, and may be jumpered
to EI or any of the Port
C
control lines.
The schematic drawing of the Multimodule board
(reference figure 5-2) shows the "as shipped"
configuration of the jumpers, including connections
from EI to E2, E7 to E8, E9 to EIO, Ell to E12, El3 to
E14, E19 to E20, E21 to E22, E23 to E24, and E25 to
E26.
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