Digital I/O Interface; External Connections - VersaLogic Python EBX-11 Reference Manual

Digital I/O Interface

The EBX-11 includes a 32-channel digital I/O interface. The digital lines are grouped as four 8-
bit bi-directional ports. Data direction and output driver type are configurable by software.
Input data can be inverted through register settings. Any I/O pin(s) can generate an interrupt on
change of state. All I/O pins use 3.3V signaling. As outputs, the I/O pins can source or sink
24 mA each.
Warning!
Damage will occur if the I/O pins are connected to 5V logic.
EBX-11 digital I/O ports are accessed through the SPI interface.
E C
XTERNAL ONNECTIONS
Digital I/O channels 0-15 are accessed via connector J5 on the EBX-11. Table 27 shows the
pinout of these channels to the CBR-4004 expansion board connected to J5.
Digital I/O channels 16-31 are accessed via connector J10 on the EBX-11. Table 28 shows the
pinout of these channels to the CBR-4004 expansion board connected to J10.
Note
Table 27 shows the pinout for Rev. 5.00 and later boards. See Table 6 for the
pinout of Rev. 4.xx and earlier boards.
J5
Pin
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Note: The CBR-4004 is a multipurpose board. The silkscreen label does
not necessarily indicate pin function.
EBX-11 Reference manual
Table 27: Digital I/O Connections – Channels 0-15
CBR-4004
Signal J5 Pin
Digital I/O 0 11
Digital I/O 1 12
Digital I/O 2 13
Digital I/O 3 14
GND 15
Digital I/O 4 16
Digital I/O 5 17
Digital I/O 6 18
Digital I/O 7 19
GND 20
Digital I/O 8 21
Digital I/O 9 22
Digital I/O 10 23
Digital I/O 11 24
Pushbutton Reset 25
Digital I/O 12 26
Digital I/O 13 27
Digital I/O 14 28
Digital I/O 15 29
GND 30
Interfaces and Connectors
CBR-4004 CBR-4004
Connector Pin (Label)*
J3 5 (IO9)
Digital IO 4 (IO10)
3 (IO11)
2 (IO12)
1 (GND2)
J4 5 (IO13)
Digital IO 4 (IO14)
3 (IO15)
2 (IO16)
1 (GND2)
1 (IO17)
J6
2 (IO18)
Digital IO
3 (IO19)
4 (IO20)
5 (GND3/PBRST#)
J7 1 (IO21)
Digital IO 2 (IO22)
3 (IO23)
4 (IO24)
5 (GND3)
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