Digital And Analog I/O Paddleboards; Digital I/O (Using Vl-Cbr-2005A X2) - VersaLogic Viper VL-EBX-38ECP Hardware Reference Manual

Digital and Analog I/O Paddleboards

Digital I/O (Using VL-CBR-2005A x2)

Two Microchip MCP23S17 digital I/O expander devices are used to provide thirty-two I/O lines.
The digital lines are grouped into two sets (per two devices) of 16-bit bi-directional ports. Within
each MCP23S17 device, the 16-bit I/O port functionality consists of two 8-bit ports, and can be
configured to operate in 8-bit or 16-bit mode and controlled by software. The digital I/O lines are
powered up in the input mode and make an excellent choice for industrial LVTTL interfacing.
All of the I/O pins support +3.3V signaling.
The Digital I/O interface connects to two CBR-2005 (Cable and Paddleboard Assembly) via the
J21 and J26 I/O connectors.
Table 28. Digital I/O Using VL-CBR-2005A 1
Pin
1 DIO1/DIO17
3 DIO3/DIO19
5 DGND
7 DIO6/DIO22
9 DIO8/DIO24
11 DIO9/DIO25
13 DIO11/DIO27
15 DGND
17 DIO14/DIO30
19 DIO16/DIO32
EBX-38 Hardware Reference Manual
Signal Description
Digital I/O
Digital I/O
Digital Signal
Ground
Digital I/O
Digital I/O
Digital I/O
Digital I/O
Digital Signal
Ground
Digital I/O
Digital I/O
Pin Signal
2 DIO2/DIO18 Digital I/O
4 DIO4/DIO20 Digital I/O
6 DIO5/DIO21 Digital I/O
8 DIO7/DIO23 Digital I/O
10 DGND Digital Signal Ground
12 DIO10/DIO26 Digital I/O
14 DIO12/DIO28 Digital I/O
16 DIO13/DIO29 Digital I/O
18 DIO15/DIO31 Digital I/O
20 DGND Digital Signal Ground
12
Description
56