Introduction
CP381
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© 2002 PEP Modular Computers GmbH
ID 24107, Rev. 01
1.2
Product Overview
The CP381 Digital Input controller is part of a comprehensive concept whose goal is to provide
CompactPCI system integrators with a complete range of CompactPCI I/O products which in-
clude the functions of analog input, analog output, digital input and digital output implemented
on separate individual boards. This concept ensures the maximum degree of system design
flexibility thus allowing for the efficient and effective usage of available resources.
The CP381 is a 3U/4HP CompactPCI board which provides 30 digital input channels and has
some useful optional features (such as debouncing, input event detection, input capture and-
compare).
The basic functions of this board are to provide interfacing to the application (process), perform
D/D signal conversion, and to make the raw digitized data available for further processing.
The major components involved in these processes are the front end (process side) Signal
Conditioning and the Digital Input Process and Communications (DIProcomm) Controller which
is realized within a Field-Programmable Gate Array ( FPGA). The DI ProComm controller is de-
signed to provide effective and efficient control of digital input signal conditioning as well as in-
terfacing with the CPCI system controller.
The following table provides a quick overview of the CP381 board.
Table 1-1: CP381 Product Overview
CP381 FEATURES
DESCRIPTION
Digital Input Board
CompactPCI: 3U, 4HP
33 MHz system clock
32-bit address and data bus
Designed for Plug&Play
Complies with the CPCI specification
Input Signals
Voltage range: low: -3V to +5V
high: +11V to + 30 V (+24V standard)
Maximum current: 5 mA
Output Data
A maximum of 30 measured digital values
Interrupt messages (optional)
Programmable registers (writeable compare, event and latch registers)
Debouncing
Range of settings available: 33 MHz, 128 kHz, 32 kHz, 8 kHz, 2 kHz, 500 Hz, 125
Hz, 31 Hz (30ns default)
Monitor and Control
Two green LED’s: RUN and HIT
DI ProComm controller
System Master driver software
