User's Manual
Table Of Contents
- Foreword
- Important Safety Information
- Contents
- About this Document
- Related Publications
- Product Description
- Features
- Specifications
- Air Interface
- Product Functionality
- Contents
- Integration Goal and Objectives
- Customer Problem Isolation
- Wireline and Wireless Communications
- Design Tips for Serviceability
- Environmental Issues
- Regulatory Requirements
- Contents
- Power Supply
- Host Interface
- Power Management
- Antenna Systems
- Hardware Recommendations
- Battery Selection Criteria
- Contents
- Hardware Integration
- Application Software
- Final Assembly
- Installation
- Troubleshooting
- End User Problem Resolution
- Service Depot Repair
- Contents
- Accessories and Options
- Abbreviations and Acronyms
- Desense Overview
- Desense Measurement Techniques
- Preparing the Device Under Test
- Performance Goals
- Methods of Controlling Emissions
- Antenna
- Summary
- FLEX Application Protocol Licensing
- Licensing
4-4 July 23, 2002
Hardware Integration CreataLink2 XT Hardware Integrator’s Guide
Host Interface
I/O Pin Interface
The CreataLink2 XT device provides many features that you can configure to suit
the desired application. Such a configurable feature is the 8-bit parallel I/O port.
Six of the eight bits of this port are individually configurable as an open collector
output, or as an input. You can configure the remaining two bits as high current
driven outputs, or inputs. The desired configuration of this port is stored in
nonvolatile memory and is set upon power-up.
Maximum input voltage is specified as 12V for NUF3902 and 16V for NUF8006.
Maximum pull-up voltage is specified as 12V for NUF3902 and 16V for NUF8006.
The open collector outputs are capable of sinking 25 mA, and the driven outputs
are capable of sourcing/sinking up to 350 mA.
Table 4-1 shows a cross reference from signal name to corresponding pin number
on the 22-pin connector and each I/O pin’s potential functions.
High Voltage Input/Open Collector Output
Figure 4-2 is a view of the circuit and the relevant signals. The block on the right
reveals the necessary connections if the circuit is used as an open collector output.
If used as an input, there are no external component requirements.
19
HVIO_4
Open collector output/High voltage input
20
HVIO_5
Open collector output/High voltage input
21
HVIO_6
Open collector output/High voltage input
NUF8006 only: Input Capture 1
22
HVIO_7
Driven output/High voltage input
011210O
Figure 4-2. High Voltage Input/Open Collector Output Circuit
Table 4-1. 22-Pin Vertical Header Connector Pin Signals (Continued)
Pin
Number
Signal Name Description
LOAD
I/O Control
Low Voltage
Input/Output
Pull-up Voltage
Rpu
HVIO_0 -HVIO_5
CreataLink2 XT
Switching
and
Level
Shifting