Texas Instruments USB I²C Interface Board I2C-CPEV/NOPB I2C-CPEV/NOPB Scheda Tecnica

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User's Guide
SNVA343A – April 2008 – Revised April 2013
AN-1840 USB I
2
C Interface Board Reference Manual
This application note discusses the features, requirements, and usages of the USB I
2
C Interface board.
Contents
1
Introduction
..................................................................................................................
2
USB I
2
C Interface Board Key Features
..................................................................................
3
Block Diagram
...............................................................................................................
4
System Requirements
......................................................................................................
4.1
Hardware Requirements
..........................................................................................
5
Serial Interface and Programming Connectors
.........................................................................
5.1
Serial Interface “J”
.................................................................................................
5.2
Electrical Characteristics of I
2
C
..................................................................................
6
I
2
C Compatible Interface
...................................................................................................
6.1
I
2
C Signals
..........................................................................................................
6.2
I
2
C Data Validity
....................................................................................................
6.3
I
2
C Start and Stop Conditions
....................................................................................
6.4
Transferring Data
..................................................................................................
List of Figures
1
Block Diagram
...............................................................................................................
2
USB I
2
C Interface Module
..................................................................................................
3
I
2
C Signals: Data Validity
...................................................................................................
4
START and STOP Conditions
.............................................................................................
5
I
2
C Chip Address
............................................................................................................
6
I
2
C Write Cycle
..............................................................................................................
7
I
2
C Read Cycle
..............................................................................................................
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1
SNVA343A – April 2008 – Revised April 2013
AN-1840 USB I
2
C Interface Board Reference Manual
Copyright © 2008–2013, Texas Instruments Incorporated