User's Manual

HE920 Hardware User Guide
1vv0301014 Rev.9 – 2014-01-23
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1.4. Document Organization
This document contains the following chapters:
Chapter 1: “Introduction” provides a scope for this document, target audience, contact and
support information, and text conventions.
Chapter 2: “General Product Description” gives an overview of the features of the product.
Chapter 3: “HE920 Module Connections” deals with the pin out configuration and layout.
Chapter 4: “Hardware Commands” How to control the module via hardware
Chapter 5: “Power Supply” deals on supply and consumption.
Chapter 6: “Antenna” The antenna connection and board layout design are the most important
parts in the full product design
Chapter 7: “Logic Level specifications” Specific values adopted in the implementation of
logic levels for this module.
Chapter 8: “USB Port”
Chapter 9: “Serial Ports”
Chapter 10: “Audio Section Overview”
Chapter 11: “General Purpose I/O” How the general purpose I/O pads can be configured.
Chapter 12 “DAC and ADC Section” Deals with these two kind of converters.
Chapter 13: “Mounting the module on your board”
Chapter 14: “Application Guides”
Chapter 15: “Packing System”
Chapter 16: “Conformity Assessments Issues”
Chapter 17: “Safety Recommendations”
Chapter 18: “Document History”