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Integration method for mixed signal devices

IP.com Disclosure Number: IPCOM000238905D
Publication Date: 2014-Sep-24
Document File: 5 page(s) / 436K

Publishing Venue

The IP.com Prior Art Database

Abstract

IP based SoC (System on Chip) design method has been one popular and important method. Mixed signal SoC has been main-stream because more features are integrated into one single chip. However, the correct integration of the generated architectures or components in a design implies complex verification and design problems. Since IPs are heterogeneous, the design of communication interfaces between them is more and more difficult. And there are many mixed signal IPs embedded in the current complex SoC. But there are no good integration tools that could handle mixed signals integration well. The article introduces one integration method to do the mixed signals integration more efficiently.

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Integration method for mixed signal devices

ABSTRACT

IP based SoC (System on Chip) design method has been one popular and important method. Mixed signal SoC has been main-stream because more features are integrated into one single chip. However, the correct integration of the generated architectures or components in a design implies complex verification and design problems. Since IPs are heterogeneous, the design of communication interfaces between them is more and more difficult. And there are many mixed signal IPs embedded in the current complex SoC. But there are no good integration tools that could handle mixed signals integration well. The article introduces one integration method to do the mixed signals integration more efficiently.

KEYWORDS

IP-XACT, Mixed-signal, check, integration

1.     INTRODUCTION

SOC design is based on the reuse of Intellectual Property (IP). Designer's attempts such as flexibility, cost constraints, high performance and time to market can thus be helpfully managed. However, the correct integration of the generated architectures or components in a design implies complex verification and design problems. Since IPs are heterogeneous, the design of communication interfaces between them is more and more difficult.

And there are many mixed signal IPs embedded in the current complex SOC. But there are no good integration tools that could handle mixed signals integration well. Because the IP-XACT (an XML format that defines and describes electronic components and their designs.) doesn’t support mixed-signals interface definition, we also couldn’t finish the mixed-signals connection efficiently and correctly based on IP-XACT integration tool.

2.     WHAT IS THE MOTIVATION?

The authors have met some problems with current integration tools based on IP-XACT standard.

(a)    Current EDA tools cannot support analog signals integration well. The tool cannot identify INOUT signals, so that many faked error information about INOUT signals is reported in logfile.

Ÿ  Designers have to spend much time in checking the huge logfile line by line.

Ÿ  The tool cannot identify INOUT signals, and report ERROR always, which make designer confused.

Ÿ  Some real bugs are hidden in the faked error reports and may be missed.

(b)   For the different voltage domain signals connection, we will create a level-shift or isolation glue module by hand, which can simplify the CPF creation a lot. In previous design flow as Fig 1 shows, we should wait for BE’s LP-LEC check results, and remind us some different voltage domain signals missed in the glue module, and then we modify the glue. This flow will also result in low integration efficiency.

Fig 1. Previous CPF/UPF design flow

3.     Integration method for mixed si...