Connecting IP Blocks
Is there a standard way to hook up specifically low-power IP blocks today? For all intents and purposes, no.
Before even talking about IP interoperability in terms of power, Philippe Magarshack, general manager of central CAD and design solutions at STMicroelectronics asserted those IPs must be hooked up correctly functionally and in a productive and safe way.
He said ST is forging ahead in this area and is relying on the IP-XACT standard, which is an additional view put on each of the IPs to capture the interface of the IP. It captures the registers when it is an IP that is visible by the software enabling address map automation. “Eventually this enables the hooking up of the IPs on a system bus, for instance. It is not as mature as deployed as System C is for an individual IP, so that’s the next step that we need to make happen. Once we do that we can start thinking about power interaction and power modeling of the IP and as a consequence interacting between those IPs in the power domain.”
More specifically, IP-XACT is an XML format that defines and describes electronic components and their designs. It was created to enable automated configuration and integration through tools.
According to the group, the goals of the standard are to ensure delivery of compatible component descriptions from multiple component vendors; to enable exchanging complex component libraries between EDA tools for SoC design; to describe configurable components using metadata, and to enable the provision of EDA vendor-neutral scripts for component creation and configuration. It was approved as IEEE 1685-2009 on December 9, 2009.
What’s not clear are specifics on low power in IP-XACT. Feel free to chime in with comments. I’m interested to hear from those in the engineering community using the standard.
–Ann Mutschler
Tags: IP integration, IP-XACT
October 7th, 2010 at 11:37 am
IP-XACT doesn’t have any standard provision for capturing power information. The IPXACT technical committee has been reformed under Accellera recently and are going through a rapid requirements gathering session so if anyone is interested in championing power extensions then…… get on to Accellera quickly! I did an IPXACT survey recently and people thought that power extensions are an important part of the evolution of the standard. It will be interesting to see how both UPF (Unified Power Format) and IP-XACT will evolve as they are both under Accellera.–Dave Murray