Product category:
Design and Development Software
News Release from: Pulsic | Subject: Spine and stitch routing technology
Edited by the Electronicstalk Editorial
Team on 14 September 2007
Chip design method receives patent
Spine and Stitch is a linear routing style used to connect custom cells placed in channels or spine areas of memory.
Pulsic has been granted a patent by the US Patent Office for its spine-and-stitch routing technology The "Method of automatic shape-based routing of interconnects in spines for integrated circuit design", optimises the layout of long aspect ratio nets found in memory design and automates a previously manual process
This article was originally published on Electronicstalk on 28 Oct 2003 at 8.00am (UK)
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Developed as part of Pulsic's Unity suite, this solution builds on the shape-based advantage to routing complex topologies and delivers productivity improvements to designers of complex chips, especially those aimed at the memory segment.
Spine and stitch is a linear routing style used to connect custom cells placed in channels or spine areas of memory.
These routing areas are often found in the layout of peripheral logic for DRAM, SRAM and Flash memory, and are characterised by extreme aspect ratios, producing long and narrow routing footprints.
The spines are very long and the stitches are shorter orthogonal tracks which gridded routers are unable to guarantee.
Typically there are only two or two and a half layers of interconnect, the half layer being a highly resistive layer which requires extremely short connection lengths.
Spine routing is available as an option within UniRoute, the routing component of Unity, Pulsic's integrated physical design solution for custom design automation for memory.
Mark Waller, VP of Research and Development, explains "Our custom design automation solutions are bringing productivity gains in critical and complex design areas normally reserved for manual design".
"This is an important patent to protect the innovations that we have made in the core technology of our shape-based solution".
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