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National Semiconductor Introduces Enhanced System Test Access Product for Telecom and Datacom Applications

National's SCANSTA111 Boundary SCAN Technology Allows System Partitioning and Efficient Access to Multiple Boundary Scan Chains for Faster Board and System Test and Reconfigurability of Programmable Devices

Oct 29, 2001

October 29, 2001 - National Semiconductor (NYSE: NSM) today announced the availability of its SCANSTA111, the industry's most powerful infrastructure support product for the IEEE 1149.1 standard for Boundary Scan Test. The IEEE 1149.1 standard is the industry benchmark for structural test access. National's SCANSTA111 is a system-level turnkey solution that makes IEEE 1149.1 printed circuit board test, system-level test, embedded FLASH programming, the configuration of Complex Programmable Logic Devices (CPLD), or microprocessor emulation faster, more flexible, and more efficient. National's SCANSTA111 is also the industry's only solution for backplane interconnect testing and the testing of card-to-card serial links. SCANSTA111 lets systems designers provide multidrop IEEE 1149.1 chains and selectable local 1149.1 chains to a single source.

National's SCANSTA111 is designed for use in telecommunications and data communications systems such as cellular base stations, network switches and routers, and multiplexers; it is also well suited for aerospace or industrial applications. These systems typically utilize the latest advances in electronic components and manufacturing techniques and often operate in remote locations with high "uptime" and reliability requirements. National' SCANSTA111 allows designers of these systems to build-in fast, reliable, low-cost test capability. In addition, embedded SCANSTA111 simplifies the configuration of FLASH memories or FPGA's in remotely deployed systems, reducing time and manpower on service calls for remote equipment.

"National's new SCANSTA111 extends our proven leadership in System Test Access products and technologies," said Brian Stearns, Marketing manager for System Test Access Products. "The SCANSTA111 lets DfT (design-for-test) teams strategically develop systems with integrated test and configuration capability. Over the system life this strategy can minimize production and maintenance costs while providing a way to perform system firmware upgrades and diagnostics remotely."

Key Features and Benefits
The SCANSTA111 architecture lets designers create a backplane test bus using only 5 signals. The device connects to the backplane test bus with a unique address and supports 3 local scan ports (LSP) in the silicon version. National's SCANSTA111 supports true IEEE 1149.1 multi-drop addressable capability that allows for partitioning of multi-card systems. This allows administrators to test an entire system or a portion of a system.  For maximum flexibility when addressing boards in a backplane, the 7-slot inputs support up to 121 unique addresses, an interrogation address, broadcast address and four multi-cast group addresses. 

National's SCANSTA111 provides a way to improve throughput and fault isolation, to add and remove cards without disrupting the test capability-all with a standardized approach that is supported industry-wide through the IEEE 1149.1 standard. The SCANSTA111 is fully supported by most of the major ATPG (Automated Test Program Generation) software vendors. The SCANSTA111 enables a multidrop architecture in systems with multiple boards, and supports partitioning of IEEE 1149.1 scan chains for better fault isolation, or more efficient programming/configuration. Using the SCANSTA111 in a multidrop configuration minimizes programming/configuration times, allows users to remove one or more boards from a system while still maintaining test access. In addition the SCANSTA111 supports testing of high speed card-to-card serial links as well as backplane interconnects across a system test bus

For maximum flexibility in system test access, SCANSTA111 supports three IEEE 1149.1-compatible configurable local scan ports. These may be bypassed, selected for insertion into the scan chain individually, or serially in groups of two or three. A Transparent Mode setting buffers the backplane IEEE 1149.1 pins to those on a single local scan port, which improves throughput after a single scan port is established.

Pricing and Availability
National's SCANSTA111 is available now in a 48-pin TSSOP package, a 48-pin BGA or as an Intellectual Property (HDL) model for embedding into VLSI devices. The SCANSTA111 is priced at $10.50 each in 1000-unit quantities. For further information on the SCANSTA111, visit National's website at www.national.com/pf/SC/SCANSTA111.html, or contact National's design support group at 1(800) 272-9959. A portable demonstration/development system showing examples of the SCANSTA111 supporting multidrop addressing, backplane interconnect test, and testing of card-to-card serial links is available from NSC subject to availability.

About National Semiconductor
National Semiconductor is the premier analog company driving the information age. Combining real-world analog and state-of-the-art digital technology, the company is focused on the fast growing markets for wireless handsets; information appliances; information infrastructure; and display, imaging and human interface technologies. With headquarters in Santa Clara, California, National reported sales of $2.1 billion for fiscal year 2001 and employs about 9,700 people worldwide.  Additional company and product information is available on the World Wide Web at www.national.com