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SCANSTA111 Datasheet Enhanced SCAN Bridge Multidrop Addressable IEEE 1149.1 Port

Manufacturer: Texas Instruments

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General Description

The SCANSTA111 extends the IEEE Std.

1149.1 test bus into a multidrop test bus environment.

The advantage of a multidrop approach over a single serial scan chain is improved test throughput and the ability to remove a board from the system and retain test access to the remaining modules.

Overview

SCANSTA111 www.ti.com SNLS060K – AUGUST 2001 – REVISED APRIL 2013 SCANSTA111 Enhanced SCAN Bridge Multidrop Addressable IEEE 1149.

Key Features

  • 1.
  • 2 True IEEE 1149.1 Hierarchical and Multidrop Addressable Capability.
  • The 7 Slot Inputs Support Up to 121 Unique Addresses, an Interrogation Address, Broadcast Address, and 4 Multi-Cast Group Addresses (Address 000000 is Reserved).
  • 3 IEEE 1149.1-Compatible Configurable Local Scan Ports.
  • Mode Register0 Allows Local TAPs to be Bypassed, Selected for Insertion Into the Scan Chain Individually, or Serially in Groups of Two or Three.
  • Transparent Mode can.

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