Texas Instruments SCANSTA112
The SCANSTA112 extends the IEEE Std. 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. Each SCANSTA112 supports up to 7 local IEEE1149.1 scan chains which can be accessed individually or combined serially.| Part No. | SCANSTA112 |
|---|---|
| Datasheet | SCANSTA112 Download |
| Manufacturer |  Texas Instruments |
| Description | 7-Port Multidrop IEEE 1149.1 Multiplexer |
| Buy | Stock & Price |
FEATURES
1●2 True IEEE 1149.1 Hierarchical and Multidrop Addressable Capability
● The 8 Address Inputs Support up to 249 Unique Slot Addresses, an Interrogation Address, Broadcast Address, and 4 Multi-Cast Group Addresses (Address 000000 is Reserved)
● 7 IEEE 1149.1-Compatible Configurable Local Scan Ports
● Bi-directional Backplane and LSP0 Ports are Interchangeable Slave Ports
● Capable of Ignoring TRST of the Backplane Port when it Becomes the Slave.
● Stitcher Mode Bypasses Level 1 and 2 Protocols
● 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 be Enabled with a Single Instruction to Conveniently Buffer the Backplane IEEE 1149.1 Pins to Those on a Single Local Scan Port
● General Purpose Local Port Pass Through Bits are Useful for Delivering Write Pulses for Flash Programming or Monitoring Device Status.
● Known Power-Up State
● TRST on all Local Scan Ports
● 32...
