Click to expand full text
www.ti.com
SN54LVT8986, SN74LVT8986
3.3-V LINKING ADDRESSABLE SCAN PORTS MULTIDROP-ADDRESSABLE IEEE STD 1149.1 (JTAG) TAP TRANSCEIVERS
SCBS759E – OCTOBER 2002 – REVISED MAY 2007
FEATURES
• Members of the Texas Instruments (TI) Family of JTAG Scan-Support Products
• Extend Scan Access From Board Level to Higher Level of System Integration
• Three IEEE Std 1149.1-Compatible Configurable Secondary Scan Paths to One Primary Scan Path
• Multiple Devices Can Be Cascaded to Link 24 Secondary Scan Paths to One Primary Scan Path
• Simple (Linking Shadow) Protocol Is Used to Connect the Primary Test Access Port (TAP) to Secondary TAPs. This Single Protocol Is Used to Address and Configure the Secondary Scan Path.