Patent ID: 7610536

Claim:
An integrated circuit comprising: A. plural TAPs, each having a TDI, TDO, TMS, select output, and enable input lead; B. TDI, TDO, TMS, and TCK terminals coupled with the respective TDI, TDO, TMS, and TCK leads; and C. an embedded controller having TDI, TDO, TMS, and TCK leads coupled with the respective TDI, TDO, TMS, and TCK terminals, and having a separate select input lead and a separate enable output lead connected respectively to the select output lead and enable input lead of each TAP, and the embedded controller being responsive to a communication on the TDI, TMS, and TCK terminals to enable a TAP for access via the TDI, TDO, TMS, and TCK terminals.