Patent ID: 11906582
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An electrical device comprising;
(a) device terminals including functional input terminals, functional output terminals, a TDI input terminal, a TMS input terminal, a TCK input terminal, and a TDO output terminal;
(b) functional circuitry coupled to the functional input terminals and coupled to the functional output terminals;
(c) a first access port circuit having a data input coupled to the TDI input terminal, a control input coupled to the TMS input terminal, a clock input coupled to the TCK input terminal, a data output, and a first enable output;
(d) a second access port circuit having a data input coupled to the TDI input terminal, a control input coupled to the TMS input terminal, a clock input coupled to the TCK input terminal, a data output, and a second enable output; and
(e) an output control circuit having a first data input coupled to the data output of the first access port circuit, a second data input coupled to the data output of the second access port circuit, a first enable input coupled the first enable output, a second enable input coupled to the second enable output and a data output coupled to the TDO output terminal.