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The ’LVT8980A embedded test-bus controllers (eTBCs) are members of the TI broad family of testability integrated circuits. This family of devices supports IEEE Std 1149.1-1990 boundary scan to facilitate testing of complex circuit assemblies. Unlike most other devices of this family, the eTBCs are not boundary-scannable devices; rather, their function is to master an IEEE Std 1149.1 (JTAG) test access port (TAP) under the command of an embedded host microprocessor/microcontroller. Thus, the eTBCs enable the practical and effective use of the IEEE Std 1149.1 test-access infrastructure to support embedded/built-in test, emulation, and configuration/maintenance facilities at board and system levels.
The eTBCs master all TAP signals required to support one 4- or 5-wire IEEE Std 1149.
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