5.1. Enabling BST Circuitry
The IEEE Std. 1149.1 BST circuitry is enabled after the device is configured. If you need to perform the boundary-scan test prior to configuration, you must execute the MISCCTRL instruction upon device power up to enable the BST circuitry.
!Shift 10-bit MISCCTRL instruction (0x013) to Instruction Register SIR 10 TDI (013); !Transition to Run-Test-Idle state STATE IDLE; !Shift 8-bit data (0x01) to Data Register for BST circuitry enabling SDR 8 TDI (01);
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