6.3.2 2-wire JTAG Debug Interface for SDK User

The BM83 (IS2083BM) provides 2-wire JTAG interface for debugging; see the following figure. The target device (IS2083BM) must be powered, and all required signals must be connected. In addition, the interface must be enabled through a special initialization sequence.

Note: For more details on 2-wire debugging, refer to the IS2083 SDK User’s Guide and IS2083 SDK Debugger User’s Guide.

This interface uses the following two communication lines to transfer data to and from the BM83 (IS2083BM) device:

• Serial Program Clock (TCK_CPU)
• Serial Program Data (TDI_CPU)

These signals are described in the following sections. The following table describes the signals required for the interface.