JTAG Interface

The Sapphire SoC uses the JTAG User TAP interface block to communicate with the OpenOCD debugger.

Table 1. JTAG Ports

Port	Direction	Description
jtagCtrl_enable	Input	Indicates that the user instruction is active for the interface.
jtagCtrl_capture	Input	TAP controller is in the capture state.
jtagCtrl_shift	Input	TAP controller is in the shift state.
jtagCtrl_update	Input	TAP controller in the update state.
jtagCtrl_reset	Input	TAP controller is in the reset state.
jtagCtrl_tdi	Input	JTAG TDI for debugging.
jtagCtrl_tdo	Output	JTAG TDO for debugging.
jtagCtrl_tck	Input	JTAG TCK for debugging.