DIN_LINES

1 to 24

In

Signals to be captured

STARTUP_TRIGGER_LINES

1 to 4

In

1 to 4 trigger lines for simple boolean condition (1 to 4-bit value)

CLK_CAPT

1

In

Capture clock (can support frequencies up to 200 MHz – check timing reports for realistic performance)

If “CLK_CAPT” is available before the trigger condition is met, samples can be captured before the trigger condition.

CLK_READ

1

In

Secondary clock for data transfer management between the STARTUP_FAST_CAPTURE_RAM and the embedded NXscope RAM.

CLK_READ can be asynchronous from CLK_CAPT, and doesn’t doesn’t need to be at high frequency.

Any 20 to 100 MHz clock can be used as CLK_READ

PRE_CAPTURE_DONE

1

Out

Goes high when the trigger condition has been met. The capture in the first RAM level is done imediatelly, then NXscope_Startup waits for a capture command to transfer the captured data to the dump file via ANGIE USB-JTAG adapter..

TRIG_ARMED

1

Out

Once the STARTUP_FAST_CAPTURE_RAM has been filled, the user can launch the NXscope capture thanks to the “nxboard” GUI. TRIG_ARMED goes high and launches the transfer between both RAM sets.

DONE

1

Out

When the data transfer is complete, DONE goes high, and NXscope starts reading by JTAG via ANGIE USB adapter to generate the dump file for waveform display.