b9823103_ammer_for_ARM_and_Cortex_cores__Description
[Pin] 17 [Signal] DBGRQ [Type] NC [Description] 
This pin is not connected in Flasher ARM. It is reserved for compatibility with other equipment to be used as a debug request signal to the target system. Typically connected to DBGRQ if available, otherwise left open.
SEGGER | Flasher ARM | Flash Programmer for ARM and Cortex cores
Description