b9823103_ammer_for_ARM_and_Cortex_cores__Description
[Pin] 9 [Signal] TCK [Type] Output [Description] 
JTAG clock signal to target CPU. It is recommended that this pin is pulled to a defined state on the target board. Typically connected to TCK on target CPU.
SEGGER | Flasher ARM | Flash Programmer for ARM and Cortex cores
Description