Cypress FM4 Series - Internal Pull-Ups of JTAG Pins

CHAPTER 16: Debug Interface
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 921
2.4 Internal Pull-Ups of JTAG Pins
As specified by the IEEE Standard, this family provides the JTAG pins that have internal pull-ups.
The user can control pull-ups by setting the appropriate registers in the GPIO.
Table 2-5 Enabled or Disabled State of Internal Pull-ups of JTAG Pins
Pin Name
Pull-up with JTAG Pins Enabled *1
TCK/SWCLK
Enabled
TMS/SWDIO
Enabled
TDI
Enabled
TDO/SWO
Enabled *2
TRSTX
Enabled
*1: Pull-up is enabled on reset.
*2: Pull-up is disabled on output.