Segger J-Link User Manual page 82

82
All of the actions performed by the commands, excluding writing the OTP sector and
erasing the flash, can be undone. This tool can be used to erase the flash of the con-
troller even if a program is in flash which causes the ARM core to stall.
When starting the STR91x commander, a command sequence will be performed
which brings MCU into Turbo Mode.
"While enabling the Turbo Mode, a dedicated test mode signal is set and controls the
GPIOs in output. The IOs are maintained in this state until a next JTAG instruction is
send." (ST Microelectronics)
Enabling Turbo Mode is necessary to guarantee proper function of all commands in
the STR91x Commander.
J-Link / J-Trace (UM08001)
CHAPTER 4
© 2004-2011 SEGGER Microcontroller GmbH & Co. KG
J-Link and J-Trace related software