Freescale Semiconductor PE Micro Cyclone Pro User Manual page 77

8.3.3.2
8.3.3.3
Cyclone PRO User Manual
Target Has RESET Button (Class III Boards Only)
The software occasionally needs to get control of the target. On systems
which are Class III boards with the monitor mode circuitry built-in
(including RS-232 driver), there is no means to reset the target to gain
control. If the board has a reset button, the software can use this to gain
control of the target system. If this option is checked, the software will
prompt the user to push the target reset button when a reset of the target
system is desired. If the option is unchecked, the software will ask the
user to power cycle the target system to achieve a reset.
MON08 Cable Connection Communications Type (Class II Boards
Only)
This selection box is valid only for Class II hardware configurations using
the MON08 cable. It allows the user to specify the sequence that the
software uses to power up the ICS system. When the software tries to
create a power-on reset condition, two events must occur:
1. Power of the target MCU must go below 0.1v. This means that the
processor can not be receiving power from its power pins, nor can it
have a significant voltage being driven on port pins or the IRQ line, as
these will drive the MCU power back through these pins. It is crucial,
therefore, to have the ICS and the Target both powered down at
some point in time.
2. The processor MON08 configuration pins, including IRQ, must be
properly driven when the target processor resets to drive it into moni-
tor mode. If these pins are not set up properly before the processor
powers up, the processor may start up in user mode.
Power Down ICS, Ask the user to power down their board, Power Up
ICS, Ask the user to power up their board
This is the default option and should work for most, if not all, ICS08/Target
Board solutions. Refer to the manual addendum under startup for the
settings for a specific ICS board. It requires the user go through two
dialog stages, and requires more time than simply cycling the power.
1. Software automatically powers down the ICS.
2. Software asks the user to power down the board as follows:
CYCLONE PRO
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