Within the System Controls
group box, the GUI updates the state of the EVM to indicate it is in Normal
Mode or Standby Mode. The user may command the EVM into Standby
Mode if the EVM is not being used or the Normal Mode can be selected
to command the EVM to wake up. The user may click the Reset button to command
the EVM to perform a software reset.
Note: When in Standby Mode the GUI
suspends status updates until a return to operation or software reset is issued. If
a hardware reset is asserted the GUI must be restarted to recognize return to
operation.
Standby mode
requires a wait period of two minutes to run 50/50 and park the DMD. Three
additional seconds are needed to complete all operations before issuing a Return
to Normal Mode command.
Once Standby has been issued the only command accepted by the DLPC900
controller board is Return to Normal Mode (0). Any other command can result
in unexpected behavior. In particular, a Park/Unpark is not accepted
until Normal mode is resumed. Using the isolated Park/Unpark command is no
longer recommended except for debugging purposes.
The EVM can be commanded to enter one
of the four operating modes. Within the Operating Mode group box there are
four choices:
- Video Mode – This mode is primarily used for display
applications, and is not recommended for applications which require pixel and
timing accuracy. In this mode, the user can choose from the four following video
modes:
- Parallel RGB
interface
- Internal test pattern
generator with ten test pattern options
- Pattern image display
from flash memory
- Solid Curtain with choice
of color
- Pre-stored Pattern Mode – In this mode, the user can
create a pattern sequence using images stored in flash.
- Video Pattern Mode – In this mode, the user can define a
pattern sequence using pattern data or video which is streamed using a parallel
RGB interface.
- Pattern On-The-Fly Mode – In this mode, the user can
create a pattern sequence using bitmap images which are loaded into the internal
memory of the DLPC900 via the USB or I2C interfaces. This mode can be
helpful to view a pattern sequence before storing the images in flash memory, as
updating the flash to use Pattern Mode can be a timely process.