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Chapter 2 NI SPEEDY-33 Functional Description and Interface
© National Instruments Corporation 2-11 NI SPEEDY-33 User Manual
Flash Boot Jumper
The flash boot jumper (J12) controls whether the DSP will attempt to boot
from the flash memory. The default setting is for the DSP to boot from flash
memory, described in the Flash Memory section. You must set the
NI SPEEDY-33 to the enable flash boot setting to run the device in
standalone mode.
If the NI SPEEDY-33 will only be used with the USB connection to PC, the
flash boot can be disabled, though it is not recommended. Table 2-3 shows
the possible flash boot settings.
Flash Write Enable Jumper
The flash write enable jumper (J5) controls whether the DSP writes to the
flash memory as described in the Flash Memory section. This configuration
setting is useful for write protecting the DSP algorithm for production
purposes. When the flash write is disabled, the DSP cannot modify the
contents. Table 2-4 shows the possible flash write enable settings.
Table 2-3. Flash Boot Jumper (J12) Settings
Jumper
Enable Flash Boot
(Default Setting)
Disable Flash Boot
Flash Boot Position 1 Position 3
Table 2-4. Flash Write Enable Jumper (J5) Settings
Jumper
Enable Flash Write
(Default Setting)
Disable Flash Write
Flash Write Enable Position 1 Position 3
1
2
3
1
2
3
123
123