National-instruments Signal Processing Engineering Educational Device N Manuel d'utilisateur télécharger pdf (Page 23)

Chapter 2 NI SPEEDY-33 Functional Description and Interface

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

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National-instruments Signal Processing Engineering Educational Device N Manuel d'utilisateur Page 23