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• Shutdown signal support

o The display can signal to the Operating System, running on the Raspberry Pi Compute

Module, that the power is about to turn off so the software and OS can shutdown

gracefully.

o This uses GPIO 23 on the Raspberry Pi Compute Module.

• Full power control

o Power for the Compute Module can be configured to automatically turn on when the

display is turned on from a standby mode, or it can be turned on separately via the

display’s OSD, HTTP interface, or network commands.

o By default, the Compute Module will remain powered on even when the display goes

into standby mode and can be turned off separately via the display’s OSD, HTTP

interface, or network commands.

The display can be configured to turn off the Compute Module power with the display

power.

o By default, the fan on the NEC Compute Module Interface board will remain on

whenever the Compute Module is powered.

The fan operation can be controlled via the OSD or commands from the Compute

Module.

• Watchdog timer support

o Can be used to reset a locked CPU by automatically restarting the Compute Module. A

restart will occur if no periodic reset signal is received from the Compute Module within

a certain time period.

• Hardware codec support licenses

o The Raspberry Pi Compute Module 3 NEC edition includes hardware codec licenses for

MPEG-2, MPEG-4, and VC-1.

• Built in touch-screen support

o For display models with integrated touch-screens, the USB touch device will appear as a

standard USB HID (Human Interface Device) device to the Compute Module.

These models require display firmware version R1.7 or later for this feature: P404, P484, P554, V404, V484, V554,

V404-T, V484-T, V554-T

NEC C751Q User Manual

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