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©2021 Sharp NEC Display Solutions, Ltd. Page 80 of 86
14 Frequently Asked Questions
What video resolutions are recommended and supported?
Using the display’s native resolution of 3840x2160 is recommended. Other resolutions such as
1920x1080 can also be used.
The following video resolutions do not currently display correctly and should be avoided:
• 4096x2160 @ 60Hz (use the native 3840x2160 @ 60Hz instead)
• 1920x2160 @ 60Hz
Can the second HDMI output or camera inputs on the Compute Module 4 be accessed from the
Interface Board?
No. These connections are not exposed on the Interface Board.
Is the Raspberry Pi Compute Module functionality limited in some way, such as what software or
Operating Systems can be used?
No.
Are the GPIO pins on the Compute Module accessible and open to use?
Currently the header on the NEC Compute Module Interface Board is not populated with header pins and
is not officially supported. Some GPIO pins are used for display related functions as described elsewhere
in this document.
What is the communications speed of the internal serial connection to the display?
9600 baud. No parity. 8 bits data length with 1 stop bit.
Does Sharp NEC Display Solutions provide support for any software or Operating System on the
Compute Module?
Sharp NEC Display Solutions provides a Python based SDK for accessing the display control functionality
via the internal serial connection. Support for other software or Operating Systems are not provided by
Sharp NEC Display Solutions. See Python Based NEC PD SDK on page 65.
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