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©2019 NEC Display Solutions, Ltd. Page 9 of 74
GPIO Summary
• GPIO 14 & 15 (UART0 TX & RX) – internal serial connection to the display
• GPIO 18 – demodulated IR receiver from the display
• GPIO 23 – shutdown signal (goes low to signal shutdown)
Requirements
• Compatible NEC display
o C651Q
o C751Q
o C861Q
o C981Q
o P404
o P484
o P554
o P654Q
o P754Q
o V404
o V404-T
o V484
o V484-T
o V554
o V554-T
o V554Q
o V654Q
o V754Q
o V864Q
o V984Q
o UN462A
o UN462VA
o UN492S
o UN492VS
o UN552
o UN552A
o UN552S
o UN552V
o UN552VS
o UX552
o UX552S
• NEC Compute Module Interface board
o DS1-IF10CE
• Raspberry Pi Compute Module
o CM3 16 GB NEC Edition – (RPi3CM16G)
o CM1 or CM3 4 GB from RaspberryPi
o
CM3+ 8, 16, or 32 GB versions from RaspberryPi
• Internet connection
• LAN hub and cables
• Standard USB 2.0 cable
• Host PC running either Windows or Ubuntu, or a standard Raspberry Pi 1 / 2 / 3 running
Raspbian OS
• USB keyboard and mouse for connecting to the display (recommended)
• Operating system
.img file
• Software configuration tools (see following sections)
Operating System Programming Procedure
The custom 16GB Raspberry Pi Compute Module 3 NEC Edition is pre-programmed with the Raspbian
full Operating System and will boot without needing to be programmed; standard Compute Modules from
Raspberry Pi aren’t programmed with an Operating System by default.
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