NuMaker NUC980 IIoT
MAY 20, 2020
Page
20
of 46
Rev 1.00
SPI NAND
– environment
Loader Type is set uboot environment variables, the image of environment type into SPI NAND flash
in the specified address. U-Boot reads environment variables file to set the environment. If image start
offset equal then 0x80000, image of data into SPI NAND flash in the 0x80000 address, it can help
user to configure SPI NAND flash.
Figure 5-6 SPI NAND
– environment
Boot from SPI Flash
The NUC980 Series MPU EVB provides jumpers to select boot-up conditions. According to the following
switches, users can boot from SPI Flash and watch the successful boot message from UART_0.
SW
Description (Status and Function)
GPIO pin of NUC980
SW1.2/ SW1.1
Boot Source Selection
OFF/OFF = Boot from SPI Flash.
GPG1/GPG0
R24
Watchdog Timer (WDT) Enabled/Disabled
Selection
ON = After power-on, WDT Disabled.
OFF = after power-on WDT Enabled
GPG3
R25
UART 0 Debug Message Output ON/OFF Selection
ON = UART 0 debug message output ON.
GPG5
R27, R26
SPI Flash type and data width selection
ON/ON = SPI-NAND Flash with 1-bit mode.
ON/OFF = SPI-NAND Flash with 4-bit mode.
OFF/ON = SPI-NOR Flash with 4-bit mode.
OFF/OFF = SPI-NOR Flash with 1-bit mode.
GPG9/ GPG8
Summary of Contents for NuMaker NUC980 IIoT
Page 12: ...NuMaker NUC980 IIoT MAY 20 2020 Page 12 of 46 Rev 1 00 Click Next Click Install ...
Page 33: ...NuMaker NUC980 IIoT MAY 20 2020 Page 33 of 46 Rev 1 00 NuMaker NUC980 IIoT Power Schematic ...
Page 34: ...NuMaker NUC980 IIoT MAY 20 2020 Page 34 of 46 Rev 1 00 NuMaker NUC980 IIoT NUC980DK Schematic ...
Page 38: ...NuMaker NUC980 IIoT MAY 20 2020 Page 38 of 46 Rev 1 00 NuMaker NUC980 IIoT Memory Schematic ...
Page 39: ...NuMaker NUC980 IIoT MAY 20 2020 Page 39 of 46 Rev 1 00 NuMaker NUC980 IIoT RMII_PE Schematic ...
Page 43: ...NuMaker NUC980 IIoT MAY 20 2020 Page 43 of 46 Rev 1 00 NuMaker NUC980 IIoT USB Schematic ...
