Powerup And Configuration Process - ARM MPS2 Technical Reference Manual

3.4

Powerup and configuration process

The power push buttons and configuration files control the sequence of events of the MPS2 and MPS2+
board powerup and configuration process.
The following figure shows the powerup and configuration process.
ON/OFF/Soft Reset
button pressed briefly
The board powerup and configuration sequence is:
1. The board applies power to the system.
2. The MCC powers the EEPROM and reads it to determine the HBI identification code for the board.
3. The system enters standby state.
4. The system enables the microSD memory card and you can connect a workstation to the MCC USB
2.0 Full Speed port to edit existing configuration files or Drag-and-Drop new configuration files.
5. The system stays in standby state until you press the ON/OFF/Soft RESET push button.
100112_0200_09_en
MCC reads the EEPROM and does preliminary configuration.
You can use the USB 2.0 Full Speed port to edit and update the
configuration files in the microSD card.
ON/OFF/Soft Reset button pressed?
MCC reads configuration files from microSD card.
MCC reads all configuration files and configures the board clocks.
The MCC configures the FPGAs and SCC registers.
MCC pre-loads the boot RAM image.
Assert CB_nPOR and
CB_nRST
Resets CB_nPOR and CB_nRST released, processor starts executing code
Hardware RESET or ON/OFF/Soft Reset
Copyright © 2013–2016, 2018–2020 Arm Limited or its affiliates. All
Apply power
Standby state
Yes
Run state
Run boot SRAM image if
present
button pressed?
Hardware RESET button pressed or ON/OFF/
Soft Reset button pressed for 2 seconds
Figure 3-2 Powerup and configuration sequence
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3 Configuration
3.4 Powerup and configuration process
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