Overview
Boot and frequency DIP switches (SW1+SW2)
The board incorporates two blocks of DIP switches, SW1 and SW2 where each has 5 positions.
SW2[1..5] and SW1[1] are for boot selection and SW1[2..5] is for frequency selection.
Boot selection
Following is configuration of SW2[1..5] and SW1[1] (6 positions from left to right) –
| Boot from: | SW2(1/5) | SW2(2/5) | SW2(3/5) | SW2(4/5) | SW2(5/5) | SW1(1/5) | SW1(2/5) | SW1(3/5) | SW1(4/5) | SW1(5/5) |
|---|---|---|---|---|---|---|---|---|---|---|
| SPI ROM (onboard) | off | off | off | on | on | off | x | x | x | x |
| SD card | off | on | on | on | off | on | x | x | x | x |
| eMMC (onboard) | off | on | on | on | on | off | x | x | x | x |
Following is configuration of SW1[2:5] –
| Boot from: | SW2(1/5) | SW2(2/5) | SW2(3/5) | SW2(4/5) | SW2(5/5) | SW1(1/5) | SW1(2/5) | SW1(3/5) | SW1(4/5) | SW1(5/5) |
|---|---|---|---|---|---|---|---|---|---|---|
| CPU=1333MHz, DDR=1600MTps | x | x | x | x | x | x | on | off | on | on |
| CPU=1600MHz, DDR=2100MTps | x | x | x | x | x | x | on | on | on | off |
| CPU=1800MHz, DDR=2400MTps | x | x | x | x | x | x | off | off | on | off |
| CPU=2000MHz, DDR=2100MTps | x | x | x | x | x | x | off | on | off | off |
| CPU=2000MHz, DDR=2400MTps | x | x | x | x | x | x | off | on | on | off |