Switch and jumper settings
UM1015
16/38
Doc ID 18124 Rev 1
4.2 Switch
2
settings
Note:
If SW2-1 and SW2-2 are both off, B0 (pin PL_GPIO51) is in HiZ state, and can be controlled
from the application board.
If SW2-3 and SW2-4 are both off, B1 (pin PL_GPIO52) is in HiZ state, and can be controlled
from the application board.
If SW2-5 and SW2-6 are both off, B2 (pin PL_GPIO53) is in HiZ state, and can be controlled
from the application board.
If SW2-7 and SW2-8 are both off, B3 (pin PL_GPIO54) is in HiZ state, and can be controlled
from the application board.
SW2-1 and SW2-2 on: invalid condition
SW2-3 and SW2-4 on: invalid condition
SW2-5 and SW2-6 on: invalid condition
SW2-7 and SW2-8 on: invalid condition
Table 7.
Switch 2 settings
Boot from
SW2-1 SW2-2 SW2-3 SW2-4 SW2-5 SW2-6 SW2-7 SW2-8
USB_BOOT
Off
On
Off
On
Off
On
Off
On
ETH (parameter from I2C
ROM)
On
Off
Off
On
Off
On
Off
On
ETH (parameter from SPI
ROM)
Off
On
On
Off
Off
On
Off
On
Serial NOR
(default setting)
On
Off
On
Off
Off
On
Off
On
Parallel NOR 8 (EMI with ACK)
Off
On
Off
On
On
Off
Off
On
Parallel NOR 16 (EMI with
ACK)
On
Off
Off
On
On
Off
Off
On
Parallel NAND 8
Off
On
On
Off
On
Off
Off
On
Parallel NAND 16
On
Off
On
Off
On
Off
Off
On
Reserved for SPI
Off
On
Off
On
Off
On
On
Off
Reserved for I²C
On
Off
Off
On
Off
On
On
Off
UART_BOOT
Off
On
On
Off
Off
On
On
Off
BootROM bypass
On
Off
On
Off
Off
On
On
Off
Parallel NOR 8 (EMI without
ACK)
Off
On
Off
On
On
Off
On
Off
Parallel NOR 16 (EMI without
ACK)
On
Off
Off
On
On
Off
On
Off
Reserved
Off
On
On
Off
On
Off
On
Off
Reserved
On
Off
On
Off
On
Off
On
Off
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