NXP Semiconductors QorIQ LS1028A, Reference Manual, Page: 53 / 112

Table 28. Switch settings (continued)
Switch Supported function Description
SW5[1:2] SoC use
SW_CPU_FORCE[1:0]
• 0x: Normal mode (default value)
• 10: Force LS1043 interposer
• 11: Force LS1028
Do not change the default setting of this switch.
NOTE
SW5[3] Bypass mode
SW_BYPASS_B
• 0: Disable thermal monitors and other alarms
• 1: Normal operation (default value)
SW5[4] Write protect
SW_CFG_WP
• 0: Allow write to SYSID and UEFI flash
• 1: Write-protect SYSID and UEFI flash (default value)
SW5[5] Boot Box mode
SW_BOOTBOX_B
• 0: Enable boot-box mode
• 1: Normal operating mode (default mode)
SW5[6:7]
Unused Reserved
Default value is 0.
SW5[8] IEEE/SAI
• 0: Signals routed to IEEE1588 connector
• 1: Signals routed to TX-only SAI transceiver
The table below summarizes the default switch settings of the LS1028ARDB DIP switches.
Table 30. Default switch settings
DIP switch Value
SW2 1111_1000
SW3 1111_0X00
SW5 0X11_1000
3.2 LEDs
The LS1028ARDB has numerous onboard light-emitting diodes (LEDs), which can be used to monitor various system functions,
such as power-on, reset, board faults, and so on. The information collected from LEDs can be used for debugging purposes.
The following table lists all the LEDs available on the top-side of the LS1028ARDB board.
LEDs
QorIQ LS1028A Reference Design Board Reference Manual, Rev. b, 11/2018
NXP Semiconductors COMPANY CONFIDENTIAL
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