Table 2-22. Switch settings (continued)
Switch Supported function Description
• 0: Disable thermal monitors and other alarms
• 1: Normal operation (default setting)
SW4[2] Automatic power on SW_AUTO_ON
• 0: Normal power on/off (default setting)
• 1: Always power up
SW4[3] System configuration write
protect
CFG_MEM_WP
SW_CFG_WP
• 0: Allow writes to SYSID and I2C flash
• 1: Write-protect SYSID and I2C flash (default setting)
SW4[4] JTAG Scan mode
TBSCAN_EN_B
SW_TBSCAN
• 0: Boundary Scan mode
• 1: Debugging mode (default setting)
SW4[5] Boot Box mode SW_BOOTBOX_B
• 0: Enable Boot Box mode
• 1: Normal operating mode (default setting)
SW4[6] VDD power enable SW_VDD_DIS
• 0: Enable VDD power supply (default setting)
• 1: Disable VDD power supply
SW4[7:8] General purpose
CFG_GPIN[7:6]
SW_GPIN[7:6]
• 00: Software or end-user defined (default setting)
The table below summarizes the default switch settings of the LX2160ARDB DIP
switches.
Table 2-23. Default switch settings
DIP switch Default setting
SW1 1111_1000
SW2 0000_0110
SW3 1111_1100
SW4 1011_1000
2.19 System controller
The LX2160ARDB system controller (or “CPLD” for short) controls the operation of the
system, including:
• AC power supply control
• Onboard regulator control and sequencing
• Reset assertion to processor and devices
• Processor and system configuration
System controller
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 0, 09/2018
58 NXP Semiconductors
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