Board Configuration And Debug Support; Switch Configuration - NXP Semiconductors QorIQ LS1028A Reference Manual

Chapter 3

Board Configuration and Debug Support

This chapter contains the following sections:
•

Switch configuration

• LEDs
3.1 Switch configuration
The LS1028ARDB provides dual inline package (DIP) switches to allow easy
configuration of the system for the most popular board options. The CPLD stores the DIP
switch values in the BRDCFG and DUTCFG registers and that allows the software
(either local or remote) to reconfigure the system as required.
The following table explains the DIP switches available in the LS1028ARDB. For each
DIP switch:
• If the switch is up (on), the value is 1
• If the switch is down (off), the value is 0
Switch Supported function
SW1[1:4] RCW fetch location
CFG_RCW_SRC[3:0]
SW1[5] Reset mode
RESET_REQ_B
QorIQ LS1028A Reference Design Board Reference Manual, Rev. A, 02/2018
NXP Semiconductors
Table 3-1. Switch settings
SW_RCW_SRC[3:0]
• 0000: Hard-coded RCW
• 1000: SDHC1: SD card
• 1001: SDHC2: eMMC
• 1010: UEFI/I2C Boot EEPROM
• 1101: XSPI serial NAND, 4K pages
• 1111: XSPI serial NOR, 24-bit address (default value)
NOTE: The RCW source settings are mapped to 9-bit values when an
LS1043A processor is installed.
SW_RST_MODE
• 0: Ignore RESET_REQ_B
• 1: Trigger system reset on RESET_REQ_B (default value)
Table continues on the next page...
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