NXP Semiconductors QorIQ LX2160A - 2.18 DIP switches

2.18 DIP switches
The LX2160ARDB provides dual inline package (DIP) switches to allow easy
configuration of the system for the most popular board options. These switches are stored
in BRDCFG and DUTCFG registers by CPLD before being used, allowing software
(either local or remote) to reconfigure the system as needed.
The table below explains the DIP switches available in the LX2160ARDB. For each DIP
switch:
• If the switch is up (on), the value is 1
• If the switch is down (off), the value is 0
Table 2-22. Switch settings
Switch Supported function Description
SW1[1:4] RCW fetch location
CFG_RCW_SRC[3:0]
SW_RCW_SRC[3:0]
• 0000: Hard-coded RCW
• 1000: SDHC1: SD card
• 1001: SDHC2: eMMC
• 1010: I2C boot EEPROM
• 1100: XSPI sNAND, 2 KB pages
• 1101: XSPI sNAND, 4 KB pages
• 1111: XSPI serial NOR, 24-bit address (default setting)
SW1[5] Reset mode
RESET_REQ_B
SW_RST_MODE
•
0: Ignore RESET_REQ_B
• 1: Trigger system reset on assertion of RESET_REQ_B (default
setting)
SW1[6:8] XSPI_A device mapping
CFG_XSPI_MAP[3:0]
SW_XMAP[2:0]: Controls how XSPI_A chip-selects are connected to
devices/peripherals.
Bit value XSPI_A_CS0 XSPI_A_CS1 Description
000 (default
setting)
DEV#0 DEV#1 Boot from default
flash memory
001 DEV#1 DEV#0 Boot from
alternative flash
memory
010 QSPI emulator DEV#0 Boot from QSPI
emulator,
program default
flash memory
011 QSPI emulator DEV#1 Boot from QSPI
emulator,
program
alternative flash
memory
100 DEV#0 QSPI emulator Emulator access
SW2[1] PCIe Spread-Spectrum
enable
SW_SPREAD
Table continues on the next page...
DIP switches
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 0, 09/2018
56 NXP Semiconductors