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Table 17. DIP switch settings
Switch diagram
Switch
name
Supported function
Settings
CWTAP_PROG
8
7
6
5
4
3
2
1
SW_SVR0
SW_SVR1
QSPI_MAP2
QSPI_MAP1
QSPI_MAP0
CFG_TEST_SEL_B
ON '1'
SYSCLK_SEL
SW3[1]
System clock
selection
SYSCLK_SEL
• 0: Differential SYSCLK (default setting)
• 1: Single-ended SYSCLK
SW3[2] +
SW3[6:7]
Device type selection
CFG_TEST
SW_SVR[1:0]
• 111: Enables all cores (default setting)
SW3[3:5] QSPI device map
QSPI_MAP[0:2]
Setting QSPI_A_CS
0
QSPI_A_CS
1
Description
000
DEV#0
DEV#1
Default
setting
001
DEV#1
DEV#0
Swapping
010
EMU
DEV#0
Prog#0
011
EMU
DEV#1
Prog#1
100
DEV#0
EMU
Emulator
access
101-111 Reserved
SW3[8]
JTAG header
selection
CWTAP_PROG
• 0: JTAG header for the LS1046A processor
(default setting)
• 1: JTAG header for CPLD programming
SW_RST_MODE
8
7
6
5
4
3
2
1
CMSISDAP_EN
SW_EVDD_SEL
SD1REFCLK_SEL
UART_SEL
SW_BAKUP
VDD_VOLT_SEL
SW_RCW_SRC8
ON '1'
SW4[2]
VDD voltage
selection
VDD_VOLT_SEL
• 0: VDD is 1.0 V (default setting)
• 1: VDD is 0.9 V
SW4[3]
Unused
SW_BAKUP
Reserved with 1 as the default setting
SW4[4]
UART1 port selection
UART_SEL
• 0: RJ45 connector is selected as UART1 port
• 1: Micro-USB port is selected as UART1 port
(default setting)
SW4[5]
SerDes1 clock 2
source selection
SD1REFCLK_SEL
• 0: SerDes1 clock 2 is sourced from a 100 MHz
clock source
• 1: SerDes1 clock 2 is sourced from a 156.25
MHz clock source (default setting)
SW4[6]
Unused
SW_EVDD_SEL
Reserved with 0 as the default setting
Table continues on the next page...
LS1046ARDB Functional Description
QorIQ LS1046A Reference Design Board Reference Manual, Rev. 2, 30 May 2019
38
NXP Semiconductors