Kontron SMARC-sAT30 - Manual (Page 80)

User’s Guide
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K6 D11
J7 CPLD
J6
(U23)
E11
L7
C11
NAND_D1
NAND_D2
NAND_D3
E
D
G
E
F
IN
G
E
R
(J3)
BOOT_CPLD_SEL1
BOOT_CPLD_SEL2
8.2 BOOT Selection
SMARC sAT30 module can be booted from various devices or modules. The boot selection is done in the carrier
board. By default, module eMMC Flash is the source.
Boot options supported by SMARC sAT30 are shown in the table below:
BOOT_SEL2# BOOT_SEL1# BOOT_SEL0# Boot Source
FLOAT FLOAT GND Module eMMC Flash
FLOAT FLOAT FLOAT Module SPI
GND GND GND Carrier SATA
Caution! A BOOT_SELx# combination not contained in the table above is not valid. The SMARC sAT30 module will
default to boot from the module eMMC Flash if an invalid combination is selected.
The SMARC sAT30 boot selection is provided from the module CPLD as a 4bit selection to the NVIDIA Tegra T30 SoC.
The CPLD provides a 3bit selection from the carrier as shown in the table above. NAND_D [3:0] is allows pull up and pull
down in the module for optional boot select configuration.
F6
T30 CPU G6
(U10) D3
E4
NAND_D0 BOOT_CPLD_SEL0
P123
P124
P125
Figure 17: Boot Selection Strap Implementation
NVIDIA T30 CPU CPLD Net Name
Pin # Pin Name Pin # Pin Name
F8 GMI_AD00 K6 IO_K6 NAND_D0
G6 GMI_AD01 J7 IO_J7 NAND_D1
D3 GMI_AD02 J6 IO_J6 NAND_D2
E4 GMI_AD03 L7 IO_L7 NAND_D3