ADLINK Technology SMARC MODULE LEC-EL, Product Specification

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ADLINK Technology Inc. LEC-EL Product specification
Page 16 copyright © 2021 ADLINK Technology Inc.
4.4.6 Boot Select
Name Pin # Description I/O
Type I/O
Level Power
Domain PU / PD Comments
BOOT_SEL0#
BOOT_SEL1#
BOOT_SEL2# P123
P124
P125 Input straps determine the
Module boot I OD
CMOS 1.8Vsb Standby PU 4.7K
Driven by OD on Carrier.
Pulled up on module.
Only booting from EMMc and SDcard is supported
FORCE_RECOV# S155 I OD
CMOS 1.8Vsb Standby PU 10K
Driven by OD on Carrier.
Pulled up on module.
Low on this pin allows non-protected segments of Module boot device to
be rewritten / restored from an external USB Host on Module USB0. The
Module USB0 operates in Client Mode when in the Force Recovery
function is invoked. Pulled high on the Module.
For SOCs that do not implement a USB based Force Recovery functions,
then a low on the Module FORCE_RECOV# pin may invoke the SOC native
Force Recovery mode
– such as over a Serial Port.
For x86 systems this signal may be used to load BIOS defaults.
Pulled up on Module. Driven by OD part on Carrier.