AMY-5M
-
Hardware
Integration
Manual
Objective
Specification
Design-In
GPS.G5-MS5-08207
u-blox
proprietary
Page 21
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TDI/SAFEBOOT_N =
1?
ROM Defaults
Yes
TMS/CFG_PIN = 1
Yes
Read configuration from
configuration pins CFG_xx
No
Detect FLASH
1) 2)
Yes
Read configuration from FW image
in FLASH
No
Normal Boot Mode
No
TMS/CFG_PIN = 1
Yes
No
Revert to ROM Default
Safe Boot Mode
Boot System
Boot Safe ROM
Read configuration from
configuration pins CFG_xx
1) Detect Flash: valid
FW image with low
level configuration.
2) CFG Information
detected in FLASH.
1
Revert to ROM Defaults
Figure 11: Low Level Configuration Sequence
The
system
first
starts
with
the
32-Bit
ROM
defaults.
When
reading
a
configuration
from
a
FLASH
FW
image
this
gets
over
written.
When
using
CFG-pins,
only
the
13
available
settings
get
changed.
The
others
are
still
the
ROM
defaults.