NXP Semiconductors
UM11183
KITFS85SKTEVM evaluation board
UM11183
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2019. All rights reserved.
User guide
Rev. 2.0 — 20 February 2019
29 / 50
7 Using the KITFS85SKTEVM evaluation board
This section summarizes the overall setup. Detailed description is provided in the
following sections.
Before starting the process, choose the mode you want to run the device .
•
In Normal mode, the configuration comes from OTP fuses.
•
In Debug mode, you can either use the current configuration from OTP fuse, if any, or
use the OTP emulation mode to write in the mirror register.
The Normal mode or Debug mode is defined at startup depending on the DBG pin level.
•
Normal mode is set by tying DBG to ground
•
Debug mode is set by setting DBG voltage to 5.0 V
In OTP emulation, you can overwrite the mirror registers from a given OTP fuse
configuration. See
Section 4.2.1 "OTP and mirrors registers"
to define your configuration.
In OTP fuse configuration, use the configuration fused in the OTP. So, if a valid OTP fuse
configuration exists, then it will be copied to the mirror registers at startup.
7.1 Generating the OTP configuration file
Define and generate your OTP configuration using the excel file
FS85_FS84_OTP_Config.xlsm
. This file allows configuring the device for parameters
controlled by the the main state machine and the fail-safe state machine.
To generate the script:
1. Fill the
OTP_conf_main_reg
sheet
Figure 19. OTP_conf_main_reg spreadsheet example
2. Fill the
OTP_conf_failsafe_reg
sheet