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NXP Semiconductors
1. Start the FS23 NXP GUI in I
procedure in
Section
2. Enter Test mode to be able to write into the Mirror registers. See
3. From the MIRROR tool, in
Figure 36. Enabling SPI from an empty part
4. On the KITFS23LDOEVM, change jumpers J28/29/31/32 to position 2-3.
5. The GUI should change to SPI mode. If not, select SPI from the the Protocol selection box. After ensuring
that Test mode is still active, the MIRROR tool can be accessed to continue the modification of Mirror
registers using SPI communication protocol.
The Protocol Selection box is used to change MCU communication protocol from the GUI. OTP and hardware
changes must be made up-front accordingly.
The currently selected protocol can be checked in the USB and Device status bar.
Figure 37
illustrates these check points.
Figure 37. Checking the currently used MCU communication protocol in the GUI
6.3.3 Watchdog management
The FS2300 provides Watchdog monitoring with keys as a functional safety feature. Watchdog monitoring
requests synchronize actions from SBC and MCU. The Watchdog feature can be disabled in QM version only.
The Watchdog is always enabled for an ASIL B part.
UM11879
User manual
2
C mode and connect the KITFS23LDOEVM to the GUI by following the
7.2.
Section
6.5.2.1.1, select only SPI_EN bit and Write in the Mirror registers.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 25 September 2023
KITFS23LDOEVM evaluation board
Section
7.3.2.
UM11879
© 2023 NXP B.V. All rights reserved.
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