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NXP Semiconductors
Fig 21. Block diagram of PCR Unit
8.1 Reset sources
The PN7462 family has 6 possible rest sources. These are described in detail in
66.
Table 66. Reset sources
Source
Software - PCR
Software - ARM
I2C interface
Watchdog
VBUS - PMU
RST_N pin
UM10858
User manual
COMPANY PUBLIC
Description
Software reset from the PCR peripheral; Resets the whole
chip except the PCR and the ARM debug interface
Software reset from the ARM processor; Resets the whole
chip except the PCR and the ARM debug interface
I2C Standard 3.0 defines a method to reset the chip via an I2C
command; This feature can be disabled; Resets the whole
chip except the PCR and the ARM debug interface
Reset the chip if the watchdog threshold is not periodically reloaded;
Resets the whole chip except the PCR and the ARM debug interface
Power-on reset sequence; Resets the complete chip when the voltage
is above 2.3 V
External reset triggered via reset pin; Resets the complete chip when
the RST_N pin is set to low
All information provided in this document is subject to legal disclaimers.
Rev. 1.4 — 14 May 2018
314514
UM10858
PN7462 family HW user manual
© NXP B.V. 2018. All rights reserved.
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