PN7462 family Quick Start Guide - Development Kit
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.6 — 14 May 2018
319816
When the PN7462AU is mounted as a USB mass storage device, the files listed in the
table below are visible in the device root.
Table 7. Files found in USB mass storage
PN7462AU´s user flash code (see Table 8 for description of <nn>)
Status of previous write operation to user flash (see Table 9 for description
of <s>)
PN7462AU´s user EEPROM date (see Table 8 for description of <nn>)
Status of previous write operation to user EEPROM (see Table 9 for
description of <s>)
PN7462AU USB mass storage supports various data/ code protection levels.
Table 8. Code and data protection level
Cannot read. Write allowed. Only applicable sectors erased before writing
Cannot read. All sectors of the applicable memory are erased before writing.
Cannot read. Cannot write via USB mass storage.
Table 9. Status of read write operating code
Last write operation was successful
Fresh memory (FLASH/ EEPROM has never been downloaded via USB
mass storage)
To update the flash or EEPROM via USB once the device is in USB primary download
mode, the following instructions are to be followed:
1. Navigate to the newly mounted PN7462AU drive.
2. Delete CRP_<nn>.bin file in case the flash area needs to be updated or
DRP_<nn>.bin file in case the EEPROM area needs to be updated.
3. Copy the flash or EEPROM binary to the new drive.
4. PN7462AU should automatically un-mount and re-mount itself.
5. The update was successful, if the following status files are present on the USB MSD.
CRPSTA_00.bin for the flash memory,
DPRSTA_00.bin for the EEPROM memory.
6. Press the “RST_N” switch and PN7462AU starts executing the new flash code.
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