Description of OTP bits

Description

Address Bits Description
17 1 Set oscillator frequency to 19.2MHz
3 Enable pull-ups on the SDIO pins
19 Enable GPIO bootmode
20 Set the bank to check for GPIO bootmode
21 Enable booting from SD card
22 Set the bank to boot from
28 Enable USB device booting
29 Enable USB host booting (ethernet and mass storage)
28 31: 0 Serial number
29 31: 0 Bitwise inversion of serial number
30 31: 0 Revision number
64 31: 0 MAC address
65 31: 0
66 6: 0 GPIO for ETH_CLOCK output pin
7 Enable ETH_CLOCK output
14: 8 GPIO for LAN_RUN output pin
15 Enable LAN_RUN output
24 Extend USB HUB timeout parameter
25 ETH_CLK frequency
0: 25MHz
1: 24MHz

References

Copyright

© 2018 Yukimasa Sugizaki. All rights reserved.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.