SLVAF93A october   2022  – april 2023 LP8764-Q1 , TPS6594-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Hardware and PMIC Setup
  5. 3Configuration Overview
  6. 4Instructions
  7. 5Special Considerations
    1. 5.1 Changing the Serial Control Interface
    2. 5.2 Updating the Frequency Selection
    3. 5.3 PFSM
    4. 5.4 Permanently Locking the NVM
    5. 5.5 Updating the Register CRC
  8. 6NVM Validation
  9. 7References
  10.   A Registers Backed by NVM
  11.   B Non-NVM Registers Which are Part of the Register CRC
  12.   C CRC for User Registers, Page 0 and Page 4
  13.   D Example With I2C Serial Interface
  14.   E Revision History

5.3 PFSM

The PFSM is divided into sub-pages. The TPS659x devices have 3 sub-pages while the LP876x family of devices have 2. Control of the sub-pages is managed in bits 0 and 1 of register address 0xa4 of page 0. The contents of the PFSM which are stored in binary file are to be moved to the page 3 user registers as indicated in Table 5-3.

CAUTION: The TPS6594-Q1 and TPS6593-Q1 family of devices have three subpages for page 3. The LP8764-Q1 device only has two subpages for page 3 and sub-page 2 does not exist. Attempting to write to sub-page 2 of the LP8764-Q1 results in writing to sub-page 1, corrupting the memory space.
Table 5-3 PFSM Sub-page Control
Page, Register Address Page 0, Register Address 0xA4 Binary File
Bit 1 Bit 0
3, 0x00-0xFF 0 0 0x3000-0x30FF
0 1 0x3100-0x31FF
1 0 0x3200-0x32FF