SPRADB3A October   2023  – November 2024 AM2612 , AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1 , AM263P2 , AM263P4 , AM263P4-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Feature Differences Between AM26x Devices
  5. 2 Package Options
  6. 3 Feature Differences Between AM263 and AM263P
    1. 3.1 Feature Differences for System Consideration
      1. 3.1.1 New Features in AM263P
        1. 3.1.1.1 Resolver Peripheral
          1. 3.1.1.1.1 Migration From Software to Hardware Resolver
        2. 3.1.1.2 Trigonometric Math Unit
        3. 3.1.1.3 Remote L2 Cache
      2. 3.1.2 Memory Subsystem Differences
      3. 3.1.3 CONTROLSS Module Differences
        1. 3.1.3.1 ADC Feature Differences and Additions
        2. 3.1.3.2 ADC Safety Tile Additions
        3. 3.1.3.3 ADC_R Module Addition
      4. 3.1.4 QSPI/OSPI Module Differences
      5. 3.1.5 Hardware Security Module Differences
      6. 3.1.6 Hardware Differences
        1. 3.1.6.1 Sourcing VPP With ANALDO
      7. 3.1.7 Feature Omissions in AM263P
  7. 4 Software Changes Between AM263 and AM263P SDK
  8. 5 Feature Differences Between AM263 and AM261 Devices
    1. 5.1 Feature Differences for System Consideration
      1. 5.1.1 New Features in AM261
        1. 5.1.1.1 Universal Serial Bus (USB)
        2. 5.1.1.2 Trigonometric Math Unit
        3. 5.1.1.3 Remote L2 Cache
      2. 5.1.2 Memory Subsystem Differences
      3. 5.1.3 CONTROLSS Module Differences
        1. 5.1.3.1 ADC Feature Differences and Additions
        2. 5.1.3.2 ADC Safety Tile Additions
      4. 5.1.4 CPSW Feature Additions
      5. 5.1.5 Hardware Differences
        1. 5.1.5.1 Sourcing VPP With ANALDO
      6. 5.1.6 Feature Reductions in AM261
  9. 6 Software Changes Between AM263 and AM261 SDK
  10. 7 Feature Differences Between AM263P and AM261 Devices
    1. 7.1 Feature Differences for System Consideration
      1. 7.1.1 New Features in AM261
        1. 7.1.1.1 General-Purpose Memory Controller (GPMC)
        2. 7.1.1.2 Universal Serial Bus (USB)
      2. 7.1.2 Memory Subsystem Differences
      3. 7.1.3 CPSW Feature Additions
      4. 7.1.4 ADC Module Differences
      5. 7.1.5 Feature Omissions and Reductions in AM261
  11. 8 Software Changes Between AM263P and AM261 SDK
  12. 9 List of Errata Fixes in AM26x Devices
  13. 10Revision History

3.1.4 QSPI/OSPI Module Differences

AM263P devices come with an Octal SPI (OSPI) that replaces the Quad SPI (QSPI) from AM263 devices. With this new interface, it is possible to connect to both Octal and Quad-SPI flash memories. To connect to OSPI flash memory cells, the interface supports four additional data lines, an additional chip select, and the DQS pin that can be used as a data strobe or loopback clock input. AM263P devices also include two reset outputs for external SPI devices and an input for external ECC failure indication.

There is also a significant change in operation regarding data access. The AM263 QSPI uses a Serial Flash Interface (SFI) memory-mapped block to handle addressing and data access and this interface was limited to a maximum size of 8MB for external flash support. In comparison, the new AM263P OSPI peripheral does not use a memory-mapped interface block and instead handles direct and indirect data accesses through a data target interface. With this change, the upper limit on memory addresses has been increased to 128MB.

These interfaces are not software compatible due to the differences in data accesses. Any AM263-to-AM263P migration requires software updates for the QSPI/OSPI even if the AM263P OSPI bus is only used as a QSPI bus.

Table 3-2 details the high-level feature differences between these interfaces. For further details, see the device-specific Technical Reference Manuals.

Table 3-2 Interface Feature Differences
Feature AM263 Quad SPI AM263P Octal SPI
# of Data Lines 4 8
# of Chip Select Lines 1 2
External Device Reset N/A Yes, 2 outputs
Data Strobe N/A Yes
ECC Fail Indicator N/A Yes, 1 input
Data Access Data access through the SFI memory-mapped interface only Direct and indirect access supported
Maximum External Flash Supported Per Chip Select 8 MB 128 MB
opTI Flash Support
XIP No Yes
Boot Acceleration No Yes
FOTA Acceleration No Yes