The Flash Subsystem (FSS) provides access to
external flash devices via Octal Serial Peripheral
Interface (OSPI) and HyperBus interface along with
encryption/decryption, authentication, and in-line
ECC protection. FSS supports the following main
features:
- Provides two OSPIs or one OSPI and one HyperBus
flash interfaces
- OSPI0/HyperBus interface supports:
- Execute in place (XIP) operation
- 32-byte Block Copy (BC) operation
- ECC and/or authentication with four configurable
authentication regions and authentication on
32-byte blocks
- OSPI supports up to 4
devices
- OSPI supports single, dual,
quad, or octal SPI devices
- HyperBus interface supports up
to 2 devices
- The OSPI and HyperBus
interface have independent power management for
low power operations