Intel N2820 FH8065301616603 Data Sheet
Product codes
FH8065301616603
PCU – Serial Peripheral Interface (SPI)
1048
Datasheet
•
The Reserved section at offset 0h is related to functionality not supported by the
processor.
processor.
•
The Signature section selects Descriptor Mode as well as verifies if the Flash is
programmed and functioning. The data at the bottom of the Flash (offset 10h)
must be 0FF0A55Ah in order to be in Descriptor mode.
programmed and functioning. The data at the bottom of the Flash (offset 10h)
must be 0FF0A55Ah in order to be in Descriptor mode.
•
The Descriptor Map section defines the logical structure of the Flash in addition to
the number of components used.
the number of components used.
•
The Component section has information about the SPI Flash in the system
including:
including:
— Density of each component
— Illegal instructions (such as chip erase)
— Frequencies for read, fast read and write/erase instructions.
Figure 30. Flash Descriptor Sections
Descriptor
Map
Component
Signature
Region
Master
Soft Straps
VSCC Table
Descriptor
Upper Map
256B OEM
Section
Reserved
10 h
Reserved
0 h
4 KiB