Publication No. SBC329-HRM/1
Statement of Volatility 131
C.2 Non-Volatile Memory
The SBC329 contains non-volatile memory, i.e. memory in which the contents are
retained when power is removed.
Table C-2 Non-Volatile Memory
Memory Type
Size
User
Modifiable?
User Access
to Data?
Write
Protectable?
Function
Process to Clear
SATA NAND
drive
32 GB
device
Yes
Yes
Yes
Solid State Flash drive stores
operating system or user data
Any hard drive formatting
utility. Fast Erase facility
Boot (SPI)
Flash
3 x 16 MB
devices
Yes
Yes
Yes
2 x BIOS code & ME firmware,
1 x BIT code/results
Can be cleared by any utility
capable of writing to the
PCH SPI bus
NVRAM
(FRAM)
1 MB
device
Yes
Yes
Yes
512 KB user-defined
parameters
512 KB system-defined
parameters
Can be cleared by any utility
capable of writing to I/O
space
EEPROM
256 Kbit
Yes
Yes
Yes
PCIe Switch configuration
Can be cleared by any utility
capable of writing to the
Switch local SPI bus
Flash
2 x 4 MB
No
No
Yes
Ethernet device configuration
Can be cleared by any utility
capable of writing to the
LAN SPI bus
FPGA/Power
Manager
N/A
No
Yes
N/A
Power-up/reset logic, glue
logic, LPC registers, timers,
Watchdog, NVRAM access
JTAG via TAC
EEPROM
40 Kbit
No
Yes
No
TPM key storage and user
credential storage
Proprietary software
EEPROM
2 x 8-bit
registers
Yes
Yes
Yes
DIP Switch settings
BIOS set-up utility
EEPROM
1 x8 Kbit
No
No
Yes
SPD information for on-board
SDRAM
Can be cleared by any utility
capable of writing to the
PCH I
2
C bus
EEPROM
10 bytes
No
Yes
No
Elapsed Time Indicator
DOS
–
proprietary software
EEPROM
256 bytes
No
Yes
No
BMM FRU data
DOS
–
proprietary software
Flash
256 KB
No
No
No
BMM boot code storage
Proprietary software