Reference Guide

Internal Use - Confidential
Primary BIOS
SPI Flash
Non
- Volatile
1
U4027
32MB
SPI
Flash
No
Boot
code
SPI
interface
via
PCH
Software write
protected
Not possible with any
utilities or applications and
system is not functional if
corrupted/removed.
CPU Vcore
Regulators
Non
- Volatile
2
PAAU1, PBAU1
32 KB
ROM
No
Operational
parameters
Programmed
at
factory via
I2C
No write protect
Not
user clearable
Vmem
Regulators
Non
- Volatile
2
PAEU1,
PBEU1
32 KB
ROM
No
Operational
parameters
Programmed
at factory via
I2C
No write protect
Not
user clearable
System CPLD
RAM
Volatile
1
U_CPLD1
432Kb
RAM
No
Not
utilized
Not
utilized
Not accessible
Not
accessible
System CPLD
FLASH
Non
- Volatile
1
U_CPLD1
448Kb
FLASH
No
Power
on
System
Firmware
Firmware
update
BIOS Security
Protocols
Not
user clearable
System
Memory:
RDIMM and
LRDIMM
Volatile
Up
to 16 per
CPU
CPU<2:1>_CH<
H:A>_D<1:0>
Up to
64GB
per RDIMM
UP
to 128GB
Per
LRDIMM
DRAM
Yes
System
OS
RAM
System
OS OS Control
Reboot
or power down
system