Reference Guide

Item
Type (e.g. Flash PROM, EEPROM)
Can user
programs or
operating system
write data to it
during normal
operation?
Purpose? (e.g. boot
code)
CPLD B
CPLD
Yes
Enable HDD online &
fault LED, collect HSC
fault event and report
to CM, cable detect
function.
MB bridge board
FRU
FRU
No
Board manufacturing
information.
Power Delivery Board (PDB)
Microcontroller
include up to 1 MB of flash
NO
(For normal
customer/user
,there is no way can
go to the customer
and update him)
Report PSU and
Chassis Management
(MCU + FPGA) control
firmware.
FRU
FRU
NO
(For normal
customer/user ,there
is no way can go to
the customer and
update him)
PDB PPID information
Flash
Flash
NO
(For normal
customer/user ,there
is no way can go to
the customer and
update him)
Chassis Management
(FPGA FW) control
firmware.
FPGA
FPGA
NO
(For normal
customer/user
,there is no way can
go to the customer
and update him)
Enable Chassis
Management (FPGA
FW) control firmware.
Rover MB
PCH Internal
CMOS RAM
Battery-backed CMOS RAM
No
Real-time clock and
BIOS configuration
settings.
BIOS Password (part of
PCH internal CMOS
RAM)
Batterybacked CMOS RAM
Yes
Password to change
BIOS settings.
Primary BIOS SPI Flash
SPI Flash
No
Boot code.
iDRAC SPI Flash
SPI Flash
No
iDRAC Uboot
(bootloader)
BMC eMMC
eMMC NAND Flash
No
Operational iDRAC
FW, Lifecycle
controller (LC) USC
partition, LC service
diags, LC OS drivers,
USC firmware.
CPU Vcore and Memory
regulator
ROM
No
Operational
parameters
Vmem Regulators
ROM
No
Operational
parameters
System CPLD RAM
Flash
No
Not utilized