Dell PowerEdge M915 Technical Guide - Page 49

Network Daughter Card FRU and Temperature Sensor

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Dell Remarks RTC is inside SP5100 south bridge chip. Jumper on motherboard can be used to reset to factory default settings. Network Daughter Card LOM Memory Size: 4Mb Type: [Flash PROM, EEPROM]: Flash Can user programs or operating system write data to it during normal operation? Yes, under software control. Purpose? [boot code] Contains LOM boot code and config data How is data input to this memory? Requires vendor provided firmware file and loader program used during factory assembly or possible field update. A system loaded with arbitrary data in firmware memory would not operate. How is this memory write protected? Software control. Network Daughter Card FRU and Temperature Sensor Size: 512bytes Type: [Flash PROM, EEPROM]: EEPROM Can user programs or operating system write No data to it during normal operation? Purpose? [boot code] Contains firmware for FRU and temperature sensor processing How is data input to this memory? Boot block is cable flashed only, FRU and temperature registers are accessed via iDRAC6 I2C. How is this memory write protected? Software control. H200 SRAM Size: 128K Bytes Type: [Flash PROM, EEPROM]: Serial RAM Can user programs or operating system write No data to it during normal operation? Does it retain data when powered off? Yes Purpose? [boot code] Storage configuration data How is data input to this memory? Host controller through SDRAM bus How is this memory write protected? Software write protected H200 Flash Size: 64Mb Type: [Flash PROM, EEPROM]: Flash Can user programs or operating system write No data to it during normal operation? PowerEdge M915 Technical Guide 49

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Dell
PowerEdge M915 Technical Guide
49
Remarks
RTC is inside SP5100 south bridge chip.
Jumper
on motherboard can be used to reset to factory
default settings.
Network Daughter Card LOM Memory
Size:
4Mb
Type: [Flash PROM, EEPROM]:
Flash
Can user programs or operating system write
data to it during normal operation?
Yes, under software control.
Purpose? [boot code]
Contains LOM boot code and config data
How is data input to this memory?
Requires vendor provided firmware file and
loader program used during factory assembly or
possible field update. A system loaded with
arbitrary data in firmware memory would not
operate.
How is this memory write protected?
Software control.
Network Daughter Card FRU and Temperature Sensor
Size:
512bytes
Type: [Flash PROM, EEPROM]:
EEPROM
Can user programs or operating system write
data to it during normal operation?
No
Purpose? [boot code]
Contains firmware for FRU and temperature
sensor processing
How is data input to this memory?
Boot block is cable flashed only, FRU and
temperature registers are accessed via iDRAC6
I2C.
How is this memory write protected?
Software control.
H200 SRAM
Size:
128K Bytes
Type: [Flash PROM, EEPROM]:
Serial RAM
Can user programs or operating system write
data to it during normal operation?
No
Does it retain data when powered off?
Yes
Purpose? [boot code]
Storage configuration data
How is data input to this memory?
Host controller through SDRAM bus
How is this memory write protected?
Software write protected
H200 Flash
Size:
64Mb
Type: [Flash PROM, EEPROM]:
Flash
Can user programs or operating system write
data to it during normal operation?
No