Publication No. SBC329-HRM/1
Installation and Power Up/Reset 39
XMC Speed
This allows the speed (Gen1 @ 2.5 Gbits/second, Gen2 @ 5 Gbits/second or Gen3 @
8 Gbits/second) of the XMC link to be set.
NOTE
Gen3 operation is not guaranteed, and its operation should be validated by the end user before
use.
Dataplane Configuration
This configures the backplane Dataplane PCIe configuration.
Allowable configurations are x8, x4+x4, x2+x2+x2+x2
NOTE
If an operating system has configured the SBC329 for NT operation, it is not possible to alter
the backplane configuration using this menu, and the option will be greyed-out. In this
configuration, only the operating system can change this setting.
DPx Speed
This allows the speed (Gen1 @ 2.5 Gbits/second, Gen2 @ 5 Gbits/second or Gen2 @
5 Gbits/second) of each Expansion Plane link to be set. This is useful when it is
desirable to force the SBC329 to operate at a lower link speed. For instance, when
cables are being used in a development backplane to connect the Expansion Plane,
forcing Gen1 mode using this method is recommended.
NOTE
Gen3 operation is not guaranteed, and its operation should be validated by the end user before
use.
Program EEPROM
Once the required PCIe switch settings have been made, select this option to
program the configuration into the EEPROM. The new configuration is only
activated
after
the board has been reset or power cycled.
NOTE
Ensure that the EEPROM is write-enabled before selecting this option, i.e. a jumper is fitted on
the
Configuration EEPROM Write Enable Link (P6)
, and the backplane NVMRO signal is inactive.
Lock EEPROM
This locks the EEPROM. When locked, the EEPROM
cannot
be overwritten by third
party software (such as PLX development tools), regardless of the state of the write
protect links and NVMRO.
By default, the EEPROM is unlocked.
Unlock EEPROM
This unlocks previously locked EEPROM. The EEPROM is unlocked by default.
NOTE
Once locked, the EEPROM can only be unlocked when it is write-enabled, i.e. a jumper is fitted
on the Configuration EEPROM Write Enable Link (P6), and the backplane NVMRO signal is
inactive.