SMART Embedded Computing MVME2500 Installation & Use Manual page 65

Table 3-20 SMT Configuration Switch Settings (continued)
SW2 DEFAULT
OFF
3
(WP Disabled)
OFF
4
(PMC)
OFF
5
(133 MHz)
OFF
6
(WP Enabled)
OFF
7
(Front)
OFF
8 (CPU Reset
Deasserted)
MVME2500 Installation and Use (6806800L01S)
Signal Name Description
SPI Flash Write-
Protect
FLASH_WP_N
ON: WP Enabled
OFF: WP Disabled
XMC or PMC
selection switch
PMC_XMC_
SEL ON: XMC
OFF: PMC
PCI frequency
selection
PMC_133
ON: 100 MHz
OFF: 133 MHz
Write-Protect Disable
switch
MASTER_WP_
DISABLED ON: WP disabled
OFF: WP enabled
User Defined switch
that will select if the
GBE PHY will
function on the front
GBE_MUX_
panel or on the
SEL
backplane
ON: RTM Genet
OFF: Front Panel
CPU Reset
Controls, LEDs, and Connectors
Notes
Hardware via S2-3 write-
protects the flash.
To disable the write-protect,
S2-3 should be OFF. You need
to set the U-Boot configuration
to successfully write on the
flash. For details, see
Programming Model on
page 117
Will select if XMC card or PMC
card is used
This option can only be used if
the PMC supports PCI-X
interface. The board will
automatically detect the
frequency of operation of the
PMC and will execute
accordingly. If the PMC
supports PCI-X speed, this
switch can be configured to run
either 100 MHz or 133 MHz
frequency.
For I2C write-protect only.
Switching it ON will disable the
write-protect.
Two GbE ports cannot be used
at the same time. The front
panel GENET 2 and RTM
GENET 2 shares same
controller and PHY. When the
S2-7 can be set to select the
Ethernet will be routed either to
the front panel or to the RTM.
Should be OFF for normal
operation.
.
65