3 firmware redundancy – Artesyn MVME2500 ECC Installation and Use (August 2014) User Manual
Page 74
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Functional Description
MVME2500-ECC Installation and Use (6806800N30F)
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Factory Pre-Programming - Programming the SPI Flash usually takes a while. Ideally, the
SPI Flash should be pre-programmed in the factory before shipment.
ICT Programming - This programming is done on exposed test points using a bed of nails
tester.
4.6.3
Firmware Redundancy
The MVME2500-ECC uses two physically separate boot devices to provide boot firmware
redundancy. Although the P20x0 provides four SPI Bus chip-selects, the P20x0 is only capable
of booting from the SPI Device controlled by Chip Select 0. External SPI multiplexing logic is
implemented on the MVME2500-ECC to accomodate this chipset limitation.
The board power should be switched on before programming. The switch S2-8 should also be
powered on to successfully detect the SPI Flash chip.