Emerson MVME2500 manual Firmware Redundancy, Functional Description

Models: MVME2500

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Functional Description

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.

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.

4.6.3Firmware Redundancy

The MVME2500 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 to accomodate this chipset limitation.

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MVME2500 Installation and Use (6806800L01H)

Page 68
Image 68
Emerson MVME2500 manual Firmware Redundancy, Functional Description