CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
56
3.3.25
BIOS Device selection
With the introduction of COM Express Specifications rel. 2.0,
BIOS_DISABLE# signals have been doubled, in order to support SPI Devices
and allow for multiple Carrier implementations for external BIOS devices.
New BIOS selector signals, BIOS_DIS0# and BIOS_DIS1#, can be managed
using jumpers JP7 and JP8, according to what described in COM Express
specifications par. 4.3.12.
JP8
BIOS_DIS1#
JP7
BIOS_DIS0#
Boot configuration
Not Inserted
Not Inserted
Boot from COM Express Module
’
s internal BIOS
Not Inserted
Inserted
Boot from external LPC FWH (not implemented on this carrier
board)
Inserted
Not Inserted
Boot from SPI Flash on carrier board
Inserted
Inserted
Boot from COM Express Module
’
s internal BIOS and load
management data from carrier board
’
s SPI Flash