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2.4. Specifying the boot BIOS (CN_HDR1 setting)

he COM Express module/Type6 typically supports the BIOS disable signal

(BIOS_DIS1# and BIOS_DIS0#) and SPI_CS# signal. The BIOS disable signals are

set on the carrier board.

The combination of these signals is used to define booting from module SPI or carrier

board SPI/FWH. Below table shows the signals and jumper settings on the CN_HDR1

headers.

COM Express Connector Type6

BIOS_DISABLE1#

(CN2_B88)

BIOS_DISABLE0#

(CN2_A34)

CN_HDR1

(Pin1,3,5)

CN_HDR1

(Pin2,4,6)

PCH CS# destination

BIOS

Descriptor

(Default)

1-3

(Default)

2-4

(Default)

Module SPI @ CS0#

Carry SPI @ CS1#

@ Module

SPI

(Default)

3-5 4-6

Module SPI @ CS1#

Carry SPI @ CS0#

@ Carry SPI

0 0

Open Carry FWH Carry FWH

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 62 63

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Acrosser ACM-B6360 Bedienungsanleitung Seite 17