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Express-TL User's Guide
4.3.9
SPI Bus (BIOS only)
Name
Pin #
Description
SPI_CS#
B97
Chip select for Carrier Board SPI BIOS Flash.
SPI_MISO
A92
Data in to module from carrier board SPI BIOS flash.
SPI_MOSI
A95
Data out from module to carrier board SPI BIOS flash.
SPI_CLK
A94
Clock from module to carrier board SPI BIOS flash.
SPI_POWER
A91
Power supply for Carrier Board SPI – sourced from
Module – nominally 3.3V. The Module shall provide a
minimum of 100mA on SPI_POWER. Carriers shall use
less than 100mA of SPI_POWER. SPI_POWER shall only
be used to power SPI devices on the Carrier
BIOS_DIS0#
A34
Selection strap to determine the BIOS boot device.
BIOS_DIS1#
B88
Selection strap to determine the BIOS boot device.
Page 36
I/O
O 3.3VSB
I 3.3VSB
O 3.3VSB
O 3.3VSB
O P 3.3VSB
I
I
Copyright © 2022 ADLINK Technology, Inc.
PU / PD
Comment
PU 10K
3.3VSB
PU 10K
Carrier shall pull to GND or leave not- connected.
3.3VSB
PU 10K
Carrier shall pull to GND or leave not- connected
3.3VSB
PICMG COM.0 R3.0
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