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MSC C6C-AL
MSC C6C-AL User Manual
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2.12.15 SPI Interface
Signal
Pin
Type
Signal
Level
Power
Rail
Rem.
/ Tol.
PU/PD/SR
Description
Source /
Target
SPI_CS#
O
CMOS
1.8V Sus 1.8V
ePU = 47 KΩ
eSR = 22 Ω
Chip select for Carrier Board SPI - may be sourced from chipset SPI0 or SPI1.
AL SOC
SPI_MISO
I
CMOS
1.8V Sus 1.8V
eSR = 22 Ω
Data in to Module from Carrier SPI.
AL SOC
SPI_MOSI
O
CMOS
1.8V Sus 1.8V
eSR = 22 Ω
Data out from Module to Carrier SPI.
AL SOC
SPI_CLK
O
CMOS
1.8V Sus 1.8V
eSR = 22 Ω
Clock from Module to Carrier SPI.
AL SOC
SPI_POWER O
Power
1.8V Sus
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_DIS
[1:0]#
I
CMOS 3.3V Sus 3.3V
ePU = 10 KΩ Selection straps to determine the BIOS boot device.
BIOS_DIS[1:0]# SPI_CS1#
Destination
SPI_CS0#
Destination
Carrier
SPI_CS
#
SPI
Descriptor
BIOS
Entry
1
1
Module
Module
HIGH
Module
SPI0/SPI1
1
0
Module
Module
HIGH
Module
Carrier FWH
0
1
Module
Carrier
SPI0
Carrier
SPI0/SPI1
0
0
Carrier
Module
SPI1
Module
SPI0/SPI1
NOTICE: SPI power rail is 1.8V.