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Hardware
Rev 2 Jun.16 25 4118903
Figure 2-11: SDIO Configuration
SPI1
The primary CF3 module’s SPI1 signal connects via a MUX to one of the following sources, as shown
in
Figure 2-12 :
• IOT Connector 0 (CN1000)—Default configuration
• IOT Connector 1 (CN1001)
The SPI1 interface configuration can be modified as detailed in Table 2-8 .
Figure 2-12: SPI1 Configuration
uSD Holder
(CN802)
Main CF3
SDIO
IoT Connector #0
(CN1000, slot IOT0)
Note: Green arrows show default
hardware configuration
Mux1
Table 2-8: SPI1 Interface Configuration Changes
Change type Change effect Method Change duration
Software Mux1—Use default or
alternate configuration. API command Modifies running
configuration until device
reboots or another change is
made.
Hardware Mux1—Use default or
alternate configuration Set resistor on Mux1:
•
Low—Alternate
•
High—Default
Selected configuration used
every time device boots up.
Main CF3
SPI1
IoT Connector #0
(CN1000, slot IOT0)
SPI
IoT Connector #1
(CN1001, slot IOT1)
SPI
Note: Green arrows show default
hardware configuration
Mux1