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R
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R
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8
8
C
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2
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2
2
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0
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0
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–
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U
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l
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L
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K
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5
5
Redpine Signals, Inc. Proprietary and confidential Page 8
As shown in the figure above, the Connect-io-n module is integrated with
the Host using either UART or SPI interfaces
2
. The transmission and
reception of the data to/from the Host depends on the interface used to
connect the module as briefed below.
UART mode:
The Host transmits/receives raw data using UART interface when Connect-
io-n is configured for UART mode. The access to the TCP/IP stack in the
Wi-Fi module through UART is provided through AT commands.
SPI mode
2
:
Host transmits/receives raw data when RS9110-N-11-22 is configured for
SPI mode. A thin driver on the Host takes care of interacting with the Wi-
Fi module through the SPI Host interface.
2
The RS-R8C25-2200 Wi-Fi Starter Kit is available for the UART interface only. The
kit with SPI will be released in the future.
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