Datasheet

CC3100 (slave) MCU
HOST_SPI_CLK
HOST_SPI_nCS
HOST_SPI_MISO
HOST_SPI_MOSI
HOST_INTR
SPI_CLK
SPI_nCS
SPI_MISO
SPI_MOSI
INTR
SWAS031-027
GPIO
nHIB
CC3100
www.ti.com SWAS031D –JUNE 2013–REVISED FEBRUARY 2015
Figure 4-16. SPI Host Interface
Table 4-13 lists the SPI host interface pins.
Table 4-13. SPI Host Interface
Pin Name Description
HOST_SPI_CLK Clock (up to 20 MHz) from MCU host to CC3100 device
HOST_SPI_nCS CS (active low) signal from MCU host to CC3100 device
HOST_SPI_MOSI Data from MCU host to CC3100 device
HOST_INTR Interrupt from CC3100 device to MCU host
HOST_SPI_MISO Data from CC3100 device to MCU host
nHIB Active-low signal that commands the CC3100 device to enter hibernate mode (lowest power
state)
4.13 Host UART
The SimpleLink device requires the UART configuration described in Table 4-14.
Table 4-14. SimpleLink UART Configuration
Property Supported CC3100 Configuration
Baud rate 115200 bps, no auto-baud rate detection, can be changed by the host up to 3 Mbps using a special command
Data bits 8 bits
Flow control CTS/RTS
Parity None
Stop bits 1
Bit order LSBit first
Host interrupt polarity Active high
Host interrupt mode Rising edge or level 1
Endianness Little-endian only
(1)
(1) The SimpleLink device does not support automatic detection of the host length while using the UART interface.
Copyright © 2013–2015, Texas Instruments Incorporated Specifications 23
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