CC3120MOD Datasheet, PDF (22/52 Pages) Texas Instruments – SimpleLink Wi-Fi CERTIFIED Network Processor Internet-of-Things Module Solution for MCU Applications

CC3120MOD
SWRS205 – MARCH 2017
www.ti.com
Table 5-5 lists the flash SPI timing parameters.
PARAMETER
NUMBER
I1
I2
I3
I4
I5
I6
I7
I8
I9
Table 5-5. Flash SPI Timing Parameters
PARAMETER
F
t_clk
t_LP
t_HT
D
t_IS
t_IH
t_OD
t_OH
PARAMETER NAME
Clock frequency
Clock period
Clock low period
Clock high period
Duty cycle
RX data setup time
RX data hold time
TX data output delay
TX data hold time
MIN
50
45%
1
2
MAX
20
25
25
55%
8.5
8
UNIT
MHz
ns
ns
ns
ns
ns
ns
ns
5.14 External Interfaces
5.14.1 SPI Host Interface
The device interfaces to an external host using the SPI. The CC3120MOD module can interrupt the
host using the HOST_INTR line to initiate the data transfer over the interface. The SPI host interface
can work up to a speed of 20 MHz.
Figure 5-10 shows the SPI host interface.
CC3120MOD (slave)
HOST_SPI_CLK
HOST_SPI_nCS
HOST_SPI_MISO
HOST_SPI_MOSI
HOST_INTR
nHIB
MCU
SPI_CLK
SPI_nCS
SPI_MISO
SPI_MOSI
INTR
GPIO
Figure 5-10. SPI Host Interface
Table 5-6 lists the SPI host interface pins.
PIN NAME
HOST_SPI_CLK
HOST_SPI_nCS
HOST_SPI_MOSI
HOST_INTR
HOST_SPI_MISO
nHIB
Table 5-6. SPI Host Interface
DESCRIPTION
Clock (up to 20 MHz) from MCU host to CC3120MOD module
CS (active low) signal from MCU host to CC3120MOD module
Data from MCU host to CC3120MOD module
Interrupt from CC3120MOD module to MCU host
Data from CC3120MOD module to MCU host
Active-low signal that commands the CC3120MOD module to enter hibernate mode (lowest power state)
22
Specifications
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