CC3200_15 Datasheet, PDF (57/71 Pages) Texas Instruments – CC3200 SimpleLink™ Wi-Fi® and Internet-of-Things Solution, a Single-Chip Wireless MCU

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CC3200
SWAS032F – JULY 2013 – REVISED FEBRUARY 2015
SoP values are sensed from the device pin during power up. This encoding determines the boot flow.
Before the device is taken out of reset, the SoP values are copied to a register and then determine the
device operation mode while powering up. These values determine the boot flow as well as the default
mapping for some of the pins (JTAG, SWD, UART0) Table 5-7 show the pull configurations.
Name
UARTLOAD
SoP[2]
Pullup
FUNCTIONAL_
2WJ
FUNCTIONAL_
4WJ
Pulldown
Pulldown
Table 5-7. CC32x0 Functional Configurations
SoP[1]
Pulldown
Pulldown
Pulldown
SoP[0]
Pulldown
Pullup
Pulldown
SoP Mode
LDfrUART
Fn2WJ
Fn4WJ
Comment
Factory/Lab Flash/SRAM load through UART.
Device waits indefinitely for UART to load code.
The SOP bits then must be toggled to configure
the device in functional mode. Also puts JTAG in
4-wire mode.
Functional development mode. In this mode, two-
pin SWD is available to the developer. TMS and
TCK are available for debugger connection.
Functional development mode. In this mode, four-
pin JTAG is available to the developer. TDI, TMS,
TCK, and TDO are available for debugger
connection.
The recommended value of pull resistors for SOP0 and SOP1 is 100 kΩ and 2.7 kΩ for SOP2. SOP2 can
be used by the application for other functions after chip power-up is complete. However, to avoid spurious
SOP values from being sensed at power-up, TI strongly recommends that the SOP2 pin be used only for
output signals. On the other hand, the SOP0 and SOP1 pins are multiplexed with WLAN analog test pins
and are not available for other functions.
Copyright © 2013–2015, Texas Instruments Incorporated
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