ZHCSM61C November 2014 – September 2020 CC3200MOD
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
The CC3200 device implements a sense-on-power (SoP) scheme to determine the device operation mode. The device can be configured to power up in one of the three following modes:
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 9-6 provides the pull configurations.
NAME | SOP2 | SOP1 | SOP0 | SOP MODE | COMMENT |
---|---|---|---|---|---|
UARTLOAD | Pullup | Pulldown | Pulldown | LDfrUART | 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_2WJ | Pulldown | Pulldown | Pullup | Fn2WJ | Functional development mode. In this mode, 2-pin SWD is available to the developer. TMS and TCK are available for debugger connection. |
FUNCTIONAL_4WJ | Pulldown | Pulldown | Pulldown | Fn4WJ | Functional development mode. In this mode, 4-pin JTAG is available to the developer. TDI, TMS, TCK, and TDO are available for debugger connection. |
There is an internal pull resistor for SOP0 and SOP1 with value of 100 kΩ. There is no need for any external pulls. TI recommends a 2.7-kΩ pull resistor 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.