按照官方的参考设计制作了4层最小模块板,DCDC_ANA_SW 和DCDC_DIG_SW引脚对应电路输出电压分别是1.2和1.96V电压,应该是正常的,blink程序也能下载并正常运行,但是DCDC_PA_SW_P 相关的40-41-42三个引脚无电压输出,关键是DCDC_PA_SW_P也没有间隙性脉冲相互(我测了launchpad开发板,这个引脚是间隙性信号的 )
请问什么问题??DCDC_PA_SW_P上就是一个1uh的电感,应该没有其他电路,没有任何现象。
是否新的CC3200需要先往里面烧特定程序才行?
chun chen2:
还有,launchpad上的CC3200怎么死活吹不下来,芯片外面都化了,底下还连着,
Terry Han:
关于CC3200引脚硬件电源部分->P45/P52引脚-GPIO_31/32使用注意事项:
In CC3200 LP design, a DC/DC (U8, TPS61097) was used for generating VCC_DCDC_3V3 only to supply VDD_ANA2 (PIN47 of CC3200), which is for the internal flash.
This is to enable the Launch Pad run from 2xAA alkaline battery.
Also 3.3V supply to VDD_ANA2 is needed only for the pre-production devices. With Production devices, design can get rid of the additional DCDC even while operating from battery.
Terry Han:
如果要将CC3200正常的启动内部的M4内核和 NWP网络处理器内核,则需要下载ServicePack和应用APP.bin程序