cc1310下载端口引脚

CC1310 开发板，一开始认为下载端口需要 JTAG_TMS JTAG_SCK JTAG_TDI JTAG_TDO,  这也是标准的JTAG口，可是今天再看到另一个官网上的原理图时，发现只需要JTAG_TMS,JTAG_TCK口，  我用开发板试了，确实没问题， 可以下载程序，在线调试，但是TDI  TDO 是干嘛的，  还有就是  TMS和TCK口可以下载程序也说不通呀，一个是模式选择口，一个是参考时钟。完全混乱了。   

有2线jtag和4线jtag之分. 你的仿真器是xds100V3就可以用2线,如果是xds110就需要四线.

数据手册上关于jtag有详细讲解,有兴趣直接看,关于2线的描述如下:

http://www.ti.com/lit/pdf/swcu117

cJTAG
This module implements IEEE 1149.7 compliant compact JTAG (cJTAG) adapter, which runs a 2-pin
communication protocol on top of a IEEE 1149.1 JTAG test access port (TAP). The 2-pin JTAG mode
using only TCK and TMS I/O pads is the default configuration after power up. The cJTAG configuration in
CC26xx and CC13xx devices implements a subset of class 4 feature scan modes. Class 4 inherits
features from classes 0, 1, 2, and 3 (except the features mentioned in Table 5-3.) Figure 5-3 shows
conceptual diagram of the cJTAG module.

Class 0: Strict compliance to IEEE 1149.1 specification with internal TAP selection
• Class 1: Adds cJTAG command protocol, some optional discrete commands
• Class 2: Adds serial select capability
• Class 3: Adds JTAG star configuration, controller IDs and scan selection directives
• Class 4: Adds advanced scan protocols
Table 5-2 lists the features in IEEE 1149.7 that are supported in CC26xx and CC13xx devices. The
cJTAG module in the CC26xx and CC13xx devices supports 12 scan formats. The scan formats use a
variety of compression protocols ranging from 1 to 4 clocks per bit to serialize each packet.

http://processors.wiki.ti.com/index.php/CC13xx_CC26xx_Tools_Overview#Debuggers

看你用什么仿真器，不是所有仿真器都能支持2线制，有的只能用4线

另外还可以通过串口烧录代码的。

进入串口烧录默认使能引脚是哪个呢，求指点。