First task is to create the JTAG connector, which will be the connection from the Real World into the MSP430. The JTAG pins:
This is detailed in "MSP430 Hardware Tools" page 20. (Checked in under Datasheets/MSP430/)
Pin | JTAG | MSP430 | Pin |
---|---|---|---|
1 | TDO/TDI | TDO/TDI | 21 |
2 | Vcc Tool | Vcc | 23* |
3 | TDI | TDI | 20 |
4 | Vcc Target | Vcc | 23* |
5 | TMS | TMS | 18 |
6 | -- | -- | -- |
7 | TCK | TCK | 17 |
8 | TEST | TEST | 22 |
9 | GND | GND | -- |
10 | -- | -- | -- |
11 | /RST | GND | -- |
12 | -- | -- | -- |
13 | -- | -- | -- |
14 | -- | -- | -- |
*Note: JTAG pins 2 and 4 are routed through a jumper that allows the user to select whether the MSP430 is powered locally or from the JTAG programmer. Connect JTAG:2 to MSP:23 to pull power from the programmer, Connect JTAG:4 to MSP:23 if the MSP430 is self-powered.