Connecting to a TPI Target

The recommended pinout for the 6-pin TPI connector is shown in Figure 1.

Connection to a 6-pin 100-mil TPI Header

Use the 6-pin 100-mil tap on the flat cable (included in some kits) to connect to a standard 100-mil TPI header.

Connection to a 6-pin 50-mil TPI Header

Use the adapter board (included in some kits) to connect to a standard 50-mil TPI header.

Connection to a Custom 100-mil Header

The 10-pin mini-squid cable should be used to connect between the Power Debugger AVR connector port and the target board. Six connections are required, as described in the table below.

Table 1. Power Debugger TPI Pin Mapping
Power Debugger AVR PORT Pins Target Pins Mini-Squid Pin TPI Pinout
Pin 1 (TCK) CLOCK 1 3
Pin 2 (GND) GND 2 6
Pin 3 (TDO) DATA 3 1
Pin 4 (VTG) VTG 4 2
Pin 5 (TMS)   5  
Pin 6 (nSRST) /RESET 6 5
Pin 7 (not connected)   7  
Pin 8 (nTRST)   8  
Pin 9 (TDI)   9  
Pin 10 (GND)   0