JTAG and the PIC32
PIC32 Overview
PIC32 devices provide a complete range of programming and diagnostic features that can increase the flexibility of any application using them. These features allow system designers to include:
- Simplified field programming using the two-wire In-Circuit Serial Programming™ (ICSP) interface
- Debugging using ICSP
- Programming and debugging through Joint Test Action Group (JTAG) interface
- Incorporates an Enhanced JTAG (EJTAG) extension of standard JTAG interfaces
- JTAG Boundary scan testing for device and board diagnostics
PIC32 Programming/Debugging Resources
PIC32 devices incorporate two programming/diagnostic modules and a trace controller that provides a range of debugging functions to the application developer.
JTAG Pins
| Pin Name | JTAG Pin Description |
|---|---|
| TMS | Test Mode Select |
| TCK | Test Clock Input |
| TDI | Test Data Input |
| TDO | Test Data Output |
| TRST | Test Reset (optional) |
In Circuit Serial Programming (ICSP) Pins
| Pin Name | ICSP Pin Description |
|---|---|
| PGED1 | Program Data I/O for Channel 1 |
| PGEC1 | Program Clock Input Channel 1 |
| PGED2 | Program Data I/O for Channel 2 |
| PDEC2 | Program Clock Input Channel 2 |
Trace Pins
| Pin Name | Trace Pin Description |
|---|---|
| TRCLK | Trace Clock Output |
| TRD0 | Trace Data Output Bit 0 |
| TRD1 | Trace Data Output Bit 1 |
| TRD2 | Trace Data Output Bit 2 |
| TRD3 | Trace Data Output Bit 3 |
