3.10 Connecting to Data Gateway Interface
The Atmel-ICE supports a limited Data Gateway Interface (DGI) when debugging and programming is not in use. Functionality is identical to that found on Microchip Xplained Pro kits powered by the Microchip EDBG device.
The Data Gateway Interface is an interface for streaming data from the target device to a computer. This is meant as an aid in application debugging as well as for a demonstration of features in the application running on the target device.
DGI consists of multiple channels for data streaming. The Atmel-ICE supports the following modes:
- USART
- SPI
Table 3-9. Atmel-ICE DGI USART Pinout AVR Port SAM Port DGI USART Pin Description 3 6 TX Transmit pin from Atmel-ICE to the target device 4 1 VTG Target voltage (reference voltage) 8 7 RX Receive pin from the target device to Atmel-ICE 9 8 CLK USART clock 2, 10 3, 5, 9 GND Ground
| AVR Port | SAM Port | DGI SPI Pin | Description |
|---|---|---|---|
| 1 | 4 | SCK | SPI clock |
| 3 | 6 | MISO | Master In Slave Out |
| 4 | 1 | VTG | Target voltage (reference voltage) |
| 5 | 2 | nCS | Chip select active low |
| 9 | 8 | MOSI | Master Out Slave In |
| 2, 10 | 3, 5, 9 | GND | Ground |
Important: SPI and USART
interfaces cannot be used simultaneously.
Important: DGI and programming or
debugging cannot be used simultaneously.