MattairTech MT-X1, Manual

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MT­X1 Manual
Configuration
Configuration
The MT­X1 PDI programmer, serial bridge, and other features can be configured by entering
configuration mode. This configuration is stored in non­volatile EEPROM memory. Configuration mode
requires an ANSI terminal emulator. Configuration options are highlighted by using the up and down
arrow keys, and selected using the enter key. Some dialogs are for entering numbers in hexadecimal.
Here, the left and right arrow keys and backspace are used. The menu system is structured as
follows:
●
Serial Speed
(Serial bridge speed selection)
●
List of selectable speeds: 2400, 9600, 19.2K, 38.4K, 50.0K, 76.8K, 125K, 250K, 500K, 1M, 2M
●
Manual (when selected, configure using Manual Settings below)
●
Manual Settings
●
Baud Rate Register (enter value in hex)
●
Clock 2X (async mode only)
●
Serial Mode
●
Asynchronous or synchronous
●
Sleep Mode (Which sleep mode is used when USB is disconnected or suspended)
●
Power Down or Standby
●
Ready Signal (USB ready signal is open­drain active low on XCK pin from USB AVR)
●
Disabled or Enabled
●
AVRISPmkII (select which software will be interfacing with the MT­X1 PDI programmer)
●
AVR Studio or AVRDUDE
●
Credits (displays list of firmware authors)
The USB AVR automatically enters sleep mode when the USB cable is disconnected or the
USB bus is suspended. Sleep mode is by default set to Power Down, which provides for the lowest
current consumption.
The USB ready signal is useful when the XMEGA needs to know when the USB cable is
disconnected or the USB bus suspended. The signal is open­drain active­low from the USB AVR XCK
line, which may also be used for synchronous serial operation. The XMEGA must enable the pullup on
this line before reading it. If it reads low, USB is enumerated and ready. Otherwise, it will read high. If
synchronous operation in used, the XCK clock signal will override this. However, when USB is
disconnected or suspended, the clock will stop and the the line driven low.
When changing serial speeds, be sure to also change the speed in the XMEGA.
June 2, 2015 24 http://www.mattairtech.com/