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DMT80600T104-31WT User Guide
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3
System Power
The product is powered by an 8-pin interface marked as “UART0&Power”. There are two short-circuit pads on the board,
which is marked as “ON=5V, OFF=6V-42V”
Status
Voltage
OFF
6V-42V
ON
5V
UART0&POWER Interface
The TXD and RXD pins of UART0&Power are wired to “UART0&Power” connector. The UART0&Power supports
TTL or RS232 voltage level. The definitions of the 8 pins of the UART0&Power connector are as marked on the board:
VCC, VCC, NC (No Connect), TXD (output from the board), RXD (input to the board), RXD, GND and GND. There
are two short-circuit pads on the board, which is marked as “ON=TTL, OFF=RS232”.
Status
Voltage level
OFF
RS232
ON
TTL
UART1&2&4Interface
The TXD and RXD pins are wired to “UART1&2&4” connector. The interface supports RS232 voltage level. The
definitions of the 8 pins of the UART1&2&4 connector are as marked on the board: RXD2, TXD2, RXD1, RXD1,
TXD1, GND, RXD4 and TXD4.
External speaker interface
The product provides one 4-pin 2.54mm-spacing socket connector marked “SPEAKER”. The schematic diagram is as
follows:
Microphone interface
There are two wire interfaces near the top right corner of the core module marked as “MIC”.
