MT84G User’s Manual V0.1
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14
2. Interface
2.1 Introduction
MT84G provides UART serial interface and multiple USB interfaces to
communicate with the host. As a result it is possible to establish bi-directional
communication which enables barcode data receiving and command sending
between MT84G and host at the same time.
2.2 Interface Options
By default interface is USB HID. Scanning below configuration barcode will
switch MT84G among different interfaces (UART/USB VCP/USB HID). When
USB and UART are simultaneously needed, please select HID & UART. After
switching interface, please wait for initialization to finish before operation.
UART
USB HID*
USB VCP
HID & UART
2.2 UART
The UART communication of MT84G is based on TTL level signals. For RS232
communication, a conversion circuit must be added externally.
Parameter
Default
Serial communication type
UART (TTL-232)