Data Sheet

SIGNAL AND PINS
UART INTERFACES
GM01Q DATASHEET PROPRIETARY 24
SEQUANS Communications
4.2 UART Interfaces
Figure 4-1 represents the typical implementation for the hardware flow
control for UART0, UART1 and UART2. TXD and RXD signals are
mandatory. RTS and CTS are strongly recommended. The other signals are
optional.
GM01Q is designed for use as DCE (Data Communication Equipment).
Based on the conventions for DCE-DTE connections, the DCE device will
communicate with the customer application (DTE) using the following
signals:
• Port TXD on Application sends data to the module’s TXD signal line.
• Port RXD on Application receives data from the module’s RXD signal line.
Figure 4-1: UART0, UART1 and UART2 Signals Convention and Flow
Control
'DϬϭY
ƉƉůŝĐĂƚŝŽŶ
dyϬϭϮ dy
ZyϬϭϮ Zy
Zd^ϬϭϮ Zd^
d^ϬϭϮ d^
Z/E'Ϭ Z/E'