User Guide
Table Of Contents
- APPLICABILITY TABLE
- CONTENTS
- 1. Introduction
- 2. General Product Description
- 3. PINS ALLOCATION
- 4. Power Supply
- 5. DIGITAl SECTION
- 6. RF SECTION
- 7. AUDIO SECTION
- 8. GNSS Section
- 9. Mechanical Design
- 10. APPLICATION PCB Design
- 11. PACKAGING
- 12. Conformity Assessment Issues
- 13. PRODUCT AND SAFETY INFORMATION
- 14. GLOSSARY
- 15. Document History
ME910G1 Hardware Design Guide
1VV0301593 Rev.15 Page
50 of 100 2022-08-23
Not Subject to NDA
Note
: According to V.24, some signal names refer to the application
side, so on the ME910G1 side these signal are in
the opposite
direction:
TXD on the application side is connected to the receiving line (here
named C103/TXD)
RXD on the application side will be connected to the transmit line
(here named C104/RXD).
For reduced
implementation, only the TXD, RXD lines can be
connected, the other lines can be left open.
To avoid a back powering it is recommended to prevent any HIGH
logic level signals from being
applied to the digital pins of the
ME910G1
when the module is powered off or during an ON/OFF
transition.
5.7.3.2. Modem Serial Port 2 (USIF1)
The auxiliary serial port on the ME910G1 is a CMOS1.8V with only the RX and TX signals.
The signals of the ME910G1 serial port are:
PAD
Signal
I/O
Function
Type
NOTE
D15
TX_AUX O Auxiliary UART (TX Data to DTE) CMOS 1.8V
Shared with
SPI_MOSI
E15
RX_AUX I Auxiliary UART (RX Data from DTE) CMOS 1.8V
Shared with
SPI_MISO
Table 26:
ME910G1 serial port signals
Note
:
Due to the shared functions, TX_AUX/RX_AUX port and SPI port
cannot be used simultanously.
In order to avoid a back powering it is recommended to prevent any
HIGH logic level signal from being applied to the digital pins of the
ME910G1
when the module is powered off or during an ON/OFF
transition.
Refer to ME910G1 series AT command reference gu
ide for port
configuration.