MAX-M10S - Integration manual
2 Receiver functionality
This section provides description of the receiver's functionality and features, and explains how to
configure the receiver for various uses.
2.1 Receiver configuration
This section explains the configurations done when taking the receiver into use.
MAX-M10S is fully configurable with UBX configuration interface keys. The configuration database
in the receiver's RAM holds the current configuration, which is used by the receiver at runtime. It is
constructed on startup of the receiver from several sources of configuration. For more information
on receiver configuration, see the interface description [
A configuration setting stored in the RAM remains effective until power-down or reset. The RAM
content is cleared by a RESET_N signal, a UBX-CFG-RST message excluding GNSS stop (resetMode
0x08) and GNSS start (resetMode 0x09), entering software standby mode, using external control
in power save mode (PSM) to enter the inactive state, and entering the off state of the PSM on/off
operation (PSMOO). It is therefore recommended to apply runtime configuration on both RAM and
battery-backed RAM (BBR) layers.
The configuration stored in BBR is also cleared by a RESET_N signal or a UBX-CFG-RST message
with reset mode set to a hardware reset (resetMode 0x00 and 0x04), but otherwise will be used as
long as the backup battery supply remains.
CAUTION
The configuration interface has changed from earlier u-blox positioning receivers.
Users must adopt the configuration interface described in this document.
The configuration interface settings are stored in a database consisting of separate configuration
items. An item is made up of a pair consisting of a key ID and a value. Related items are grouped
together and identified under a common group name: CFG-GROUP-*; a convention used in u-center
2 and within this document. Within u-center 2, a configuration group is identified as "Group name"
and the configuration item is identified as the "item name" in the "Device configuration" window.
The UBX messages available to change or poll the configurations are the UBX-CFG-VALSET, UBX-
CFG-VALGET, and UBX-CFG-VALDEL messages. For more information about these messages and
the configuration keys see the configuration interface section in the interface description [
].
2.1.1 Basic receiver configuration
This section summarizes the basic receiver configuration most commonly used.
2.1.1.1 Basic hardware configuration
The MAX-M10S receiver is configured with the default setting during the module production. The
receiver starts up and is fully operational as soon as proper power supply, communication interfaces
and antenna signal from the host application device are connected.
2.1.1.2 Internal LNA mode configuration
The MAX-M10S supports three modes for the internal low-noise amplifier (LNA). The normal-gain
mode is not recommended for MAX-M10S because the integrated LNA already provides sufficient
gain. Low-gain mode is the default. With an active antenna with high external gain, bypass mode
can be used. This can be configured at run time in BBR and RAM layers using the configuration item
CFG-HW-RF_LNA_MODE and applying a software reset by sending UBX-CFG-RST message. Refer
to
for more information.
UBX-20053088 - R03
2 Receiver functionality
Page 9 of 89
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