Linx Technologies TRM-915-R250 - Manual (Page 2)

Table of Contents
1 Description
2 Ordering Information
2 Absolute Maximum Ratings
3 Electrical Specifications
4 Pin Assignments
5 Pin Descriptions
6 Theory of Operation
7 Module Description
8 Module Operation
10 Low-Power States
12 Reset to Factory Default
12 Compatibility Mode
12 Automatic Gain Control and Manual Gain Control
12 Exception Engine
14 Networking Modes
20 Extended Preamble
22 Voltage Supply Rise Time
22 Using the Buffer Empty (BE) Line
22 Using the Exception (EX) Line
22 Using the Processing Incoming Packet (PR_PKT) Line
23 Receive Signal Strength Indication (RSSI)
24 Using the RESET Line
26 Using the Command Response (CMD_RSP) Line
27 The CMD Line
28 The UART Interface
28 Configuration Command Formatting
30 Module Configuration
34 Writing to Registers
34 Reading from Registers
Warning: Linx radio frequency ("RF") products may be
used to control machinery or devices remotely, including machinery
or devices that can cause death, bodily injuries, and/or property
damage if improperly or inadvertently triggered, particularly in industrial
settings or other applications implicating life-safety concerns. No Linx
Technologies product is intended for use in any application without
redundancies where the safety of life or property is at risk.
The customers and users of devices and machinery controlled with
RF products must understand and must use all appropriate safety
procedures in connection with the devices, including without limitation,
using appropriate safety procedures to prevent inadvertent triggering by
the user of the device and using appropriate security codes to prevent
triggering of the remote controlled machine or device by users of other
remote controllers.
Do not use this or any Linx product to trigger an action directly
from the data line or RSSI lines without a protocol or encoder/
decoder to validate the data. Without validation, any signal from
another unrelated transmitter in the environment received by the module
could inadvertently trigger the action.
All RF products are susceptible to RF interference that can prevent
communication. RF products without frequency agility or hopping
implemented are more subject to interference. This module does have
a frequency hopping protocol built in, but the developer should still be
aware of the risk of interference.
Do not use any Linx product over the limits in this data guide.
Excessive voltage or extended operation at the maximum voltage could
cause product failure. Exceeding the reflow temperature profile could
cause product failure which is not immediately evident.
Do not make any physical or electrical modifications to any Linx
product. This will void the warranty and regulatory and UL certifications
and may cause product failure which is not immediately evident.
!