Linx EVM-900-PRO, Руководство по данным

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Description
The HumPRO
TM
Series is a frequency hopping
spread spectrum (FHSS) transceiver designed
for the reliable transfer of digital data. It has a
very fast lock time so that it can quickly wake
up, send data and go back to sleep, saving
power in battery-powered applications. The
module is available in the 915MHz frequency
band. A high-power 25dBm amplifier gives the
HumPRO-A exceptional range.
The module has several features that increase the data transfer reliability. It
ensures that no other modules are transmitting before it begins transmitting
data. Automatic acknowledgements ensure that the remote side received
valid data. Multiple hopping patterns enable several systems to operate
in proximity without interference. A standard UART interface is used for
module configuration and data transfer. A few simple serial commands are
all that are needed for configuration.
All modules have a unique 32-bit serial number that can be used as an
address. Source and destination addressing support point-to-point and
broadcast links. Address masking by the receiving module allows for
creating subnets. Other network topologies can also be implemented.
Housed in a tiny compact reflow-compatible SMD package, the transceiver
requires no external RF components except an antenna, which greatly
simplifies integration and lowers assembly costs. The module has obtained
FCC and Industry Canada modular certifications.
Features
• FHSS Algorithm
• Fast Lock (<30ms at 115kbps)
• Low power modes
• FCC and IC Pre-certified
• Simple UART interface
• No external RF parts required
• Tiny PLCC-44 footprint
• +25dBm TX, -108dBm RX
HumPRO-A
TM
Series 900MHz
RF Transceiver Module
Data Guide
Figure 1: Package Dimensions
Revised 2/22/2017
0.66 in
(16.66 mm)
1.01 in
(25.70 mm)
0.11 in
(2.90 mm)
40
Restore Factory Defaults
40
Using the Low Power Features
41
Baud Rate and Transmitter Output Power
42
The Command Data Interface
43
Reading from Registers
44
Writing to Registers
45
Command Length Optimization
46
Example Code for Encoding Read/Write Commands
48
The Command Data Interface Command Set
95
Typical Applications
96
Usage Guidelines for FCC Compliance
96
Additional Testing Requirements
97
Information to the user
98
Product Labeling
98
FCC RF Exposure Statement
98
Antenna Selection
100
Power Supply Requirements
100
Antenna Considerations
101
Interference Considerations
102
Pad Layout
102
Castellation Version Reference Design
103
Microstrip Details
104
Board Layout Guidelines
105
Helpful Application Notes from Linx
106
Production Guidelines
106
Hand Assembly
106
Automated Assembly
108
General Antenna Rules
110
Common Antenna Styles
112
Regulatory Considerations
114
Notes