User's Guide
Table Of Contents
- Description
- Features
- Ordering Information
- Absolute Maximum Ratings
- Electrical Specifications
- Typical Performance Graphs
- Pin Assignments
- Pin Descriptions
- Pre-Certified Module Pin Assignments
- Module Dimensions
- Theory of Operation
- Module Description
- Overview
- Addressing Modes
- Automatic Addressing
- Address Register Use
- Acknowledgements and Assured Delivery
- Frequency Hopping Spread Spectrum
- Compatibility with the 250 Series
- Networking
- Transmitting Packets
- Receiving Packets
- Using the Buffer Empty (BE) Line
- Exception Engine
- Carrier Sense Multiple Access (CSMA)
- Using the Command Response (CRESP) Line
- Using the CMD Line
- External Amplifier Control
- AES Encryption
- Using the MODE_IND Line
- Using the PB Line
- Restore Factory Defaults
- Using the Low Power Features
- The Command Data Interface
- Reading from Registers
- Writing to Registers
- Command Length Optimization
- Example Code for Encoding Read/Write Commands
- The Command Data Interface Command Set
- Typical Applications
- Usage Guidelines for FCC Compliance
- Additional Testing Requirements
- Information to the user
- Product Labeling
- FCC RF Exposure Statement
- Antenna Selection
- Castellation Version Reference Design
- Power Supply Requirements
- Antenna Considerations
- Interference Considerations
- Pad Layout
- Microstrip Details
- Board Layout Guidelines
- Helpful Application Notes from Linx
- Production Guidelines
- Hand Assembly
- Automated Assembly
- General Antenna Rules
- Common Antenna Styles
- Regulatory Considerations
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100 101
Castellation Version Reference Design
The castellation connection for the antenna on the pre-certified version
allows the use of embedded antennas as well as removes the cost of
a cable assembly for the u.FL connector. However, the PCB design
and layer stack must follow one of the reference designs for the
certification on the HUM-900-PRO-CAS to be valid. Figure 108 shows
the PCB layer stack that should be used. Figure 109 shows the layout and
routing designs for the different antenna options. Please see the antenna
data sheets for specific ground plane counterpoise requirements.
Top Layer
Dielectric 1
Mid-Layer 1
Dielectric 2
Mid-Layer 2
Dielectric 3
Bottom Layer
Layer Name Thickness Material
1.4mil
1.4mil
1.4mil
1.4mil
14.00mil
14.00mil
28.00mil
Copper
Copper
Copper
Copper
FR-4 (Er = 4.6)
FR-4 (Er = 4.6)
FR-4 (Er = 4.6)
140
200
165
470
230
230
165
ANT-916-SP
ANT-916-PW-LP
ANT-916-PW-RA
ANT-916-CW-QW
ANT-916-CW-HW
ANT-916-WRT-RPS
Microstrip Width = 24mil
Ground plane on Mid-Layer 1
Units are in mils
619
361
72
35
35
CONREVSMA003.062
380
320
216
Figure 109: HumPRO
TM
Series Transceiver Castellation Version Reference Design
Figure 108: HumPRO
TM
Series Transceiver Castellation Version Reference Design PCB Stack
Note: The PCB design and layer stack for the HUM-900-RC-CAS must
follow these reference designs for the pre-certification to be valid.
The HUM-900-RC-UFL and the HUM-900-RC-CAS must use one of
the antennas in Figure 44 in order for the certification to be valid.
The HUM-900-RC and HUM-2.4-RC have not been tested and require
full compliance testing in the end product as it will go to market.
All modules require unintentional radiator compliance testing in the end
product as it will go to market.