Murata Electronics North America CCT24 Manual Do Utilizador

Page 3 of 90

CCT24

1.0

Introduction ...................................................................................................................................... 5

1.1

Why Spread Spectrum?................................................................................................................ 5

1.2

Frequency Hopping versus Direct Sequence ............................................................................... 6

2.0

CCT24 Radio Operation................................................................................................................... 7

2.1

Network Synchronization and Registration................................................................................... 7

2.2

Authentication ............................................................................................................................... 8

2.3

Serial Port Modes ......................................................................................................................... 8

2.4

SPI Port Modes............................................................................................................................. 9

2.5

RF Data Communications............................................................................................................. 9

2.6

RF Transmission Error Control ................................................................................................... 10

2.7

Transmitter Power Management ................................................................................................ 10

2.8

Network Configurations .............................................................................................................. 10

2.8.1

Point-to-Point Network Operation............................................................................................ 10

2.8.2

Point-to-Multipoint Network Operation .................................................................................... 11

2.8.3

Multipoint Peer-to-Peer Network Operation ............................................................................ 11

2.8.4

Tree Routing System Operation ................................................................................................. 12

2.9

Full-Duplex Serial Data Communications ................................................................................... 12

2.10

Channel Access....................................................................................................................... 12

2.10.1

Polling Mode ............................................................................................................................ 13

2.10.2

CSMA Mode ............................................................................................................................ 13

2.10.3

TDMA Modes........................................................................................................................... 14

2.11

Transmission Configuration Planning ......................................................................................... 15

2.11.1

TDMA Throughput ................................................................................................................... 15

2.11.2

Polling Throughput .................................................................................................................. 16

2.11.3

CSMA Throughput ................................................................................................................... 16

2.11.4

Latency .................................................................................................................................... 17

2.11.5

Configuration Validation .......................................................................................................... 18

2.12

Tree-Routing Systems ................................................................................................................ 20

2.12.1

Example Tree-Routing System................................................................................................ 20

2.12.2

Tree-Routing System Networks............................................................................................... 22

2.12.3

Tree-Routing System Addressing ........................................................................................... 22

2.12.4

Tree-Routing System Implementation Options ....................................................................... 23

2.13

Serial Port Operation .................................................................................................................. 25

2.14

SPI Port Operation...................................................................................................................... 26

2.15

Sleep Modes ............................................................................................................................... 29

2.16

Encryption ................................................................................................................................... 31

2.17

Synchronizing Co-located Bases................................................................................................ 31

3.0

CCT24 Hardware ........................................................................................................................... 33

3.1

Specifications.............................................................................................................................. 34

3.2

Module Interface ......................................................................................................................... 35

3.3

CCT24 Antenna Connector ........................................................................................................ 36

3.4

Input Voltages ............................................................................................................................. 37

3.5

ESD and Transient Protection .................................................................................................... 37

3.6

Interfacing to 5 V Logic Systems ................................................................................................ 37

3.7

Power-On Reset Requirements.................................................................................................. 38

3.8

Mounting and Enclosures ........................................................................................................... 38

3.9

Labeling and Notices .................................................................................................................. 38