EVB71122(2015) Просмотр технического описания (PDF) - Melexis Microelectronic Systems

Номер в каталоге

Компоненты Описание

производитель

EVB71122
(Rev.:2015)

300 to 930MHz Receiver Evaluation Board Description

Melexis Microelectronic Systems  

EVB71122

300 to 930MHz Receiver

Evaluation Board Description

Document Content

1 Theory of Operation...................................................................................................4

1.1 General........................................................................................................................... 4

1.2 EVB Data Overview ........................................................................................................ 4

1.3 Block Diagram ................................................................................................................ 6

1.4 Enable/Disable in ABC Mode .......................................................................................... 7

1.5 Demodulation Selection in ABC Mode ............................................................................ 7

1.6 Programming Modes ...................................................................................................... 7

1.7 Preconfigured Frequencies in ABC Mode ....................................................................... 7

2 Functional Description ..............................................................................................8

2.1 Frequency Planning ........................................................................................................ 8

2.2 Calculation of Counter Settings....................................................................................... 9

2.2.1 Calculation of LO1 and IF1 frequency for Low Frequency Bands ................................................9

2.2.2 Calculation of LO1 and IF1 frequency for High Frequency Bands..............................................10

2.2.3 Counter Setting Examples for SPI Mode ....................................................................................10

2.2.4 Counter Settings in ABC Mode – 8+1 Preconfigured Channels..................................................11

2.2.5 PLL Counter Ranges...................................................................................................................12

2.3 SPI Description ............................................................................................................. 12

2.3.1 General .......................................................................................................................................12

2.3.2 Read / Write Sequences .............................................................................................................13

2.3.3 Serial Programming Interface Timing..........................................................................................13

3 Register Description ................................................................................................14

3.1 Register Overview ........................................................................................................ 14

3.1.1 Control Word R0 .........................................................................................................................16

3.1.2 Control Word R1 .........................................................................................................................17

3.1.3 Control Word R2 .........................................................................................................................18

3.1.4 Control Word R3 .........................................................................................................................18

3.1.5 Control Word R4 .........................................................................................................................19

3.1.6 Control Word R5 .........................................................................................................................19

3.1.7 Control Word R6 .........................................................................................................................19

3.1.8 Control Word R7 (Read-only Register) .......................................................................................20

4 Application Circuits for SPI Mode ..........................................................................21

4.1 Averaging Data Slicer Configured for Bi-Phase Codes ................................................. 21

4.2 Peak Detector Data Slicer Configured for NRZ Codes .................................................. 23

4.2.1 Board Component Values List (SPI mode) .................................................................................25

5 Hardware and Software Requirements ..................................................................26

6 Evaluation Board Layouts .......................................................................................27

7 Package Description................................................................................................28

39012 71122 01

Rev. 005

Page 2 of 31

EVB Description

Nov/15

Share Link: