MRF49XA datasheet(97/102 Pages) MICROCHIP

97 / 102 page

Preliminary

DS70590B-page 95

MRF49XA

INDEX

Absolute Maximum Ratings ................................................ 77

AC Characteristics

Other Timing Parameters............................................ 81

PLL Parameters .......................................................... 80

Receiver...................................................................... 79

Transmitter.................................................................. 80

Antenna Design Considerations ......................................... 72

Antenna/Balun .................................................................... 71

Automatic Frequency Control (AFC)............................. 12, 49

Baseband Features............................................................... 1

Baseband Filters (BBF)....................................................... 12

Baseband/Data Filtering ..................................................... 54

Bill of Materials.................................................................... 75

Block Diagrams

AFC Circuit for Frequency Offset Correction .............. 50

Analog RSSI Voltage vs. RF Input Power................... 13

Application Circuit ....................................................... 71

Balun Circuit................................................................ 71

DIO Logic .................................................................... 56

Four Basic Copper FR4 Layers .................................. 72

Functional Node............................................................ 6

Logic Connection Between Power Control Bits .......... 61

MCU to MRF49XA Interface ......................................... 6

MRF49XA Architectural ................................................ 8

MRF49XA Interrupt Generation Logic......................... 53

RESET Pin Internal Connection.................................. 45

Two Basic Copper FR4 Layers ................................... 72

TX Register Before Transmit ...................................... 64

TX Register During Transmit ...................................... 65

Clock Output ......................................................................... 9

Clock Recovery Circuit (CLKRC) ........................................ 12

Crystal Oscillator................................................................. 12

Crystal Oscillator and Clock Output .................................... 46

Crystal Selection Guidelines ............................................... 48

Current Consumption.......................................................... 78

Customer Change Notification Service ............................... 97

Customer Support............................................................... 97

Data

Data In .......................................................................... 9

Data Out........................................................................ 9

Data Filtering and Clock Recovery ..................................... 12

Analog Operation ........................................................ 55

Digital Operation ......................................................... 55

Data Indicator Output (DIO) ................................................ 13

Data Quality Indicator (DQI).......................................... 13, 56

Data Validity Blocks

Data Indicator Output.................................................. 13

Data Quality Indicator ................................................. 13

Receive Signal Strength Indicator............................... 13

Electrical Characteristics .................................................... 77

Errata .................................................................................... 3

Examples

Frequency Deviation and BBBW Calculation ............. 54

External Reference Input .................................................... 10

FIFO Interrupt ....................................................................... 9

Frequency Shift Keying

Data .............................................................................. 9

FIFO Select .................................................................. 9

Functional Description ........................................................ 43

General PCB Layout Deign ................................................ 72

Hardware Description ........................................................... 7

I/O Pin Input Specifications................................................. 78

Initialization......................................................................... 51

Internet Address ................................................................. 97

Interrupt .............................................................................. 10

Interrupt Request Output ...................................................... 9

Interrupts ............................................................................ 51

Clearing ...................................................................... 52

LBTD .......................................................................... 52

LCEXINT .................................................................... 52

POR............................................................................ 52

Setting ........................................................................ 52

TXOWRXOF............................................................... 52

TXRXFIFO.................................................................. 52

WUTINT...................................................................... 52

Low Duty Cycle Mode................................................... 14, 62

Low Noise Amplifier (LNA).................................................. 11

Low-Battery Voltage Detector............................................. 14

Memory Organization ......................................................... 16

Microchip Internet Web Site................................................ 97

Output

Filter Capacitor ............................................................. 9

Packaging

Details......................................................................... 88

Marking....................................................................... 87

Packaging Information........................................................ 87

Performance Characteristics

BER Curves

In 433 MHz Band................................................ 84

In 868 MHz Band................................................ 84

Channel Selectivity and Blocking ............................... 83

Receiver Sensitivity Over Ambient Temperature

At 433 MHz......................................................... 86

At 868 MHz......................................................... 86

MRF49XA Datasheet(PDF) 97 Page - Microchip Technology

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