CC1021-RTR1 datasheet(3/92 Pages) TI

3 / 92 page

CC1021

SWRS045

Page 3 of 91

13.

Transmitter...................................................................................................................44

13.1.

FSK Modulation Formats ................................................................................44

13.2.

Output Power Programming ...........................................................................44

13.3.

TX Data Latency .............................................................................................45

13.4.

Reducing Spurious Emission and Modulation Bandwidth ..............................46

14.

Input / Output Matching and Filtering .......................................................................46

15.

Frequency Synthesizer ...............................................................................................50

15.1.

VCO, Charge Pump and PLL Loop Filter .......................................................50

15.2.

VCO and PLL Self-Calibration ........................................................................51

15.3.

PLL Turn-on Time versus Loop Filter Bandwidth ...........................................52

15.4.

PLL Lock Time versus Loop Filter Bandwidth ................................................53

16.

VCO and LNA Current Control...................................................................................53

17.

Power Management.....................................................................................................54

18.

On-Off Keying (OOK)...................................................................................................56

19.

Crystal Oscillator.........................................................................................................58

20.

Built-in Test Pattern Generator ..................................................................................59

21.

Interrupt on Pin DCLK.................................................................................................60

21.1.

Interrupt upon PLL Lock..................................................................................60

21.2.

Interrupt upon Received Signal Carrier Sense ...............................................60

22.

PA_EN and LNA_EN Digital Output Pins ..................................................................60

22.1.

Interfacing an External LNA or PA..................................................................60

22.2.

General Purpose Output Control Pins ............................................................61

22.3.

PA_EN and LNA_EN Pin Drive.......................................................................61

23.

System Considerations and Guidelines ...................................................................61

24.

PCB Layout Recommendations.................................................................................63

25.

Antenna Considerations.............................................................................................64

26.

Configuration Registers .............................................................................................64

26.1.

CC1021 Register Overview ............................................................................65

27.

Package Description (QFN 32) ...................................................................................85

27.1.

Package Marking ............................................................................................86

27.2.

Recommended PCB Footprint for Package (QFN 32) ...................................87

27.3.

Package Thermal Properties ..........................................................................87

27.4.

Soldering Information......................................................................................87

27.5.

Plastic Tube Specification...............................................................................88

27.6.

Carrier Tape and Reel Specification...............................................................88

28.

Ordering Information...................................................................................................88

29.

General Information ....................................................................................................89

30.

Address Information ...................................................................................................91

CC1021-RTR1 Datasheet(PDF) 3 Page - Texas Instruments

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