CC1150-RTY1 datasheet(19/67 Pages) TI1

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DATA

XOSC

DATA

DRATE _ E

XOSC

DRATE _ E

log

DRATE _ M

256

CC1150

www.ti.com

SWRS037B – JANUARY 2006 – REVISED MARCH 2015

The following approach shown in Equation 2 can be used to find suitable values for a given data rate.

(2)

If DRATE_M is rounded to the nearest integer and becomes 256, increment DRATE_E and use

DRATE_M=0.

The data rate can be set from 0.8 kBaud to 500 kBaud with the minimum data rate step size changes

according to Table 5-4.

Table 5-4. Data Rate Step Size

MIN DATA RATE

TYPICAL DATA RATE

MAX DATA RATE

DATA RATE STEP SIZE

[kBaud]

0.8

1.2 / 2.4

3.17

0.0062

3.17

4.8

6.35

0.0124

6.35

9.6

12.7

0.0248

12.7

19.6

25.4

0.0496

25.4

38.4

50.8

0.0992

50.8

76.8

101.6

0.1984

101.6

153.6

203.1

0.3967

203.1

250

406.3

0.7935

406.3

500

1.5869

5.8

Packet Handling Hardware Support

The CC1150 has built-in hardware support for packet oriented radio protocols.

In transmit mode, the packet handler can be configured to add the following elements to the packet stored

in the TX FIFO:

•

A programmable number of preamble bytes.

•

A two byte Synchronization Word. Can be duplicated to give a 4-byte sync word (recommended). It is

not possible to only insert preamble or only insert a sync word.

•

Optionally whitening the data with a PN9 sequence.

•

Optionally Interleave and Forward Error Code the data.

•

Optionally compute and add a 2-byte CRC checksum over the data field.

In a system where CC1150 is used as the transmitter and CC1101 as the receiver the recommended

setting is 4-byte preamble and 4-byte sync word except for 500 kBaud data rate where the recommended

preamble length is 8 bytes.

NOTE

is in the IDLE state.

5.8.1

Data Whitening

From a radio perspective, the ideal over the air data are random and DC free. This results in the

smoothest power distribution over the occupied bandwidth. This also gives the regulation loops in the

receiver uniform operation conditions (no data dependencies).

Detailed Description

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