1198 datasheet(39/50 Pages) TI

39 / 50 page

CC1150

Preliminary Data Sheet (rev. 1.0.)

SWRS037

Page 39 of 49

0x13: MDMCFG1 ñ Modulator configuration

Bit

Field Name

Reset

R/W

Description

FEC_EN

R/W

Enable Forward Error Correction (FEC) with interleaving for

packet payload

6:4

NUM_PREAMBLE[2:0]

2 (010)

R/W

Sets the minimum number of preamble bytes to be

transmitted

Setting

Number of preamble bytes

0 (000)

1 (001)

2 (010)

3 (011)

4 (100)

5 (101)

6 (110)

7 (111)

3:2

Reserved

1:0

CHANSPC_E[1:0]

2 (10)

R/W

2 bit exponent of channel spacing

0x14: MDMCFG0 ñ Modulator configuration

Bit

Field Name

Reset

R/W

Description

7:0

CHANSPC_M[7:0]

248 (0xF8)

R/W

8-bit mantissa of channel spacing (initial 1 assumed). The

channel spacing is multiplied by the channel number CHAN and

added to the base frequency. It is unsigned and has the format:

()

CHAN

CHANSPC

XOSC

CHANNEL

⋅

∆

256

The default values give 199.951kHz channel spacing (the

closest setting to 200kHz), assuming 26.0MHz crystal

frequency.

0x15: DEVIATN ñ Modulator deviation setting

Bit

Field Name

Reset

R/W

Description

Reserved

6:4

DEVIATION_E[2:0]

4 (100)

R/W

Deviation exponent

Reserved

2:0

DEVIATION_M[2:0]

7 (111)

R/W

When MSK modulation is enabled:

Sets fraction of symbol period used for phase change.

When 2-FSK/GFSK modulation is enabled:

Deviation mantissa, interpreted as a 4-bit value with MSB

implicit 1. The resulting frequency deviation is given by:

DEVIATION

xosc

dev

DEVIATION

)

(

⋅

The default values give ±47.607kHz deviation, assuming

26.0MHz crystal frequency.

1198 Datasheet(PDF) 39 Page - Texas Instruments

1198 Datasheet(HTML) 39 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Datasheet Download

Link URL