CC1150-RTY1 datasheet(46/67 Pages) TI1

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DEVIATION _ E

xosc

dev

(8 DEVIATION _ M) 2

CHANSPC _ E

xosc

channel

(256 CHANSPC _ M) 2

CHAN

CC1150

SWRS037B – JANUARY 2006 – REVISED MARCH 2015

www.ti.com

Table 5-30. 0x14: MDMCFG0 – Modulator Configuration

BIT

FIELD

TYPE

RESET

DESCRIPTION

7:0

CHANSPC_M[7:0]

R/W

0xF8

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:

(8)

The default values give 199.951 kHz channel spacing

(the closest setting to 200 kHz), assuming 26.0 MHz

crystal frequency.

Table 5-31. 0x15: DEVIATN – Modulator Deviation Setting

BIT

FIELD

TYPE

RESET

DESCRIPTION

Not Used.

6:4

DEVIATION_E[2:0]

R/W

0x4

Deviation exponent.

Not Used.

2:0

DEVIATION_M[2:0]

R/W

0x7

When MSK modulation is enabled:

Specifies the fraction of symbol period (1/8-8/8) during

which a phase change occurs (‘0’: +90deg, ‘1’: –90deg).

Refer to the SmartRF Studio [11] software for correct

DEVIATN setting when using MSK.

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

Equation 9:

(9)

The default values give ±47.607 kHz deviation, assuming

26.0 MHz crystal frequency.

When ASK/OOK modulation is enabled:

This setting has no effect.

Table 5-32. 0x17: MCSM1 – Main Radio Control State Machine Configuration

BIT

FIELD

TYPE

RESET

DESCRIPTION

7:6

Not Used.

5:2

Reserved

0x0C

Defined on the transceiver version (CC1101).

1:0

TXOFF_MODE[1:0]

R/W

0x0

Select what should happen when a packet has been

sent (TX):

The binary number is the setting and the result is the

next state after finishing packet transmission.

00 = IDLE

01 = FSTXON

10 = Stay in TX (start sending preamble)

11 = Do not use, not implemented on CC1150

Detailed Description

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