CC2550-RTY1 datasheet(46/62 Pages) TI2

46 / 62 page

CC2550

SWRS039B

Page 46 of 58

0x15: DEVIATN – 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. Refer

to the SmartRF® Studio software [4] 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 deviation is given by:

DEVIATION

xosc

dev

DEVIATION

)

(

⋅

The default values give ±47.607 kHz deviation, assuming

26.0 MHz crystal frequency.

0x17: MCSM1 – Main Radio Control State Machine Configuration

Bit

Field Name

Reset

R/W

Description

7:6

Reserved

5:2

Reserved

Defined in the transceiver version

1:0

TXOFF_MODE[1:0]

0 (00)

R/W

Select what should happen when a packet has been sent

(TX)

Setting

Next state after finishing packet transmission

0 (00)

IDLE

1 (01)

FSTXON

2 (10)

Stay in TX (start sending preamble)

3 (11)

Do not use, not implemented in

CC2550

(Go to RX)

CC2550-RTY1 数据表(PDF) 46 Page - Texas Instruments

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