CC2550-RTY1 datasheet(43/55 Pages) TI

43 / 55 page

CC2550

PRELIMINARY Data Sheet (Rev.1.2)

SWRS039A

Page 43 of 54

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.

When FSK modulation is enabled:

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

implicit 1. The resulting FSK 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 on 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 on

CC2550

(Go to RX)

CC2550-RTY1 Datasheet(PDF) 43 Page - Texas Instruments

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