CC1100-RTY1 datasheet(81/100 Pages) TI1

81 / 100 page

CC1100

SWRS038D

Page 81 of 92

0x1F: WOREVT0 –Low Byte Event0 Timeout

Bit

Field Name

Reset

R/W

Description

7:0

EVENT0[7:0]

107 (0x6B)

R/W

Low byte of EVENT0 timeout register.

The default EVENT0 value gives 1.0s timeout, assuming a 26.0 MHz

crystal.

0x20: WORCTRL – Wake On Radio Control

Bit

Field Name

Reset

R/W

Description

RC_PD

R/W

Power down signal to RC oscillator. When written to 0, automatic initial

calibration will be performed

6:4

EVENT1[2:0]

7 (111)

R/W

Timeout setting from register block. Decoded to Event 1 timeout. RC

oscillator clock frequency equals FXOSC/750, which is 34.7 – 36 kHz,

depending on crystal frequency. The table below lists the number of clock

periods after Event 0 before Event 1 times out.

Setting

tEvent1

0 (000)

4 (0.111 – 0.115 ms)

1 (001)

6 (0.167 – 0.173 ms)

2 (010)

8 (0.222 – 0.230 ms)

3 (011)

12 (0.333 – 0.346 ms)

4 (100)

16 (0.444 – 0.462 ms)

5 (101)

24 (0.667 – 0.692 ms)

6 (110)

32 (0.889 – 0.923 ms)

7 (111)

48 (1.333 – 1.385 ms)

RC_CAL

R/W

Enables (1) or disables (0) the RC oscillator calibration.

Reserved

1:0

WOR_RES

0 (00)

R/W

Controls the Event 0 resolution as well as maximum timeout of the WOR

module and maximum timeout under normal RX operation::

Setting

Resolution (1 LSB)

Max timeout

0 (00)

1 period (28µs – 29µs)

1.8 – 1.9 seconds

1 (01)

5 periods (0.89ms –0.92 ms)

58 – 61 seconds

2 (10)

10 periods (28 – 30 ms)

31 – 32 minutes

3 (11)

15 periods (0.91 – 0.94 s)

16.5 – 17.2 hours

Note that WOR_RES should be 0 or 1 when using WOR because

WOR_RES

> 1 will give a very low duty cycle.

In normal RX operation all settings of WOR_RES can be used.

CC1100-RTY1 Datasheet(PDF) 81 Page - Texas Instruments

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