CC2430-RTR1-F32 datasheet(143/234 Pages) TI

143 / 234 page

CC2430

CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A

Page 143 of 232

CLKCON (0xC6) – Clock Control

Bit

Name

Reset

R/W

Description

OSC32K

R/W

32 kHz clock oscillator select. The 16 MHz high speed RC

oscillator must be selected as system clock source when this bit is

to be changed.

0 – 32 kHz crystal oscillator

1 – 32 kHz RC oscillator

OSC

R/W

System clock oscillator select:

0 – 32 MHz crystal oscillator

1 – 16 MHz high speed RC oscillator

This setting will only take effect when the selected oscillator is

powered up and stable. If the selected oscillator is not powered up,

then writing this bit will power it up.

5:3

TICKSPD[2:0]

001

R/W

Timer ticks output setting, can not be higher than system clock

setting given by

OSC bit setting

000 – System clock

001 – System clock / 2

010 – System clock / 4

011 – System clock / 8

100 – System clock / 16

101 – System clock / 32

110 – System clock / 64

111 – System clock / 128

2:1

R/W

Reserved. Must always be set to 00.

CLKSPD

R/W

Clock Speed. Sets system clock frequency together with the

OSC

bit setting

0 – 32 MHz

1 – 16 MHz

This bit must always follow the value of the

OSC bit, which

selects which oscillator to use.

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