CC2510F16 Datasheet, PDF (79/244 Pages) Texas Instruments – Low-Power SoC (System-on-Chip) with MCU, Memory, 2.4 GHz RF Transceiver, and USB Controller

CC2510Fx / CC2511Fx
CLKCON (0xC6) - Clock Control
Bit Field Name
Reset R/W Description
7
OSC32K
1
R/W 32 kHz clock oscillator select. The HS RCOSC must be clock source for the
system clock (CLKCON.OSC=1) when this bit is to be changed.
0
32.768 kHz crystal oscillator
1
Low power RC oscillator (32 - 36 kHz for CC2510Fx and 32 kHz for
CC2511Fx)
Note: This bit is not retained in PM2 and PM3. After re-entry to active mode from
one of these power modes this bit will be at the reset value 1.
6
OSC
1
R/W System clock oscillator select.
0
High speed crystal oscillator
1
HS RC oscillator
If the selected oscillator is not already powered up when this bit is set/cleared, it
will be powered up by selecting it.
This setting will only take effect when the selected oscillator is powered up and
stable and when the calibration of the HS RCOSC and initial calibration of the
low power RC oscillator is completed.
Note: It is not possible to change from high speed RC oscillator to high speed
crystal oscillator when SLEEP.MODE≠00
5:3 TICKSPD[2:0] 001
R/W Timer tick speed setting. The value of TICKSPD cannot be higher than CLKSPD.
CLKCON.OSC=0
HS XOSC used as clock source
for system clock
CLKCON.OSC=1
Calibrated HS RCOSC used as
clock source for system clock
000 f_Ref
001 f_Ref /2
010 f_Ref /4
011 f_Ref /8
100 f_Ref /16
101 f_Ref /32
110 f_Ref /64
111 f_Ref /128
26 MHz
13 MHz
6.5 MHz
3.25 MHz
1.625 MHz
812.5 kHz
406.25 kHz
203.125 kHz
NA
f_Ref /2
f_Ref /4
f_Ref /8
f_Ref /16
f_Ref /32
f_Ref /64
f_Ref /128
NA
13 MHz
6.5 MHz
3.25 MHz
1.625 MHz
812.5 kHz
406.25 kHz
203.125 kHz
2:0 CLKSPD[2:0] 001
R/W
f_Ref = f_xosc for CC2510Fx and f_Ref = f_xosc/2 for CC2511Fx
Numbers above are for CC2510Fx with f_xosc = 26 MHz
System clock speed setting. When a new CLKSPD value is written, the new
setting is read when the clock has changed.
CLKCON.OSC=0
HS XOSC used as clock source
for system clock
CLKCON.OSC=1
Calibrated HS RCOSC used as
clock source for system clock
000 f_Ref
26 MHz
NA
001 f_Ref /2
13 MHz
f_Ref /2
010 f_Ref /4
6.5 MHz
f_Ref /4
011 f_Ref /8
3.25 MHz
f_Ref /8
100 f_Ref /16
1.625 MHz
f_Ref /16
101 f_Ref /32
812.5 kHz
f_Ref /32
110 f_Ref /64
406.25 kHz
f_Ref /64
111 f_Ref /128 203.125 kHz
f_Ref /128
f_Ref = f_xosc for CC2510Fx and f_Ref = f_xosc/2 for CC2511Fx
Numbers above are for CC2510Fx with f_xosc = 26 MHz
NA
13 MHz
6.5 MHz
3.25 MHz
1.625 MHz
812.5 kHz
406.25 kHz
203.125 kHz
SWRS055F
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