CC2430 Datasheet, PDF (122/212 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

Peripherals : 8-bit timers, Timer 3 and Timer 4
CC2430
T4CTL (0xEB) – Timer 4 Control
Bit Name
7:5 _DIV[2:0]
4 _START
3 _OVFIM
2 _CLR
1:0 _MODE[1:0]
Reset
000
0
1
0
00
R/W Description
R/W Prescaler divider value. Generates the active clock edge used to
clock the timer from CLKCON.TICKSPD as follows:
000 Tick frequency /1
001 Tick frequency /2
010 Tick frequency /4
011 Tick frequency /8
100 Tick frequency /16
101 Tick frequency /32
110 Tick frequency /64
111 Tick frequency /128
R/W Start timer. Normal operation when set, suspended when cleared
R/W0 Overflow interrupt mask
R0/W1 Clear counter. Writing high resets counter to 0x00
R/W Timer 4 mode. Select the mode as follows:
00 Free running, repeatedly count from 0x00 to 0xFF
01 Down, count from T4CC0 to 0x00
10 Modulo, repeatedly count from 0x00 to T4CC0
11 Up/down, repeatedly count from 0x00 to T4CC0 and down
to 0x00
CC2430 Data Sheet (rev. 2.1) SWRS036F
Page 122 of 211