CC2430 Datasheet, PDF (120/234 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

CC2430
13.6.8 Timer 3 and 4 registers
T3CNT (0xCA) – Timer 3 Counter
Bit Name
7:0 _CNT[7:0]
Reset R/W
0x00 R
Description
Timer count byte. Contains the current value of the 8-bit counter.
T3CTL (0xCB) – Timer 3 Control
Bit Name
7:5 _DIV[2:0]
4 _START
3 _OVFIM
2 _CLR
1:0 _MODE[1:0]
Reset
00
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
R0/W1
Overflow interrupt mask
0 : interrupt is disabled
1 : interrupt is enabled
Clear counter. Writing high resets counter to 0x00
R/W Timer 3 mode. Select the mode as follows:
00 Free running, repeatedly count from 0x00 to 0xFF
01 Down, count from T3CC0 to 0x00
10 Modulo, repeatedly count from 0x00 to T3CC0
11 Up/down, repeatedly count from 0x00 to T3CC0 and down
to 0x00
CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A
Page 120 of 232