Texas Instruments CC2541EMK User Manual

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Table 22-1. Internal Registers
Register Name Reset R/W Function
t2tim[15:0] 0x0000 R/W Holds the 16-bit upcounter
t2_cap[15:0] 0x0000 R Holds the last captured value of the upcounter
t2_per[15:0] 0x0000 R/W Holds the period of the upcounter
t2_cmp1[15:0] 0x0000 R/W Holds compare value 1 for the upcounter
t2_cmp2[15:0] 0x0000 R/W Holds compare value 2 for the upcounter
t2ovf[23:0] 0x00 0000 R/W Holds the 24-bit overflow counter
t2ovf_cap[23:0] 0x00 0000 R Holds the last captured value of the overflow counter
t2ovf_per[23:0] 0x00 0000 R/W Holds the period of the overflow counter
t2ovf_cmp1[23:0] 0x00 0000 R/W Holds compare value 1 for the overflow counter
t2ovf_cmp2[23:0] 0x00 0000 R/W Holds compare value 2 for the overflow counter
The registers listed in the remainder of this section are directly accessible in the SFR address space.
T2MSEL (0xC3) – Timer 2 Multiplex Select
Bit Name Reset R/W Function
No.
7:0 – 0 R0 Reserved. Read as 0
6:4
T2MOVFSEL
0 R/W The value of this register selects the internal registers that are modified or read
when accessing T2MOVF0, T2MOVF1, and T2MOVF2.
000: t2ovf (overflow counter)
001: t2ovf_cap (overflow capture)
010: t2ovf_per (overflow period)
011: t2ovf_cmp1 (overflow compare 1)
100: t2ovf_cmp2 (overflow compare 2)
101 to 111: Reserved
3 – 0 R0 Reserved. Read as 0
2:0
T2MSEL
0 R/W The value of this register selects the internal registers that are modified or read
when accessing T2M0 and T2M1.
000: t2tim (timer count value)
001: t2_cap (timer capture)
010: t2_per (timer period)
011: t2_cmp1 (timer compare 1)
100: t2_cmp2 (timer compare 2)
101 to 111: Reserved
T2M0 (0xA2) – Timer 2 Multiplexed Register 0
Bit Name Reset R/W Function
No.
7:0
T2M0
0 R/W Indirectly returns/modifies bits [7:0] of an internal register depending on the
T2MSEL.T2MSEL value.
When reading the T2M0 register with T2MSEL.T2MSEL set to 000 and
T2CTRL.LATCH_MODE set to 0, the timer (t2tim) value is latched.
When reading the T2M0 register with T2MSEL.T2MSEL set to 000 and
T2CTRL.LATCH_MODE set to 1, the timer (t2tim) and overflow counter (t2ovf)
values are latched.
213
SWRU191C–April 2009–Revised January 2012 Timer 2 (MAC Timer)
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Texas Instruments CC2541EMK Specifications

General

Brand	Texas Instruments
Model	CC2541EMK
Category	Microcontrollers
Language	English