DMTimer 1ms
20.2.5.4 TISR Register (offset = 18h) [reset = 0h]
TISR is shown in
and described in
.
The Timer Status Register is used to determine which of the timer events requested an interrupt.
Figure 20-38. TISR Register
31
30
29
28
27
26
25
24
Reserved
R-0h
23
22
21
20
19
18
17
16
Reserved
R-0h
15
14
13
12
11
10
9
8
Reserved
R-0h
7
6
5
4
3
2
1
0
Reserved
TCAR_IT_FLAG
OVF_IT_FLAG
MAT_IT_FLAG
R-0h
R/W1toCl-0h
R/W1toCl-0h
R/W1toCl-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 20-39. TISR Register Field Descriptions
Bit
Field
Type
Reset
Description
31-3
Reserved
R
0h
Reads return 0
2
TCAR_IT_FLAG
R/W1toCl
0h
indicates when an external pulse transition of the correct polarity is
detected on the external pin PIEVENTCAPT
0 = TCAR_IT_FLAG_0 : no capture interrupt request
1 = TACR_IT_FLAG_1 : capture interrupt request
1
OVF_IT_FLAG
R/W1toCl
0h
TCRR overflow
0 = OVF_IT_FLAG_0 : no overflow interrupt request
1 = OVF_IT_FLAG_1 : overflow interrupt pending
0
MAT_IT_FLAG
R/W1toCl
0h
the compare result of TCRR and TMAR
0 = MAT_IT_FLAG_0 : no compare interrupt request
1 = MAT_IT_FLAG_1 : compare interrupt pending
3602
Timers
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated