Motorola MPC8260 User Manual
4-41
MPC8260 PowerQUICC II UserÕs Manual
MOTOROLA
Part II. ConÞguration and Reset
4.3.2.15 Time Counter Register (TMCNT)
The time counter register (TMCNT), shown in Figure 4-36, contains the current value of
the time counter.
the time counter.
4.3.2.16 Time Counter Alarm Register (TMCNTAL)
The time counter alarm register (TMCNTAL), shown in Figure 4-37, holds a value
(ALARM). When the value of TMCNT equals ALARM, a maskable interrupt is generated.
(ALARM). When the value of TMCNT equals ALARM, a maskable interrupt is generated.
14
TCF
Time counter frequency. The input clock to the time counter may be either 4 MHz or 32 KHz. The
user should set the TCF bit according to the frequency of this clock.
0 The input clock to the time counter is 4 MHz.
1 The input clock to the time counter is 32 KHz.
See Section 4.1.2, ÒTimers ClockÓ for further details.
user should set the TCF bit according to the frequency of this clock.
0 The input clock to the time counter is 4 MHz.
1 The input clock to the time counter is 32 KHz.
See Section 4.1.2, ÒTimers ClockÓ for further details.
15
TCE
Time counter enable. Is not affected by soft or hard reset.
0 The time counter is disabled.
1 The time counter is enabled.
0 The time counter is disabled.
1 The time counter is enabled.
Bits
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
TMCNT
Reset
Ñ
R/W
R/W
Addr
Bits
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Field
TMCNT
Reset
Ñ
R/W
R/W
Addr
0x10226
Figure 4-36. Time Counter Register (TCMCNT)
Table 4-19. TMCNTSC Field Descriptions (Continued)
Bits
Name
Description