5 rtc control register (rtcctl) – Freescale Semiconductor ColdFire MCF52210 User Manual
Page 167
Memory Map/Register Definition
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor
11-7
11.2.1.5
RTC Control Register (RTCCTL)
The real-time clock control (RTCCTL) register is used to enable the real-time clock module and specify
the reference frequency information for the prescaler.
Figure 11-6. RTC Control Register (RTCCTL)
IPSBAR
Offset: 0x03D0 (RTCCTL)
Access: User read/write
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
EN
0
0
0
0
0
0
SWR
W
Reset
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
Table 11-6. RTCCTL Field Descriptions
Field
Description
31–8
Reserved, should be cleared.
7
EN
RTC Enables/Disable bit. This bit enables/disables the RTC. The software reset bit (SWR) has no effect on this bit.
Bit description
0 Disable the real-time clock
1 Enable the real-time clock
6–1
Reserved, should be cleared.
0
SWR
Software Reset bit. This bit resets the RTC to its default state. However, a software reset has no effect on the EN bit.
0 No effect
1 Reset the module to its default state