Datasheet

S12XE Clocks and Reset Generator (S12XECRGV1)
S12XS Family Reference Manual, Rev. 1.13
250 Freescale Semiconductor
8.3.2.9 S12XECRG COP Control Register (COPCTL)
This register controls the COP (Computer Operating Properly) watchdog.
Read: Anytime
Write:
1. RSBCK: anytime in special modes; write to “1” but not to “0” in all other modes
2. WCOP, CR2, CR1, CR0:
— Anytime in special modes
— Write once in all other modes
– Writing CR[2:0] to “000” has no effect, but counts for the “write once” condition.
– Writing WCOP to “0” has no effect, but counts for the “write once” condition.
0110 (÷7)
7x10
3
14x10
3
35x10
3
70x10
3
140x10
3
350x10
3
700x10
3
1.4x10
6
0111 (÷8)
8x10
3
16x10
3
40x10
3
80x10
3
160x10
3
400x10
3
800x10
3
1.6x10
6
1000 (÷9)
9x10
3
18x10
3
45x10
3
90x10
3
180x10
3
450x10
3
900x10
3
1.8x10
6
1001 (÷10)
10 x10
3
20x10
3
50x10
3
100x10
3
200x10
3
500x10
3
1x10
6
2x10
6
1010 (÷11)
11 x10
3
22x10
3
55x10
3
110x10
3
220x10
3
550x10
3
1.1x10
6
2.2x10
6
1011 (÷12)
12x10
3
24x10
3
60x10
3
120x10
3
240x10
3
600x10
3
1.2x10
6
2.4x10
6
1100 (÷13)
13x10
3
26x10
3
65x10
3
130x10
3
260x10
3
650x10
3
1.3x10
6
2.6x10
6
1101 (÷14)
14x10
3
28x10
3
70x10
3
140x10
3
280x10
3
700x10
3
1.4x10
6
2.8x10
6
1110 (÷15)
15x10
3
30x10
3
75x10
3
150x10
3
300x10
3
750x10
3
1.5x10
6
3x10
6
1111 (÷16)
16x10
3
32x10
3
80x10
3
160x10
3
320x10
3
800x10
3
1.6x10
6
3.2x10
6
Module Base + 0x0008
76543210
R
WCOP RSBCK
000
CR2 CR1 CR0
W WRTMASK
Reset
1
00000000
1. Refer to Device User Guide (Section: S12XECRG) for reset values of WCOP, CR2, CR1 and CR0.
= Unimplemented or Reserved
Figure 8-11. S12XECRG COP Control Register (COPCTL)
Table 8-11. RTI Frequency Divide Rates for RTDEC=1
RTR[3:0]
RTR[6:4] =
000
(1x10
3
)
001
(2x10
3
)
010
(5x10
3
)
011
(10x10
3
)
100
(20x10
3
)
101
(50x10
3
)
110
(100x10
3
)
111
(200x10
3
)