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Chapter 11 S12XE Clocks and Reset Generator (S12XECRGV1) Block Description
MC9S12XE-Family Reference Manual Rev. 1.07
Freescale Semiconductor
489
0111 (
÷
8)
OFF
8x2
10
8x2
11
8x2
12
8x2
13
8x2
14
8x2
15
8x2
16
1000 (
÷
9)
OFF
9x2
10
9x2
11
9x2
12
9x2
13
9x2
14
9x2
15
9x2
16
1001 (
÷
10)
OFF
10x2
10
10x2
11
10x2
12
10x2
13
10x2
14
10x2
15
10x2
16
1010 (
÷
11)
OFF
11x2
10
11x2
11
11x2
12
11x2
13
11x2
14
11x2
15
11x2
16
1011 (
÷
12)
OFF
12x2
10
12x2
11
12x2
12
12x2
13
12x2
14
12x2
15
12x2
16
1100 (
÷
13)
OFF
13x2
10
13x2
11
13x2
12
13x2
13
13x2
14
13x2
15
13x2
16
1101 (
÷
14)
OFF
14x2
10
14x2
11
14x2
12
14x2
13
14x2
14
14x2
15
14x2
16
1110 (
÷
15)
OFF
15x2
10
15x2
11
15x2
12
15x2
13
15x2
14
15x2
15
15x2
16
1111 (
÷
16)
OFF
16x2
10
16x2
11
16x2
12
16x2
13
16x2
14
16x2
15
16x2
16
1
Denotes the default value out of reset.This value should be used to disable the RTI to ensure future backwards compatibility.
Table 11-10. 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
)
0000 (
÷
1)
1x10
3
2x10
3
5x10
3
10x10
3
20x10
3
50x10
3
100x10
3
200x10
3
0001 (
÷
2)
2x10
3
4x10
3
10x10
3
20x10
3
40x10
3
100x10
3
200x10
3
400x10
3
0010 (
÷
3)
3x10
3
6x10
3
15x10
3
30x10
3
60x10
3
150x10
3
300x10
3
600x10
3
0011 (
÷
4)
4x10
3
8x10
3
20x10
3
40x10
3
80x10
3
200x10
3
400x10
3
800x10
3
0100 (
÷
5)
5x10
3
10x10
3
25x10
3
50x10
3
100x10
3
250x10
3
500x10
3
1x10
6
0101 (
÷
6)
6x10
3
12x10
3
30x10
3
60x10
3
120x10
3
300x10
3
600x10
3
1.2x10
6
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
Table 11-9. RTI Frequency Divide Rates for RTDEC = 0
RTR[3:0]
RTR[6:4] =
000
(OFF)
001
(2
10
)
010
(2
11
)
011
(2
12
)
100
(2
13
)
101
(2
14
)
110
(2
15
)
111
(2
16
)