S9S12XS256J0CAL Datasheet, PDF (359/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

12.3.0.9 PIT Count Register 0 to 3 (PITCNT0–3)
Periodic Interrupt Timer (S12PIT24B4CV1)
Module Base + 0x000A, 0x000B
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT}
W ¹⁵
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset 0
0
0
0
0
0
0000000000
Figure 12-15. PIT Count Register 0 (PITCNT0)
Module Base + 0x000E, 0x000F
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT}
W ¹⁵
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset 0
0
0
0
0
0
0000000000
Figure 12-16. PIT Count Register 1 (PITCNT1)
Module Base + 0x0012, 0x0013
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT}
W ¹⁵
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset 0
0
0
0
0
0
0000000000
Figure 12-17. PIT Count Register 2 (PITCNT2)
Module Base + 0x0016, 0x0017
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT PCNT}
W ¹⁵
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset 0
0
0
0
0
0
0000000000
Figure 12-18. PIT Count Register 3 (PITCNT3)
Read: Anytime
Write: Has no meaning or effect
Table 12-10. PITCNT0–3 Field Descriptions
Field
Description
15:0 PIT Count Bits 15-0 — These bits represent the current 16-bit modulus down-counter value. The read access
PCNT[15:0] for the count register must take place in one clock cycle as a 16-bit access.
S12XS Family Reference Manual, Rev. 1.13
Freescale Semiconductor
359