Chapter 14 Enhanced Capture Timer (ECT16B8CV3)
MC9S12XE-Family Reference Manual , Rev. 1.19
556
Freescale Semiconductor
14.3.2.27 Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
Read: Anytime
Write: Anytime
All bits reset to zero.
Module Base + 0x002F
7
6
5
4
3
2
1
0
R
PTMPS7
PTMPS6
PTMPS5
PTMPS4
PTMPS3
PTMPS2
PTMPS1
PTMPS0
W
Reset
0
0
0
0
0
0
0
0
Figure 14-49. Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
Table 14-34. PTMCPSR Field Descriptions
Field
Description
7:0
PTMPS[7:0]
Precision Timer Modulus Counter Prescaler Select Bits
— These eight bits specify the division rate of the
modulus counter prescaler. These are effective only when the PRNT bit of TSCR1 is set to 1.
shows
some possible division rates.
The newly selected prescaler division rate will not be effective until a load of the load register into the modulus
counter count register occurs.
Table 14-35. Precision Timer Modulus Counter Prescaler Select Examples when PRNT = 1
PTMPS7
PTMPS6
PTMPS5
PTMPS4
PTMPS3
PTMPS2
PTMPS1
PTMPS0
Prescaler
Division
Rate
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
2
0
0
0
0
0
0
1
0
3
0
0
0
0
0
0
1
1
4
0
0
0
0
0
1
0
0
5
0
0
0
0
0
1
0
1
6
0
0
0
0
0
1
1
0
7
0
0
0
0
0
1
1
1
8
0
0
0
0
1
1
1
1
16
0
0
0
1
1
1
1
1
32
0
0
1
1
1
1
1
1
64
0
1
1
1
1
1
1
1
128
1
1
1
1
1
1
1
1
256
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International
Trade
Commission,
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