Time Processor Unit 3
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
19-21
19.4.12 TPU Module Configuration Register 3 (TPUMCR3)
101
128
6.4
µ
s
3.88
µ
s
3.20
µ
s
2.29
µ
s
110
256
12.8
µ
s
7.76
µ
s
6.40
µ
s
4.57
µ
s
111
512
25.6
µ
s
15.51
µ
s
12.80
µ
s
9.14
µ
s
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
—
PWOD
TCR2PSCK2 EPSCKE
—
EPSCK
SRESET
0000_0000_0000_0000
Addr
0x30 402A (TPU_A), 0x30 442A (TPU_B)
Figure 19-22. TPUMCR3 — TPU Module Configuration Register 3
Table 19-21. TPUMCR3 Bit Descriptions
Bits
Name
Description
0:6
—
Reserved
7
PWOD
Prescaler write-once disable bit. The PWOD bit does not lock the EPSCK field and the EPSCKE
bit.
0 Prescaler fields in MCR are write-once
1 Prescaler fields in MCR can be written anytime
8
TCR2PSCK
2
TCR2 prescaler 2
0 Prescaler clock source is divided by one.
1 Prescaler clock is divided. See divider definitions in
.
9
EPSCKE
Enhanced pre-scaler enable
0 Disable enhanced prescaler (use standard prescaler)
1 Enable enhanced prescaler. System clock will be divided by the value in EPSCK field.
10
—
Reserved
11:15
EPSCK
Enhanced prescaler value that will be loaded into the enhanced prescaler counter. Prescaler
value(EPSCK + 1) x 2. Refer to
Section 19.3.8, “Prescaler Control for TCR1
,” for details.
Table 19-20. System Clock Frequency/Minimum Guaranteed Detected Pulse
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...