Time Processor Unit 3
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
19-11
19.4.1
TPU Module Configuration Register (TPUMCR)
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field STOP
TCR1P
TCR2P
EMU T2CG STF SUPV PSCK TPU3 T2CSL
—
SRESET
0
00
00
0
0
0
1
0
1
0
0000
Addr
0x30 4000(TPU_A), 0x30 4400 (TPU_B)
Figure 19-5. TPUMCR — TPU Module Configuration Register
Table 19-7. TPUMCR Bit Description
Bits
Name
Description
0
STOP
Low-power stop mode enable. If the STOP bit in TPUMCR is set, the TPU3 shuts down its
internal clocks, shutting down the internal microengine. TCR1 and TCR2 cease to increment and
retain the last value before the stop condition was entered. The TPU3 asserts the stop flag (STF)
in TPUMCR to indicate that it has stopped.
0 Enable TPU3 clocks
1 Disable TPU3 clocks
1:2
TCR1P
Timer Count Register 1 prescaler control. TCR1 is clocked from the output of a prescaler. The
prescaler divides its input by 1, 2, 4, or 8. This is a write-once field unless the PWOD bit in
TPUMCR3 is set.
00 Divide by 1
01 Divide by 2
10 Divide by 4
11 Divide by 8
Refer to
Section 19.3.8, “Prescaler Control for TCR1
” for more information.
3:4
TCR2P
Timer Count Register 2 prescaler control. TCR2 is clocked from the output of a prescaler. The
prescaler divides this input by 1, 2, 4, or 8. This is a write-once field unless the PWOD bit in
TPUMCR3 is set.
00 Divide by 1
01 Divide by 2
10 Divide by 4
11 Divide by 8
Refer to
Section 19.3.9, “Prescaler Control for TCR2
” for more information.
5
EMU
Emulation control. In emulation mode, the TPU3 executes microinstructions from DPTRAM
exclusively. Access to the DPTRAM via the IMB3 is blocked, and the DPTRAM is dedicated for
use by the TPU3. After reset, this bit can be written only once.
0 TPU3 and DPTRAM operate normally
1 TPU3 and DPTRAM operate in emulation mode
1
6
T2CG
TCR2 clock/gate control
0 TCR2 pin used as clock source for TCR2
1 TCR2 pin used as gate of DIV8 clock for TCR2
Refer to
Section 19.3.9, “Prescaler Control for TCR2
” for more information.
7
STF
Stop flag.
0 TPU3 is operating normally
1 TPU3 is stopped (STOP bit has been set)
8
SUPV
Supervisor data space
0 Assignable registers are accessible from user or supervisor privilege level
1 Assignable registers are accessible from supervisor privilege level only
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...