Time Processor Unit 3
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
19-19
19.4.10 Channel Interrupt Status Register (CISR)
The channel interrupt status register (CISR) contains one interrupt status flag per channel. Time functions
specify via microcode when an interrupt flag is set. Setting a flag causes the TPU3 to make an interrupt
service request if the corresponding CIER bit is set. To clear a status flag, read CISR, then write a zero to
the appropriate bit.
NOTE
CISR is the only TPU3 register that can be accessed on a byte basis.
19.4.11 TPU3 Module Configuration Register 2 (TPUMCR2)
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
CH
15
CH
14
CH
13
CH
12
CH
11
CH
10
CH 9 CH 8 CH 7 CH 6 CH 5 CH 4 CH 3 CH 2 CH 1 CH 0
SRESET
0000_0000_0000_0000
Addr
0x30 4020 (TPU_A), 0x30 4420 (TPU_B)
Figure 19-20. CISR — Channel Interrupt Status Register
Table 19-17. CISR Bit Descriptions
Bits
Name
Description
0:15
CH[15:0] Channel
interrupt
status
0 Channel interrupt not asserted
1 Channel interrupt asserted
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
—
DIV2
SOFTRST
ETBANK
FPSCK
T2CF DTPU
SRESET
0000_0000_0000_0000
Addr
0x30 4028 (TPU_A), 0x30 4428 (TPU_B)
Figure 19-21. TPUMCR2 — TPU Module Configuration Register 2
Table 19-18. TPUMCR2 Bit Descriptions
Bits
Name
Description
0:6
—
Reserved
7
DIV2
Divide by 2 control. When asserted, the DIV2 bit, along with the TCR1P bit and the PSCK bit in
the TPUMCR, determines the rate of the TCR1 counter in the TPU3. If set, the TCR1 counter
increments at a rate of two system clocks. If negated, TCR1 increments at the rate determined
by control bits in the TCR1P and PSCK fields.
0 TCR1 increments at rate determined by control bits in the TCR1P and PSCK fields of the
TPUMCR register
1 Causes TCR1 counter to increment at a rate of the system clock divided by two
Summary of Contents for MPC561
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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...
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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...