Time Processor Unit 3
MPC561/MPC563 Reference Manual, Rev. 1.2
19-8
Freescale Semiconductor
Figure 19-4. TCR2 Prescaler Control
is a summary of prescaler output (assuming a divide-by-one value for the pre-divider
prescaler).
19.4
Programming Model
The TPU3 memory map contains three groups of registers:
•
System configuration registers
•
Channel control and status registers
•
Development support and test verification registers
All registers except the channel interrupt status register (CISR) must be read or written by means of
half-word (16-bit) or word (32-bit) accesses. The address space of the TPU3 memory map occupies 512
bytes. Unused registers within the 512-byte address space return zeros when read.
shows the TPU3 address map.
Table 19-5. TCR2 Prescaler Control
TCR2 Value
Internal Clock Divide Ratio
External Clock Divide Ratio
TCR2PSCK2 = 0
TCR2PSCK2 = 1
TCR2PSCK2 = 0
TCR2PSCK2 = 1
0b00
8
8
1
1
0b01
16
24
2
3
0b10
32
56
4
7
0b11
64
120
8
15
Table 19-6. TPU3 Register Map
Address
Register
0x30 4000(TPU_A)
0x30 4400(TPU_B)
TPU3 Module Configuration Register (TPUMCR)
See
for bit descriptions.
0x30 4002(TPU_A)
0x30 4402(TPU_B)
TPU3 Test Configuration Register (TCR)
0x30 4004(TPU_A)
0x30 4404(TPU_B)
Development Support Control Register (DSCR)
See
for bit descriptions.
0x30 4006(TPU_A)
0x30 4406(TPU_B)
Development Support Status Register (DSSR)
See
for bit descriptions.
TCR2
Prescaler
TCR2
TCR2PSCK2
Pre-divider
Clock
Source
Mux
Control
TCR2
Pin
CLOCK
DIV8
Prescaler
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...