Modular Input/Output Subsystem (MIOS14)
MPC561/MPC563 Reference Manual, Rev. 1.2
17-62
Freescale Semiconductor
17.11.4 Modular I/O Bus (MIOB) Interface
•
The MPIOSM is connected to all the signals in the read/write and control bus, to allow data transfer
from and to the MPIOSM registers, and to control the MPIOSM in the different possible situations.
•
The MPIOSM does not use the counter bus set and is therefore not connected to it.
•
The MPIOSM does not generate any interrupts and is therefore not connected to this bus.
17.11.5 Effect of RESET on MPIOSM
When the RESET signal is asserted, all the DDR bits are cleared. The data bits are undefined after reset.
17.11.6 MPIOSM Testing
No special test logic has been implemented in this submodule. To be flexible while selecting the number
of implemented signals, the test patterns are implemented in a bit per bit modular fashion.
17.11.7 MPIOSM Registers
The privilege level to access to the MPIOSM registers depends on the MIOS14MCR[SUPV]. The
privilege level is unrestricted after reset and can be change to supervisor by software.
17.11.8 MPIOSM Register Organization
17.11.8.1 MPIOSM Data Register (MPIOSMDR)
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
0x30 6100
MPIOSM Data Register (MPIOSMDR)
0x30 6102
MPIOSM Data Direction Register (MPIOSMDDR)
0x30 6104
Reserved
0x30 6106
Reserved
Figure 17-31. MPIOSM
—
Register Organization
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field Data
15
Data
14
Data
13
Data
12
Data
11
Data
10
Data
9
Data
8
Data
7
Data
6
Data
5
Data
4
Data
3
Data
2
Data
1
Data
0
SRESET
Undefined
Addr
0x30 6100
Figure 17-32. MPIOSM Data Register
(MPIOSMDR)
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...