Modular Input/Output Subsystem (MIOS14)
MPC561/MPC563 Reference Manual, Rev. 1.2
17-24
Freescale Semiconductor
17.8.5.3
MMCSM Modulus Latch Register (MMCSMML)
17.8.5.4
MMCSM Status/Control Register (MMCSMSCRD)
(Duplicated)
The MMCSMSCRD and the MMCSMSCR are the same registers accessed at two different addresses.
Reading or writing to one of these two addresses has exactly the same effect.
The duplication of the SCR register allows coherent 32-bit accesses when using a RCPU.
WARNING
The user should not write directly to the address of the MMCSMSCRD.
This register’s address may be reserved for future use and should not be
accessed by the software to ensure future software compatibility.
17.8.5.5
MMCSM Status/Control Register (MMCSMSCR)
The status/control register (SCR) is a collection of read-only signal status bits, read/write control bits and
an 8-bit read/write data register, as detailed below.
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field
ML
SRESET
Undefined
Addr
0x30 6032, 0x30 603A, 0x30 6042, 0x30 60B2, 0x30 60BA, 0x30 60C2
Figure 17-13. MMCSM Modulus Latch Register
(MMCSMML)
Table 17-11. MMCSMML Bit Descriptions
Bits
Name
Description
0:15
ML
Modulus latches — These bits are read/write data bits containing the 16-bit modulus value to be
loaded into the up-counter.
The value loaded in this register must be the one’s complement of the desired modulus count.
The up-counter increments from this one’s complement value up to 0xFFFF to get the correct
number of steps before an overflow is generated to reload the modulus value into the up-counter.
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LSB
15
Field PINC
PINL FREN EDGN EDGP
CLS
—
CP
SRESET
Undefined
Addr
0x30 6036, 0x30 603E, 0x30 6046, 0x30 60B6, 0x30 60BE, 0x30 60C6
Figure 17-14. MMCSM Status/Control Register
(MMCSMSCR)
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...
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