Modular Input/Output Subsystem (MIOS14)
MPC561/MPC563 Reference Manual, Rev. 1.2
17-26
Freescale Semiconductor
17.9
MIOS14 Double Action Submodule (MDASM)
The MIOS14 double action submodule (MDASM) is a function included in the MIOS14 library. It is a
versatile 16-bit dual action submodule capable of performing two event operations before software
intervention is required. It can perform two event operations such as PWM generation and measurement,
input capture, output compare, etc.
The MDASM is composed of two timing channels (A and B), an output flip-flop, an input edge detector
and some control logic. All control and status bits are contained in the MDASM status and control register.
The following sections describe the MDASM in detail. A block diagram of the MDASM is shown in
.
Table 17-15. Prescaler Values
Prescaler Value
(CP in Hex)
MIOS14 Prescaler
Clock Divided By
FF
1
FE
2
FD 3
FC
4
FB
5
FA
6
F9
7
F8
8
......
........
02
254 (2^8 -2)
01
255 (2^8 -1)
00
256 (2^8)
Summary of Contents for MPC561
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