
MC68F375
CONFIGURABLE TIMER MODULE (CTM9)
MOTOROLA
REFERENCE MANUAL
Rev. 25 June 03
13-35
and returns the level present at the input pin if an input mode is selected, or the output
value if an output mode is in operation. When one of the output modes is in operation,
the force output function remains available, allowing the software to output the desired
level and simplifying debugging. All DASM registers are accessible during freeze.
13.5.5 DASM Registers
The DASM register map comprises four 16-bit register locations. As shown in Table 13-10, the register block contains three DASM registers and one reserved register. All
unused bits and reserved address locations return zero when read by the software.
Writing to unused bits and reserved address locations has no meaning or effect. All
register addresses in this section are specified as offsets from the base address of the
DASM. In CTM implementations featuring multiple DASMs, each DASM has its own
set of registers.
13.5.5.1 DASMSIC — DASM Status/Interrupt Control Register
Table 13-10 DASM Register Map
Address
15
8 7
0
0xYF F218
DASM3 status/interrupt/control register (DASM3SIC)
0xYF F21A
DASM3 register A (DASM3A)
0xYF F21C
DASM3 register B (DASM3B)
0xYF F220
DASM4 status/interrupt/control register (DASM4SIC)
0xYF F222
DASM4 register A (DASM4A)
0xYF F224
DASM4 register B (DASM4B)
0xYF F248
DASM9 status/interrupt/control register (DASM9SIC)
0xYF F24A
DASM9 register A (DASM9A)
0xYF F24C
DASM9 register B (DASM9)
0xYF F250
DASM10 status/interrupt/control register (DASM10SIC)
0xYF F252
DASM10 register A (DASM10A)
0xYF F254
DASM10 register B (DASM10)
DASM3SIC — DASM Status/Interrupt Control Register
0xYF F218
DASM4SIC
0xYF F220
DASM9SIC
0xYF F248
DASM10SIC
0xYF F250
MSB
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
LSB
0
FLAG
IL2
IL1
IL0
IARB3
0
WOR
BSL
IN
FORC
A
FORC
B
ED-
POL
MODE
3
MODE
2
MODE
1
MODE
0
RESET:
0
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