Freescale Semiconductor StarCore SC140 - Manual (Page 169)

Event Detection Unit (EDU) Channels and Registers
SC140 DSP Core Reference Manual 4-59
AWS
Bits 9–8 Access Width Selection —
Determines the width of the data access
that should be watched. The different
width types are summarized in the
settings column.
In byte access mode, only the eight LSB
bits of the masked data are compared
with the eight LSB bits of the
EDCD_REF register. One or four
comparisons are performed with logical
OR among them, depending on the
access resolution (byte or quad-byte).
When word access width is chosen, the
sixteen LSB bits of the EDCD_REF
register are compared with each of the
sixteen bits of the masked data. One,
two, or four comparisons are performed
with logical OR among them, depending
on the access resolution (word,
double-word, or quad-word).
When long access width is chosen, then
the 32 LSB bits of the EDCD_REF
register are compared with each of the
32 bits of the masked data. One or two
comparisons are performed with logical
OR among them, depending on the
access resolution (long or double-long).
00 = Byte
01 = Word
10 = Long
11 = Reserved
R
Bit 7 Reserved
Table 4-20. EDCD_CTRL Description (Continued)
Name Description Settings