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Glossary
The ADSP-BF535 processor has fewer
operate differently than subsequent Blackfin family products. For
more information on the ADSP-BF535 status flags, see
on page
Fractional Convention
Fractional numbers include subinteger components less than ±1. Whereas
decimal fractions appear to the right of a decimal point, binary fractions
appear to the right of a binal point.
In DSP instructions that assume placement of a binal point, for example
in computing sign bits for normalization or for alignment purposes, the
binal point convention depends on the size of the register being used as
shown in
Table 1-4
This processor does not represent fractional values in 8-bit
registers.
Table 1-4. Fractional Conventions
Registers Size
40-bit registers
32-bit registers
16-bit registers
1-16
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
A-3.
and
Figure 1-2 on page
Format
Signed Fractional
Unsigned Fractional
Signed Fractional
Unsigned Fractional
Signed Fractional
Unsigned Fractional
flags and some flags
ASTAT
1-17.
Notation
9.31
1
8.32
0
1.31
1
0.32
0
1.15
1
0.16
0
Table A-1
8
31
8
32
0
31
0
32
0
15
0
16
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