Data Types - Analog Devices ADSP-BF53x Blackfin Reference

Table 2-1. Register File Instruction Summary (Cont'd)
Instruction
An.H = Dreg_hi ;
Dreg_lo = A0 ;
Dreg_hi = A1 ;
Dreg_hi = A1 ;
Dreg_lo = A0 ;
Dreg_lo = A0 ;
Dreg_hi = A1 ;
Dreg = Dreg_byte (Z) ;
Dreg = Dreg_byte (X) ;
1 Warning: Not all register combinations are allowed. For details, see the functional description of
the Move Register instruction in

Data Types

The processor supports 32-bit words, 16-bit half words, and bytes. The
32- and 16-bit words can be integer or fractional, but bytes are always
integers. Integer data types can be signed or unsigned, but fractional data
types are always signed.
Table 2-3 illustrates the formats for data that resides in memory, in the
register file, and in the accumulators. In the table, the letter d represents
one bit, and the letter s represents one signed bit.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
ASTAT Status Flags
AZ AN AC0
AC0_COPY
AC1
– – –
* * –
* * –
* * –
* * –
* ** **
* * **
Chapter 9, "Move."
Computational Units
AV0 AV1 CC
AVS AV1S
– – –
– – –
– – –
– – –
– – –
– – –
– – –
V
V_COPY
VS
–
*
*
*
*
**/–
**/–
2-11