Multiply Accumulators (Multipliers)
2-32
ADSP-BF535 Blackfin Processor Hardware Reference
The division can be either signed or unsigned, but both the dividend and
divisor must be of the same type. Details about using division and pro-
gramming examples are available in
Blackfin Processor Programming
Reference
.
Special SIMD Video ALU Operations
Four 8-bit Video ALUs enable the ADSP-BF535 processor to process
video information with high efficiency. Each Video ALU instruction may
take from one to four pairs of 8-bit inputs and return one to four 8-bit
results. The inputs are presented to the Video ALUs in two 32-bit words
from the Data Register File. The possible operations include:
• Byte alignment
• Quad-byte-sum absolute differences
• Quad-byte averaging
• Quad-byte pack and unpack
• Addition with trimming
For more information about the operation of these instructions, see
Black-
fin Processor Programming Reference
.
Multiply Accumulators (Multipliers)
The two ADSP-BF535 processor multipliers (MAC0 and MAC1) perform
fixed-point multiplication and multiply and accumulate operations. Mul-
tiply and accumulate operations are available with either cumulative
addition or cumulative subtraction.
Multiplier fixed-point instructions operate on 16-bit fixed-point data and
produce 32-bit results that may be added or subtracted from a 40-bit
accumulator.
Содержание ADSP-BF535 Blackfin
Страница 80: ...Development Tools 1 26 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 312: ...Working With Memory 6 86 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 332: ...System Interfaces 7 20 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 360: ...Dynamic Power Management Controller 8 28 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 446: ...Beginning and Ending an SPI Transfer 10 40 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 522: ...Timing Examples 11 76 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 562: ...IrDA Support 12 40 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 608: ...PCI I O Issues 13 46 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 672: ...References 14 64 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 810: ...SDRAM Controller SDC 18 86 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 811: ...ADSP BF535 Blackfin Processor Hardware Reference 18 87 External Bus Interface Unit...
Страница 812: ...SDRAM Controller SDC 18 88 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 860: ...DMA Bus Debug Registers 20 30 ADSP BF535 Blackfin Processor Hardware Reference...
Страница 908: ...SDRAM Controller External Bus Interface Unit B 36 ADSP BF535 Blackfin Processor Hardware Reference...