ADSP-BF561SKBCZ600 Analog Devices Inc, ADSP-BF561SKBCZ600 Datasheet - Page 14

• Manufacturer Part Number: ADSP-BF561SKBCZ600
• Description: DSP Fixed-Point 16-Bit 600MHz 600MIPS 256-Pin CSP-BGA
• Manufacturer: Analog Devices Inc

Specifications of ADSP-BF561SKBCZ600

• Package: 256CSP-BGA
• Numeric And Arithmetic Format: Fixed-Point
• Maximum Speed: 600 MHz
• Ram Size: 32 KB
• Device Million Instructions Per Second: 600 MIPS

ADSP-BF561
The BMODE pins of the Reset Configuration Register, sampled
during power-on resets and software-initiated resets, imple-
ment the following modes:
For each of the boot modes, a boot loading protocol is used to
transfer program and data blocks, from an external memory
device, to their specified memory locations. Multiple memory
blocks may be loaded by any boot sequence. Once all blocks are
loaded, Core A program execution commences from the start of
L1 instruction SRAM (0xFFA0 0000). Core B remains in a held-
off state until a certain register bit is cleared. After that, Core B
will start execution at address 0xFF60 0000.
In addition, bit 4 of the Reset Configuration Register can be set
by application code to bypass the normal boot sequence during
a software reset. For this case, the processor jumps directly to
the beginning of L1 instruction memory.
INSTRUCTION SET DESCRIPTION
The Blackfin processor family assembly language instruction set
employs an algebraic syntax that was designed for ease of coding
and readability. The instructions have been specifically tuned to
provide a flexible, densely encoded instruction set that compiles
to a very small final memory size. The instruction set also pro-
vides fully featured multifunction instructions that allow the
programmer to use many of the processor core resources in a
single instruction. Coupled with many features more often seen
on microcontrollers, this instruction set is very efficient when
compiling C and C++ source code. In addition, the architecture
supports both a user (algorithm/application code) and a super-
visor (O/S kernel, device drivers, debuggers, ISRs) mode of
operations, allowing multiple levels of access to core processor
resources.
The assembly language, which takes advantage of the proces-
sor’s unique architecture, offers the following advantages:
• Execute from 16-bit external memory - Execution starts
• Boot from 8/16-bit external FLASH memory – The 8/16-bit
• Boot from SPI serial EEPROM (16-bit addressable) – The
• Seamlessly integrated DSP/CPU features are optimized for
• A multi-issue load/store modified-Harvard architecture,
from address 0x2000 0000 with 16-bit packing. The boot
ROM is bypassed in this mode. All configuration settings
are set for the slowest device possible (3-cycle hold time,
15-cycle R/W access times, 4-cycle setup).
FLASH boot routine located in boot ROM memory space is
set up using Asynchronous Memory Bank 0. All configura-
tion settings are set for the slowest device possible (3-cycle
hold time; 15-cycle R/W access times; 4-cycle setup).
SPI uses the PF2 output pin to select a single SPI EPROM
device, submits a read command at address 0x0000, and
begins clocking data into the beginning of L1 instruction
memory. A 16-bit addressable SPI-compatible EPROM
must be used.
both 8-bit and 16-bit operations.
which supports two 16-bit MAC or four 8-bit ALU + two
load/store + two pointer updates per cycle.
Rev. PrC | Page 14 of 52 | April 2004
DEVELOPMENT TOOLS
The ADSP-BF561 is supported with a complete set of
CROSSCORE
including Analog Devices emulators and the VisualDSP++®
development environment. The same emulator hardware that
supports other Analog Devices processors also fully emulates
the ADSP-BF561.
The VisualDSP++ project management environment lets pro-
grammers develop and debug an application. This environment
includes an easy-to-use assembler that is based on an algebraic
syntax, an archiver (librarian/library builder), a linker, a loader,
a cycle-accurate instruction-level simulator, a C/C++ compiler,
and a C/C++ run-time library that includes DSP and mathemat-
ical functions. A key point for these tools is C/C++ code
efficiency. The compiler has been developed for efficient trans-
lation of C/C++ code to Blackfin assembly. The Blackfin
processor has architectural features that improve the efficiency
of compiled C/C++ code.
The VisualDSP++ debugger has a number of important fea-
tures. Data visualization is enhanced by a plotting package that
offers a significant level of flexibility. This graphical representa-
tion of user data enables the programmer to quickly determine
the performance of an algorithm. As algorithms grow in com-
plexity, this capability can have increasing significance on the
designer’s development schedule, increasing productivity. Sta-
tistical profiling enables the programmer to non intrusively poll
the processor as it is running the program. This feature, unique
to VisualDSP++, enables the software developer to passively
gather important code execution metrics without interrupting
the real-time characteristics of the program. Essentially, the
developer can identify bottlenecks in software quickly and effi-
ciently. By using the profiler, the programmer can focus on
those areas in the program that impact performance and take
corrective action.
Debugging both C/C++ and assembly programs with the Visu-
alDSP++ debugger, programmers can:
• All registers, I/O, and memory are mapped into a unified
• Microcontroller features, such as arbitrary bit and bit-field
• Code density enhancements, which include intermixing of
• View mixed C/C++ and assembly code (interleaved source
• Insert breakpoints
• Set conditional breakpoints on registers, memory, and
• Trace instruction execution
• Perform linear or statistical profiling of program execution
4G-byte memory space providing a simplified program-
ming model.
manipulation, insertion, and extraction; integer operations
on 8-, 16-, and 32-bit data-types; and separate user and ker-
nel stack pointers.
16- and 32-bit instructions (no mode switching, no code
segregation). Frequently used instructions are encoded as
16-bits.
and object information)
stacks
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software and hardware development tools,
Preliminary Technical Data