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PDF ADSP-21368 Data sheet ( Hoja de datos )
| Número de pieza | ADSP-21368 | |
| Descripción | SHARC Processor | |
| Fabricantes | Analog Devices | |
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SHARC Processor
ADSP-21367/ADSP-21368/ADSP-21369
SUMMARY
High performance 32-bit/40-bit floating-point processor
optimized for high performance audio processing
Single-instruction, multiple-data (SIMD) computational
architecture
On-chip memory—2M bits of on-chip SRAM and 6M bits of
on-chip mask programmable ROM
Code compatible with all other members of the SHARC family
The ADSP-21367/ADSP-21368/ADSP-21369 are available
with a 400 MHz core instruction rate with unique audiocen-
tric peripherals such as the digital applications interface,
S/PDIF transceiver, serial ports, 8-channel asynchronous
sample rate converter, precision clock generators, and
more. For complete ordering information, see Ordering
Guide on Page 61.
DEDICATED AUDIO COMPONENTS
S/PDIF-compatible digital audio receiver/transmitter
4 independent asynchronous sample rate converters (SRC)
16 PWM outputs configured as four groups of four outputs
ROM-based security features include
JTAG access to memory permitted with a 64-bit key
Protected memory regions that can be assigned to limit
access under program control to sensitive code
PLL has a wide variety of software and hardware multi-
plier/divider ratios
Available in 256-ball BGA_ED and 208-lead LQFP_EP
packages
SIMD Core
Instruction
Cache
5 stage
Sequencer
DAG1/2
Timer
PEx PEy
FLAGx/IRQx/
TMREXP
JTAG
Block 0
RAM/ROM
Internal Memory
Block 1
RAM/ROM
Block 2
RAM
Block 3
RAM
DMD
64-BIT
S
DMD 64-BIT
PMD
64-BIT
Core Bus
Cross Bar
PERIPHERAL BUS
32-BIT
PMD 64-BIT
EPD BUS 32-BIT
B0D
64-BIT
B1D
64-BIT
B2D
64-BIT
Internal Memory I/F
IOD0 32-BIT
B3D
64-BIT
IOD1
32-BIT
PERIPHERAL BUS
IOD0 BUS
MTM
EP
CORE PCG
FLAGS C-D
TIMER
2-0
TWI
SPI/B
UART
1-0
S/PDIF PCG
Tx/Rx A-D
ASRC IDP/ SPORT
3-0 PDAP 7-0
7-0
CORE PWM
FLAGS 3-0
AMI SDRAM
DPI Routing/Pins
DPI Peripherals
DAI Routing/Pins
DAI Peripherals
External Port Pin MUX
Peripherals
External
Port
Figure 1. Functional Block Diagram
SHARC and the SHARC logo are registered trademarks of Analog Devices, Inc.
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADSP-21367/ADSP-21368/ADSP-21369
SIMD Computational Engine
The processors contain two computational processing elements
that operate as a single-instruction, multiple-data (SIMD)
engine. The processing elements are referred to as PEX and PEY
and each contains an ALU, multiplier, shifter, and register file.
PEX is always active, and PEY may be enabled by setting the
PEYEN mode bit in the MODE1 register. When this mode is
enabled, the same instruction is executed in both processing ele-
ments, but each processing element operates on different data.
This architecture is efficient at executing math intensive DSP
algorithms.
Entering SIMD mode also has an effect on the way data is trans-
ferred between memory and the processing elements. When in
SIMD mode, twice the data bandwidth is required to sustain
computational operation in the processing elements. Because of
this requirement, entering SIMD mode also doubles the band-
width between memory and the processing elements. When
using the DAGs to transfer data in SIMD mode, two data values
are transferred with each access of memory or the register file.
Independent, Parallel Computation Units
Within each processing element is a set of computational units.
The computational units consist of an arithmetic/logic unit
(ALU), multiplier, and shifter. These units perform all opera-
tions in a single cycle. The three units within each processing
element are arranged in parallel, maximizing computational
throughput. Single multifunction instructions execute parallel
ALU and multiplier operations. In SIMD mode, the parallel
ALU and multiplier operations occur in both processing
elements. These computation units support IEEE 32-bit single-
precision floating-point, 40-bit extended precision floating-
point, and 32-bit fixed-point data formats.
Data Register File
A general-purpose data register file is contained in each pro-
cessing element. The register files transfer data between the
computation units and the data buses, and store intermediate
results. These 10-port, 32-register (16 primary, 16 secondary)
register files, combined with the ADSP-2136x enhanced Har-
vard architecture, allow unconstrained data flow between
computation units and internal memory. The registers in PEX
are referred to as R0–R15 and in PEY as S0–S15.
Context Switch
Many of the processor’s registers have secondary registers that
can be activated during interrupt servicing for a fast context
switch. The data registers in the register file, the DAG registers,
and the multiplier result registers all have secondary registers.
The primary registers are active at reset, while the secondary
registers are activated by control bits in a mode control register.
Universal Registers
These registers can be used for general-purpose tasks. The
USTAT (4) registers allow easy bit manipulations (Set, Clear,
Toggle, Test, XOR) for all system registers (control/status) of
the core.
The data bus exchange register (PX) permits data to be passed
between the 64-bit PM data bus and the 64-bit DM data bus, or
between the 40-bit register file and the PM data bus. These reg-
isters contain hardware to handle the data width difference.
Timer
A core timer that can generate periodic software Interrupts. The
core timer can be configured to use FLAG3 as a timer expired
signal.
Single-Cycle Fetch of Instruction and Four Operands
The ADSP-21367/ADSP-21368/ADSP-21369 feature an
enhanced Harvard architecture in which the data memory
(DM) bus transfers data and the program memory (PM) bus
transfers both instructions and data (see Figure 2 on Page 4).
With separate program and data memory buses and on-chip
instruction cache, the processors can simultaneously fetch four
operands (two over each data bus) and one instruction (from
the cache), all in a single cycle.
Instruction Cache
The processors include an on-chip instruction cache that
enables three-bus operation for fetching an instruction and four
data values. The cache is selective—only the instructions whose
fetches conflict with PM bus data accesses are cached. This
cache allows full-speed execution of core, looped operations
such as digital filter multiply-accumulates, and FFT butterfly
processing.
Data Address Generators with Zero-Overhead Hardware
Circular Buffer Support
The ADSP-21367/ADSP-21368/ADSP-21369 have two data
address generators (DAGs). The DAGs are used for indirect
addressing and implementing circular data buffers in hardware.
Circular buffers allow efficient programming of delay lines and
other data structures required in digital signal processing, and
are commonly used in digital filters and Fourier transforms.
The two DAGs contain sufficient registers to allow the creation
of up to 32 circular buffers (16 primary register sets, 16 second-
ary). The DAGs automatically handle address pointer
wraparound, reduce overhead, increase performance, and sim-
plify implementation. Circular buffers can start and end at any
memory location.
Flexible Instruction Set
The 48-bit instruction word accommodates a variety of parallel
operations for concise programming. For example, the
ADSP-21367/ADSP-21368/ADSP-21369 can conditionally exe-
cute a multiply, an add, and a subtract in both processing
elements while branching and fetching up to four 32-bit values
from memory—all in a single instruction.
On-Chip Memory
The processors contain two megabits of internal RAM and six
megabits of internal mask-programmable ROM. Each block can
be configured for different combinations of code and data stor-
age (see Table 3 on Page 6). Each memory block supports
single-cycle, independent accesses by the core processor and I/O
Rev. F | Page 5 of 64 | October 2013
5 Page 
ADSP-21367/ADSP-21368/ADSP-21369
VDDINT
100nF
10nF
1nF
ADSP-213xx
AVDD
HI-Z FERRITE
BEAD CHIP
AVSS
LOCATE ALL COMPONENTS
CLOSE TO AVDD AND AVSS PINS
Figure 3. Analog Power (AVDD) Filter Circuit
Target Board JTAG Emulator Connector
Analog Devices DSP Tools product line of JTAG emulators uses
the IEEE 1149.1 JTAG test access port of the ADSP-21367/
ADSP-21368/ADSP-21369 processors to monitor and control
the target board processor during emulation. Analog Devices
DSP Tools product line of JTAG emulators provides emulation
at full processor speed, allowing inspection and modification of
memory, registers, and processor stacks. The processor’s JTAG
interface ensures that the emulator will not affect target system
loading or timing.
For complete information on Analog Devices’ SHARC DSP
Tools product line of JTAG emulator operation, see the appro-
priate “Emulator Hardware User’s Guide.”
DEVELOPMENT TOOLS
Analog Devices supports its processors with a complete line of
software and hardware development tools, including integrated
development environments (which include CrossCore® Embed-
ded Studio and/or VisualDSP++®), evaluation products,
emulators, and a wide variety of software add-ins.
Integrated Development Environments (IDEs)
For C/C++ software writing and editing, code generation, and
debug support, Analog Devices offers two IDEs.
The newest IDE, CrossCore Embedded Studio, is based on the
EclipseTM framework. Supporting most Analog Devices proces-
sor families, it is the IDE of choice for future processors,
including multicore devices. CrossCore Embedded Studio
seamlessly integrates available software add-ins to support real
time operating systems, file systems, TCP/IP stacks, USB stacks,
algorithmic software modules, and evaluation hardware board
support packages. For more information visit
www.analog.com/cces.
The other Analog Devices IDE, VisualDSP++, supports proces-
sor families introduced prior to the release of CrossCore
Embedded Studio. This IDE includes the Analog Devices VDK
real time operating system and an open source TCP/IP stack.
For more information visit www.analog.com/visualdsp. Note
that VisualDSP++ will not support future Analog Devices
processors.
EZ-KIT Lite Evaluation Board
For processor evaluation, Analog Devices provides wide range
of EZ-KIT Lite® evaluation boards. Including the processor and
key peripherals, the evaluation board also supports on-chip
emulation capabilities and other evaluation and development
features. Also available are various EZ-Extenders®, which are
daughter cards delivering additional specialized functionality,
including audio and video processing. For more information
visit www.analog.com and search on “ezkit” or “ezextender”.
EZ-KIT Lite Evaluation Kits
For a cost-effective way to learn more about developing with
Analog Devices processors, Analog Devices offer a range of EZ-
KIT Lite evaluation kits. Each evaluation kit includes an EZ-KIT
Lite evaluation board, directions for downloading an evaluation
version of the available IDE(s), a USB cable, and a power supply.
The USB controller on the EZ-KIT Lite board connects to the
USB port of the user’s PC, enabling the chosen IDE evaluation
suite to emulate the on-board processor in-circuit. This permits
the customer to download, execute, and debug programs for the
EZ-KIT Lite system. It also supports in-circuit programming of
the on-board Flash device to store user-specific boot code,
enabling standalone operation. With the full version of Cross-
Core Embedded Studio or VisualDSP++ installed (sold
separately), engineers can develop software for supported EZ-
KITs or any custom system utilizing supported Analog Devices
processors.
Software Add-Ins for CrossCore Embedded Studio
Analog Devices offers software add-ins which seamlessly inte-
grate with CrossCore Embedded Studio to extend its capabilities
and reduce development time. Add-ins include board support
packages for evaluation hardware, various middleware pack-
ages, and algorithmic modules. Documentation, help,
configuration dialogs, and coding examples present in these
add-ins are viewable through the CrossCore Embedded Studio
IDE once the add-in is installed.
Board Support Packages for Evaluation Hardware
Software support for the EZ-KIT Lite evaluation boards and EZ-
Extender daughter cards is provided by software add-ins called
Board Support Packages (BSPs). The BSPs contain the required
drivers, pertinent release notes, and select example code for the
given evaluation hardware. A download link for a specific BSP is
located on the web page for the associated EZ-KIT or EZ-
Extender product. The link is found in the Product Download
area of the product web page.
Rev. F | Page 11 of 64 | October 2013
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADSP-21368.PDF ] | |
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