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PDF ADSP-BF539 Data sheet ( Hoja de datos )
| Número de pieza | ADSP-BF539 | |
| Descripción | Blackfin Embedded Processor | |
| Fabricantes | Analog Devices | |
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Preliminary Technical Data
FEATURES
1.0 V to 1.2 V core VDD with on-chip voltage regulation
3.3 V tolerant I/O with specific 5 V tolerant pins
316-ball Pb-free mini-BGA package
Up to 500 MHz high performance Blackfin processor
Two 16-bit MACs, two 40-bit ALUs, four 8-bit video ALUs,
40-bit shifter
RISC-like register and instruction model for ease of
programming and compiler friendly support
Advanced debug, trace, and performance monitoring
MEMORY
148K bytes of on-chip memory:
16K bytes of instruction SRAM/cache
64K bytes of instruction SRAM
32K bytes of data SRAM
32K bytes of data SRAM/cache
4K bytes of scratchpad SRAM
512K x 16-bits or 256K x 16-bits of flash memory
(ADSP-BF539F only)
Four dual-channel memory DMA controllers
Memory management unit providing memory protection
Blackfin®
Embedded Processor
ADSP-BF539/ADSP-BF539F
External memory controller with glueless support
for SDRAM, SRAM, flash, and ROM
Flexible memory booting options from SPI®, external
memory
PERIPHERALS
Parallel peripheral interface (PPI),
supporting ITU-R 656 video data formats
Four dual-channel, full-duplex synchronous serial ports, sup-
porting 16 stereo I2S® channels
Two DMA controllers supporting 26 channels
Controller area network (CAN) 2.0B controller
Media transceiver (MXVR) for connection
to a MOST® network
Three SPI-compatible ports
Three timer/counters with PWM support
Three UARTs with support for IrDA®
Two TWI controllers compatible with I2C® industry standard
38 general purpose I/O pins (GPIO)
16 general purpose flag pins (GPF)
Real time clock
Watchdog timer
Debug/JTAG interface
On-chip PLL capable of 0.5x To 64x frequency multiplication
GPIO
PORT
C
GPIO
PORT
D
GPIO
PORT
E
TWI0-1
CAN 2.0B
MXVR
SPI1-2
UART1-2
SPORT2-3
VOLTAGE REGULATOR
JTAG TEST AND EMULATION
PERIPHERAL ACCESS BUS
B
INTERRUPT
CONTROLLER
DMA CORE
BUS 3
DMA
CONTROLLER1
L1
INSTRUCTION
MEMORY
L1
DATA
MEMORY
DMA
CONTROLLER0
DMA CORE
BUS 1
DMA
EXTERNAL
BUS 1
DMA CORE BUS 0
DMA
EXTERNAL
BUS 0
EXTERNAL PORT
FLASH, SDRAM CONTROL
WATCHDOG
TIMER
RTC
PPI
TIM ER 0- 2
SPI0
UART0
SPORT0-1
GPIO
PORT
F
512 KB OR 1 MB
FLASH MEMORY
(ADSP-BF539F ONLY)
BOOT ROM
Figure 1. Functional Block Diagram
Blackfin and the Blackfin logo are registered trademarks of Analog Devices, Inc.
Rev. PrF
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 owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 © 2006 Analog Devices, Inc. All rights reserved.
1 page  
Preliminary Technical Data
regulator provides a range of core voltage levels from a single
2.7 V to 3.6 V input. The voltage regulator can be bypassed at
the user's discretion.
BLACKFIN PROCESSOR CORE
As shown in Figure 2 on Page 6, the Blackfin processor core
contains two 16-bit multipliers, two 40-bit accumulators, two
40-bit ALUs, four video ALUs, and a 40-bit shifter. The compu-
tation units process 8-bit, 16-bit, or 32-bit data from the register
file.
The compute register file contains eight 32-bit registers. When
performing compute operations on 16-bit operand data, the
register file operates as 16 independent 16-bit registers. All
operands for compute operations come from the multiported
register file and instruction constant fields.
Each MAC can perform a 16-bit by 16-bit multiply in each
cycle, accumulating the results into the 40-bit accumulators.
Signed and unsigned formats, rounding, and saturation are
supported.
The ALUs perform a traditional set of arithmetic and logical
operations on 16-bit or 32-bit data. In addition, many special
instructions are included to accelerate various signal processing
tasks. These include bit operations such as field extract and pop-
ulation count, modulo 232 multiply, divide primitives, saturation
and rounding, and sign/exponent detection. The set of video
instructions include byte alignment and packing operations, 16-
bit and 8-bit adds with clipping, 8-bit average operations, and 8-
bit subtract/absolute value/accumulate (SAA) operations. Also
provided are the compare/select and vector search instructions.
For certain instructions, two 16-bit ALU operations can be per-
formed simultaneously on register pairs (a 16-bit high half and
16-bit low half of a compute register). By also using the second
ALU, quad 16-bit operations are possible.
The 40-bit shifter can perform shifts and rotates and is used to
support normalization, field extract, and field deposit
instructions.
The program sequencer controls the flow of instruction execu-
tion, including instruction alignment and decoding. For
program flow control, the sequencer supports PC relative and
indirect conditional jumps (with static branch prediction), and
subroutine calls. Hardware is provided to support zero over-
head looping. The architecture is fully interlocked, meaning that
the programmer need not manage the pipeline when executing
instructions with data dependencies.
The address arithmetic unit provides two addresses for simulta-
neous dual fetches from memory. It contains a multiported
register file consisting of four sets of 32-bit Index, Modify,
Length, and Base registers (for circular buffering), and eight
additional 32-bit pointer registers (for C style indexed stack
manipulation).
Blackfin processors support a modified Harvard architecture in
combination with a hierarchical memory structure. Level 1 (L1)
memories are those that typically operate at the full processor
speed with little or no latency. At the L1 level, the instruction
ADSP-BF539/ADSP-BF539F
memory holds instructions only. The two data memories hold
data, and a dedicated scratchpad data memory stores stack and
local variable information.
In addition, multiple L1 memory blocks are provided, offering a
configurable mix of SRAM and cache. The Memory Manage-
ment Unit (MMU) provides memory protection for individual
tasks that may be operating on the core and can protect system
registers from unintended access.
The architecture provides three modes of operation: User mode,
Supervisor mode, and Emulation mode. User mode has
restricted access to certain system resources, thus providing a
protected software environment, while Supervisor mode has
unrestricted access to the system and core resources.
The Blackfin processor instruction set has been optimized so
that 16-bit opcodes represent the most frequently used instruc-
tions, resulting in excellent compiled code density. Complex
DSP instructions are encoded into 32-bit opcodes, representing
fully featured multifunction instructions. Blackfin processors
support a limited multi-issue capability, where a 32-bit instruc-
tion can be issued in parallel with two 16-bit instructions,
allowing the programmer to use many of the core resources in a
single instruction cycle.
The Blackfin processor assembly language uses an algebraic syn-
tax for ease of coding and readability. The architecture has been
optimized for use in conjunction with the C/C++ compiler,
resulting in fast and efficient software implementations.
MEMORY ARCHITECTURE
The ADSP-BF539/ADSP-BF539F processor views memory as a
single unified 4G byte address space, using 32-bit addresses. All
resources, including internal memory, external memory, and
I/O control registers, occupy separate sections of this common
address space. The memory portions of this address space are
arranged in a hierarchical structure to provide a good cost/per-
formance balance of some very fast, low latency on-chip
memory as cache or SRAM, and larger, lower cost and perfor-
mance off-chip memory systems. See Figure 3 on Page 7.
The L1 memory system is the primary highest performance
memory available to the Blackfin processor. The off-chip mem-
ory system, accessed through the External Bus Interface Unit
(EBIU), provides expansion with SDRAM, flash memory, and
SRAM, optionally accessing up to 132M bytes of physical
memory.
The memory DMA controller provides high bandwidth data
movement capability. It can perform block transfers of code or
data between the internal memory and the external memory
spaces.
Internal (On-chip) Memory
The ADSP-BF539/ADSP-BF539F processor has three blocks of
on-chip memory providing high bandwidth access to the core.
The first is the L1 instruction memory, consisting of 80K bytes
SRAM, of which 16K bytes can be configured as a four way set-
associative cache. This memory is accessed at full processor
speed.
Rev. PrF | Page 5 of 68 | September 2006
5 Page 
Preliminary Technical Data
ADSP-BF539/ADSP-BF539F
ods of external events. These timers can be synchronized to an
external clock input to the PF1 pin (TACLK), an external clock
input to the PPI_CLK pin (TMRCLK), or to the internal SCLK.
The timer units can be used in conjunction with the UART to
measure the width of the pulses in the data stream to provide an
auto-baud detect function for a serial channel.
The timers can generate interrupts to the processor core provid-
ing periodic events for synchronization, either to the system
clock or to a count of external signals.
In addition to the three general purpose programmable timers,
a fourth timer is also provided. This extra timer is clocked by the
internal processor clock and is typically used as a system tick
clock for generation of operating system periodic interrupts.
SERIAL PORTS (SPORTS)
The ADSP-BF539/ADSP-BF539F processor incorporates four
dual-channel synchronous serial ports for serial and multipro-
cessor communications. The SPORTs support the following
features:
• I2S capable operation.
• Bidirectional operation – Each SPORT has two sets of inde-
pendent transmit and receive pins, enabling eight channels
of I2S stereo audio.
• Buffered (8-deep) transmit and receive ports – Each port
has a data register for transferring data words to and from
other processor components and shift registers for shifting
data in and out of the data registers.
• Clocking – Each transmit and receive port can either use an
external serial clock or generate its own, in frequencies
ranging from (fSCLK/131,070) Hz to (fSCLK/2) Hz.
• Word length – Each SPORT supports serial data words
from 3 to 32 bits in length, transferred most significant bit
first or least significant bit first.
• Framing – Each transmit and receive port can run with or
without frame sync signals for each data word. Frame sync
signals can be generated internally or externally, active high
or low, and with either of two pulsewidths and early or late
frame sync.
• Companding in hardware – Each SPORT can perform
A-law or μ-law companding according to ITU recommen-
dation G.711. Companding can be selected on the transmit
and/or receive channel of the SPORT without additional
latencies.
• DMA operations with single-cycle overhead – Each SPORT
can automatically receive and transmit multiple buffers of
memory data. The processor can link or chain sequences of
DMA transfers between a SPORT and memory.
• Interrupts – Each transmit and receive port generates an
interrupt upon completing the transfer of a data word or
after transferring an entire data buffer or buffers through
DMA.
• Multichannel capability – Each SPORT supports 128 chan-
nels out of a 1024 channel window and is compatible with
the H.100, H.110, MVIP-90, and HMVIP standards.
SERIAL PERIPHERAL INTERFACE (SPI) PORTS
The ADSP-BF539/ADSP-BF539F processors incorporate three
SPI compatible ports that enable the processor to communicate
with multiple SPI compatible devices.
The SPI interface uses three pins for transferring data: two data
pins (master output-slave input, MOSIx, and master input-slave
output, MISOx) and a clock pin (serial clock, SCKx). An SPI
chip select input pin (SPIxSS) lets other SPI devices select the
processor. For SPI0, seven SPI chip select output pins
(SPI0SEL7–1) let the processor select other SPI devices. The SPI
select pins are reconfigured GPIO pins. SPI1 and SPI2 each have
a single SPI chip select input pin (SPI1SS and SPI2SS) and each
have a single SPI chip select output pin (SPI1SEL and SPI2SEL)
for SPI point-to-point communication. Using these pins, the
SPI ports provide a full-duplex, synchronous serial interface,
which supports both master/slave modes and multimaster
environments.
The SPI ports’ baud rate and clock phase/polarities are pro-
grammable, and it has an integrated DMA controller,
configurable to support transmit or receive data streams. Each
SPI’s DMA controller can only service unidirectional accesses at
any given time.
The SPI port clock rate is calculated as:
SPI Clock Rate
=
-----------f--S--C---L--K------------
2 × SPI_Baud
Where the 16-bit SPI_Baud register contains a value of 2 to
65,535.
During transfers, the SPI port simultaneously transmits and
receives by serially shifting data in and out on its two serial data
lines. The serial clock line synchronizes the shifting and sam-
pling of data on the two serial data lines.
TWO WIRE INTERFACE
The ADSP-BF539/ADSP-BF539F processor incorporates two
Two Wire Interface (TWI) modules that are compatible with
the Philips Inter-IC bus standard. The TWI modules offer the
capabilities of simultaneous master and slave operation, support
for 7-bit addressing, and multimedia data arbitration. The TWI
also includes master clock synchronization and support for
clock low extension.
The TWI interface uses two pins for transferring clock (SCLx)
and data (SDAx) and supports the protocol at speeds up to 400
kbits/sec.
The TWI interface pins are compatible with 5V logic levels.
UART PORT
The ADSP-BF539/ADSP-BF539F processor incorporates three
full-duplex Universal Asynchronous Receiver/Transmitter
(UART) ports, which are fully compatible with PC standard
UARTs. The UART ports provide a simplified UART interface
to other peripherals or hosts, supporting full-duplex, DMA sup-
ported, asynchronous transfers of serial data. The UART ports
Rev. PrF | Page 11 of 68 | September 2006
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADSP-BF539.PDF ] | |
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