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參數(shù)資料
| 型號(hào)： | ADSP-21262SBBCZ150 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | Embedded Processor |
| 中文描述： | 16-BIT, 50 MHz, OTHER DSP, PBGA136 |
| 封裝： | MO-205AE, BGA-136 |
| 文件頁(yè)數(shù)： | 6/48頁(yè) |
| 文件大小： | 401K |
| 代理商： | ADSP-21262SBBCZ150 |
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Rev. B
|
Page 6 of 48
|
August 2005
ADSP-21262
Fourier transforms. The two DAGs of the ADSP-21262 contain
sufficient registers to allow the creation of up to 32 circular buff-
ers (16 primary register sets, 16 secondary). The DAGs
automatically handle address pointer wraparound, reduce over-
head, increase performance, and simplify 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-21262 can conditionally execute a multiply, an add, and a
subtract in both processing elements while branching and fetch-
ing up to four 32-bit values from memory—all in a single
instruction.
ADSP-21262 MEMORY AND I/O INTERFACE
FEATURES
The ADSP-21262 adds the following architectural features to
the SIMD SHARC family core:
Dual-Ported On-Chip Memory
The ADSP-21262 contains two megabits of internal SRAM and
four megabits of internal mask-programmable ROM. Each
block can be configured for different combinations of code and
data storage (see memory map,
Figure 3
). Each memory block is
dual-ported for single-cycle, independent accesses by the core
processor and I/O processor. The dual-ported memory, in com-
bination with three separate on-chip buses, allows two data
transfers from the core and one from the I/O processor, in a sin-
gle cycle.
The ADSP-21262’s SRAM can be configured as a maximum of
64K words of 32-bit data, 128K words of 16-bit data, 42K words
of 48-bit instructions (or 40-bit data), or combinations of differ-
ent word sizes up to two megabits. All of the memory can be
accessed as 16-bit, 32-bit, 48-bit, or 64-bit words. A 16-bit float-
ing-point storage format is supported that effectively doubles
the amount of data that may be stored on-chip. Conversion
between the 32-bit floating-point and 16-bit floating-point for-
mats is performed in a single instruction. While each memory
block can store combinations of code and data, accesses are
most efficient when one block stores data using the DM bus for
transfers, and the other block stores instructions and data using
the PM bus for transfers.
Using the DM bus and PM buses, with one dedicated to each
memory block, assures single-cycle execution with two data
transfers. In this case, the instruction must be available in
the cache.
DMA Controller
The ADSP-21262’s on-chip DMA controller allows zero-over-
head data transfers without processor intervention. The DMA
controller operates independently and invisibly to the processor
core, allowing DMA operations to occur while the core is simul-
taneously executing its program instructions. DMA transfers
can occur between the ADSP-21262’s internal memory and its
serial ports, the SPI-compatible (serial peripheral interface)
port, the IDP (input data port), parallel data acquisition port
(PDAP), or the parallel port. Twenty-two channels of DMA are
available on the ADSP-21262—one for the SPI, 12 via the serial
ports, eight via the input data port, and one via the processor’s
parallel port. Programs can be downloaded to the ADSP-21262
using DMA transfers. Other DMA features include interrupt
generation upon completion of DMA transfers, and DMA
chaining for automatic linked DMA transfers.
Digital Applications Interface (DAI)
The digital applications interface provides the ability to connect
various peripherals to any of the SHARC’s DAI pins
(DAI_P20–1).
Connections are made using the signal routing unit (SRU,
shown in the block diagram
on Page 1
).
The SRU is a matrix routing unit (or group of multiplexers) that
enables the peripherals provided by the DAI to be intercon-
nected under software control. This allows easy use of the DAI
associated peripherals for a much wider variety of applications
by using a larger set of algorithms than is possible with noncon-
figurable signal paths.
The DAI also includes six serial ports, two precision clock gen-
erators (PCGs), an input data port (IDP), six flag outputs and
six flag inputs, and three timers. The IDP provides an additional
input path to the ADSP-21262 core, configurable as either eight
channels of I
2
S or serial data, or as seven channels plus a single
20-bit wide synchronous parallel data acquisition port. Each
data channel has its own DMA channel that is independent
from the ADSP-21262’s serial ports.
For complete information on using the DAI, see the
ADSP-2126x SHARC DSP Peripherals Manual
.
Serial Ports
The ADSP-21262 features six full duplex synchronous serial
ports that provide an inexpensive interface to a wide variety of
digital and mixed-signal peripheral devices such as the Analog
Devices AD183x family of audio codecs, ADCs, and DACs. The
serial ports are made up of two data lines, a clock, and frame
sync. The data lines can be programmed to either transmit or
receive and each data line has its own dedicated DMA channel.
Serial ports are enabled via 12 programmable and simultaneous
receive or transmit pins that support up to 24 transmit or 24
receive channels of serial data when all six SPORTs are enabled,
or six full duplex TDM streams of 128 channels per frame.
The serial ports operate at up to one-quarter of the DSP core
clock rate, providing each with a maximum data rate of
50M bit/sec for a 200 MHz core and 37.5M bit/sec for a
150 MHz core. Serial port data can be automatically transferred
to and from on-chip memory via a dedicated DMA. Each of the
serial ports can work in conjunction with another serial port to
provide TDM support. One SPORT provides two transmit sig-
nals while the other SPORT provides the two receive signals.
The frame sync and clock are shared.
Serial ports operate in four modes:
Standard DSP serial mode
Multichannel (TDM) mode
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參數(shù)描述 |
|---|---|
| ADSP-21262SKATZ-200 | 制造商:Analog Devices 功能描述: |
| ADSP-21262SKBC-200 | 功能描述:IC DSP 32BIT 200MHZ 136-CSPBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號(hào)處理器） 系列:SHARC® 標(biāo)準(zhǔn)包裝:2 系列:StarCore 類型:SC140 內(nèi)核 接口:DSI，以太網(wǎng)，RS-232 時(shí)鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:1.436MB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:-40°C ~ 105°C 安裝類型:表面貼裝 封裝/外殼:431-BFBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:431-FCPBGA（20x20） 包裝:托盤 |
| ADSP-21262SKBC200R | 制造商:Analog Devices 功能描述:DSP Floating-Point 32-Bit 200MHz 200MIPS 136-Pin CSP-BGA T/R |
| ADSP-21262SKBC-200X | 制造商:Analog Devices 功能描述: |
| ADSP-21262SKBCZ200 | 功能描述:IC DSP CTLR 32BIT 136CSPBGA RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號(hào)處理器） 系列:SHARC® 標(biāo)準(zhǔn)包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點(diǎn) 接口:I²C，McASP，McBSP 時(shí)鐘速率:400MHz 非易失內(nèi)存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA |
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