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AD21462WBBZ3 Arkusz danych(PDF) 2 Page - Analog Devices

Numer części AD21462WBBZ3
Szczegółowy opis  SHARC Processor material that is subject to change without notice
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AD21462WBBZ3 Arkusz danych(HTML) 2 Page - Analog Devices

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Rev. PrA
|
Page 2 of 60
|
November 2008
ADSP-21462W/ADSP-21465W/ADSP-21467
Preliminary Technical Data
KEY FEATURESPROCESSOR CORE
At up to 450 MHz core instruction rate, the processor per-
forms at 2.7 GFLOPS/900 MMACs
5 Mbits on-chip RAM, 4 Mbits on-chip ROM for simultaneous
access by the core processor and DMA
DDR2 DRAM interface (16-bit) operating at maximum fre-
quency of half the core clock frequency
Dual data address generators (DAGs) with modulo and bit-
reverse addressing
Zero-overhead looping with single-cycle loop setup, provid-
ing efficient program sequencing
VISA (variable instruction set) execution support
Single instruction multiple data (SIMD) architecture
provides:
Two computational processing elements
Concurrent execution
Code compatibility with other SHARC family members at
the assembly level
Parallelism in buses and computational units allows:
Single cycle executions (with or without SIMD) of a mul-
tiply operation, an ALU operation, a dual memory read
or write, and an instruction fetch
Transfers between memory and core at a sustained
7.2 Gbytes/second bandwidth
FFT accelerator implements radix-2 complex/real input, com-
plex output FFT with no core intervention
IIR accelerators perform dedicated IIR filtering with high-per-
formance, fixed- and floating-point processing capabilities
with no core intervention
FIR accelerators perform dedicated FIR filtering with high-
performance, fixed- and floating-point processing capabil-
ities with no core intervention
Program sequencer can execute code directly from external
memory bank 0 (SRAM, as well as DDR2 DRAM). This allows
more options to a user in terms of code storage.
New opcodes of 16 and 32 bits are supported in addition to
the existing 48 bit opcodes. Variable Instruction Set Archi-
tecture (VISA) execution from external DDR2 DRAM
memory is also supported.
INPUT/OUTPUT FEATURES
Two 8-bit wide link ports can connect to the link ports of
other SHARCs or peripherals. Link ports are bidirectional
programmable ports having eight data lines, an acknowl-
edge line and a clock line
DMA controller supports
67 DMA channels for transfers between internal memory
and a variety of peripherals
DMA transfers at peripheral clock speed, in parallel with
full-speed processor execution
External port provides glueless connection to 16-bit wide
synchronous DDR2 DRAM using a dedicated DDR2 DRAM
controller, and 8-bit wide asynchronous memory devices
using asynchronous memory interface (AMI)
Programmable wait state options (for AMI) 2 to 31
DDR2_CLK cycles
Delay-line DMA engine maintains circular buffers in exter-
nal memory with tap/offset based reads
16-bit data access for synchronous DDR2 DRAM memory
8-bit data access for asynchronous memory
4 memory select lines allows multiple external memory
devices
Digital audio interface (DAI) includes eight serial ports, four
precision clock generators, an input data port, an S/PDIF
transceiver, and a signal routing unit
Digital peripheral interface (DPI) includes, two timers, one
UART, and two SPI ports, a DTCP cipher (ADSP-21462W
and ADSP-21465W), and a two-wire interface port
Outputs of PCG A and B can be routed through DAI pins
Outputs of PCG C and D can be driven on to DAI as well as
DPI pins
Eight dual data line serial ports — each has a clock, frame
sync, and two data lines that can be configured as either a
receiver or transmitter pair
TDM support for telecommunications interfaces including
128 TDM channel support for newer telephony interfaces
such as H.100/H.110
Up to 16 TDM stream support, each with 128 channels per
frame
Companding selection on a per channel basis in TDM mode
Input data port (IDP), configurable as eight channels of serial
data or seven channels of serial data and up to a 20-bit
wide parallel data channel
Signal routing unit provides configurable and flexible con-
nections between the various peripherals and the DAI/DPI
components
4 independent asynchronous sample rate converters (ASRC).
Each converter has separate serial input and output ports,
a de-emphasis filter providing up to –128 dB SNR perfor-
mance, stereo sample rate converter and supports left-
justified, I2S, TDM, and right-justified modes and 24-, 20-,
18-, and 16-audio data word lengths.
An MLB (media local bus) interface allows the processor to
support for both 3-pin as well as 5-pin media local bus pro-
tocols (ADSP-21462W and ADSP-21465W).
2 muxed flag/IRQ lines
1 muxed flag/IRQ /AMI_MS pin
1 muxed flag/Timer expired line /AMI_MS pin
S/PDIF-compatible digital audio receiver/transmitter sup-
ports EIAJ CP-340 (CP-1201), IEC-958, AES/EBU standards
Left-justified, I2S or right-justified serial data input with
16-, 18-, 20- or 24-bit word widths (transmitter)
Pulse-width modulation provides:
16 PWM outputs configured as four groups of four outputs
supports center-aligned or edge-aligned PWM waveforms
PLL has a wide variety of software and hardware multi-
plier/divider ratios
Thermal diode to monitor die temperature
Available in 19 mm by 19 mm PBGA package (see Ordering
Guide on Page 59)


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