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參數(shù)資料
| 型號： | Eval-AD1940EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | SigmaDSP-TM Multichannel 28-Bit Audio Processor |
| 中文描述： | SigmaDSP的，商標(biāo)多通道28位音頻處理器 |
| 文件頁數(shù)： | 10/32頁 |
| 文件大小： | 478K |
| 代理商： | EVAL-AD1940EB |
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AD1940
FEATURES
The core of the AD1940 is a 28-bit DSP (56-bit with double
precision) optimized for audio processing.
Rev. 0 | Page 10 of 32
The AD1940 contains a program RAM that is initialized from
an internal program ROM on power-up. The program RAM
can be loaded with a custom program after power-up. Signal
processing parameters are stored in a 1024-location parameter
RAM, which is initialized on power-up by an internal boot-
ROM. New values are written to the parameter RAM using the
control port. The values stored in the parameter RAM control
individual signal processing blocks, such as IIR equalization
filters, dynamics processors, audio delays, and mixer levels. A
safeload feature allows parameters to be transparently updated
without causing clicks on the output signals.
The target/slew RAM contains 64 locations and can be used as
channel volume controls or for other parameter updates. These
RAM locations take a target value for a given parameter and
ramp the current parameter value to the new value using a
specified time constant and one of a selection of linear or
logarithmic curves.
The AD1940 has a sophisticated control port that supports
complete read/write capability of all memory locations. Five
control registers (core, RAM configuration, Serial Output 0 to 7,
Serial Output 8 to 15, and serial input) are provided to offer
complete control of the chip’s configuration and serial
modes. Handshaking is included for ease of memory
uploads/downloads.
The AD1940 contains eight independent data capture circuits
that can be programmed to tap the signal flow of the processor
at any point in the DSP algorithm flow. Six of these captured
signals can be accessed by reading from the data capture
registers through the control port. The remaining two data
capture registers can be used to send any internal captured
signal to a stereo digital output signal on Pin SDATA_OUT7 for
driving external DACs or digital analyzers.
The AD1940 has very flexible serial data input/output ports that
allows for glueless interconnection to a variety of ADCs, DACs,
general-purpose DSPs, S/PDIF receivers, and sample rate
converters. The AD1940 can be configured in I
2
S, left-justified,
right-justified, or TDM serial port compatible modes. It can
support 16, 20, and 24 bits in all modes. The AD1940 accepts
serial audio data in MSB first and twos complement format.
The AD1940 operates from a single 2.5 V power supply. It is
fabricated on a single monolithic integrated circuit and is
housed in a 48-lead LQFP package for operation over the
–40°C to +105°C temperature range.
0
28
×
28
DSP CORE
5.23 DATA FORMAT:
VOLTAGE REGULATOR
MEMORY CONTROLLERS
CONTROL
REGISITER
TRAP REG.
SAFELOAD
REGISTER
SERIAL
CONTROL
PORT
MCLK
PLL
DATA MEMORY
6k
×
28
TARRAM
64
×
28
SERIAL
DATA/TDM
INPUT
GROUP
PLL MODE
SELECT
MASTER
CLOCK
INPUT
SPI I/O
GROUP
RESETB
PROGRAM
RAM
1536
×
40
B
B
PARAMETER
RAM
1024
×
28
COEFFICIENT
ROM
512
×
28
2
2
4
4
2
2
SERIAL DATA/
TDM OUTPUT
GROUP
REGULATOR
GROUP
Figure 7. Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD1940MINIB | 制造商:Analog Devices 功能描述:SIGMADSP EVAL BD - Bulk 制造商:Rochester Electronics LLC 功能描述: |
| EVAL-AD1940MINIBZ | 功能描述:BOARD EVAL AD1940 MINI SIGMADSP RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:SigmaDSP® 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| EVAL-AD1941EB | 制造商:Analog Devices 功能描述:EVAL BD SIGMADSPMULTICHANAUDIO PROCESSOR - Bulk |
| EVAL-AD1953EB | 制造商:Analog Devices 功能描述:EVAL BRD FOR 3 CH 24 BIT SIG-PROCESS DAC - Bulk 制造商:Analog Devices 功能描述:EVALUATION KIT ((NS)) |
| EVAL-AD1953EBZ | 制造商:Analog Devices 功能描述:EVAL BRD FOR 3 CH 24 BIT SIG-PROCESS DAC - Bulk |
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