EEWorld咨询电话：82357002，82350740－8068 邮件咨询：datasheet@eeworld.com.cn
器件描述：DUET⑩ DIGITAL Advanced DSP System with FRONTWAVE㈢
器件厂商：GENNUM [Gennum Corporation]
厂商主页：http://www.gennum.com
文件大小：169.89KB
文件页数：10
PDF阅读：GB3212.pdf (点击阅读器件资料)
摘要：
Doc.No. 20352 - 2 [Rev. July 2004]
GB3212 PRELIMINARY DATA SHEET
1 of 10
G
B
321
2
FEATURES
? 4-channel WDRC compression
16-band frequency shaping
16-band adaptive noise reduction
adaptive feedback cancellation
FRONTWAVE
?
directional processing
high fidelity CODEC – dual A/D’s;D/A
16-bit DSP core processor
95dB input dynamic range with HRX? Headroom
Extension
drives zero-bias 2-terminal receivers
thinSTAX? packaging
4 fully configurable memories with audible memory
change indicator
2 memory select pads
internal/external volume control
AGCo with variable threshold and time constants
thinSTAX? PACKAGING
Hybrid typical dimensions:
0.217 x 0.129 x 0.087in.
(5.51 x 3.28 x 2.21mm)
DESCRIPTION
DUET? DIGITAL is a high end DSP system with advanced
adaptive algorithms. The signal processing algorithms run
on a hardware platform which is a combination of a high-
fidelity CODEC and a general purpose DSP core.
Algorithms developed and optimized by Gennum, running
on this powerful platform, offer true speech processing. The
reflowable thinSTAX? packaging enables easy integration
into a wide range of applications, from CIC to BTE.
As shown in the block diagram below, some of the audio
DSP functions are implemented in hardware as a part of our
high fidelity CODEC while other adaptive algorithms such
as Noise Reduction and Feedback Cancellation use the
DSP core. Pre-processing blocks include FRONTWAVE
?
directional processing and programmable filters. Post-
processing blocks include tone generation, volume control,
AGCo and programmable filters.
The GB3212 hybrid code programmed into the EEPROM is
“40”.
This data sheet is part of a set of documents available for
this product. Please refer to Getting Started with DUET?
DIGITAL, Document #29231 for a list of other documents.
BLOCK DIAGRAM
GND SDAMS2N/A N/AMS1
FMIC
MGND
VREG
RMIC
T
OUT-
PGND
OUT+
VBP
VC
A/D
REGULATOR
CODEC
DSP
A/D
A/D
D/A
HBRIDGE
50n
60n
70n
70n
VCVB
5
14
15
16
2
1
10n
EEPROM
FRONTWAVE
BIQUAD
FILTERS
AGC-O
BIQUAD
FILTERS
Frequency Shaping
16 bands
Noise Reduction
16 bands
TONE
GENERATOR
Frequency
Band
Analysis
Frequency
Band
Synthesis
band 1
Σ
band 16
WDRC
4 channels
Adaptive
Feedback
Cancellation
10 13 11 12 4
6
3
8
7
9
17
BIQUAD
FILTERS
DUET? DIGITAL
Advanced DSP System
with FRONTWAVE
?
相关器件：
|
