GA3219 Datasheet, PDF (2/14 Pages) Gennum Corporation – Venture-TM Digital DSP System

VENTURE GA3219
Features
• Four Fully Configurable Memories with Audible
Memory Change Indicator
• Internal or External Volume Control with
Programmable Range
• AGC−O with Variable Threshold, Time Constants, and
Optional Adaptive Release
• 16 kHz or 8 kHz Bandwidth
• Optimized Programming Speed
• thinSTAX^® Packaging
• E1 RoHS Compliant Hybrid
thinSTAX Packaging
• Hybrid Typical Dimensions:
0.215 x 0.124 x 0.065 in.
(5.46 x 3.15 x 1.65 mm)
VREG 1
FMIC 15
RMIC 14
TIN 2
DAI 3
MGND 16
SDA 12
Voltage
Regulator
A/D
M
U
X
A/D
MIC/TCOIL
COMP
BLOCK DIAGRAM
MS2 MS
5
4
Memory
Select
*
Feedback
Canceller
FrontWave **
Post
Biquad
Filters
AGCO
Tone
Generator
Cross
Fader
Volume
Control
Pre
Biquad
Filters
Programming
Interface
Clock
Generator
Frequency
Band
Analysis
128 bands
WDRC (1,2,4 channels)
Noise Reduction (128 bands)
Graphic EQ (8 bands)
* If Input Mode = 1 mic omni, Mic + Telecoil or Mic + DAI
** If Input Mode = rear only, 2 mic omni, FrontWave or ADM
Figure 1. Hybrid Block Diagram
VB
6
POR
Circuitry
Peak
Clipper
D/A
HBridge
Post
Biquad
Filters
Control
A/D
Wideband
Gain
Frequency
Band
Synthesis
EEPROM
11
GND
7 VBP
8 ^OUT−
9 OUT+
10 PGND
13 ^VC
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