Cirrus Logic CDB5376 - Manual

Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
www.cirrus.com
CDB5376
Multichannel Seismic Evaluation System
Features
z Four-channel Seismic Acquisition Node
– CS3301A geophone amplifiers (2x)
– CS3302A hydrophone amplifiers (2x)
– CS5372A dual
∆Σ modulators (2x)
– CS5376A quad digital filter (1x)
– CS4373A
∆Σ test DAC (1x)
– Precision voltage reference
– Clock recovery PLL
z On-board Microcontroller
– SPI™ interface to digital filter
– USB communication with PC
z PC Evaluation Software
– Register setup & control
– FFT frequency analysis
– Time domain analysis
– Noise histogram analysis
General Description
The CDB5376 board is used to evaluate the functionality
and performance of the Cirrus Logic multichannel seis-
mic chip set. Data sheets for the CS3301A, CS3302A,
CS4373A, CS5371A/72A, and CS5376A devices should
be consulted when using the CDB5376 evaluation
board.
Screw terminals connect external differential geophone
or hydrophone sensors to the analog inputs of the mea-
surement channels. An on-board test DAC creates
precision differential analog signals for in-circuit perfor-
mance testing without an external signal source.
The evaluation board includes an 8051-type microcon-
troller with hardware SPI
™ and USB serial interfaces.
The microcontroller communicates with the digital filter
via SPI and with the PC evaluation software via USB.
The PC software controls register and coefficient initial-
ization and performs time domain, histogram, and FFT
frequency analysis on captured data.
ORDERING INFORMATION
CDB5376 Evaluation Board
JAN ‘08
DS612DB3