Cirrus Logic CDB5374 - Manual

Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
www.cirrus.com
CDB5374
Multichannel Marine Seismic Evaluation System
Features
z Four-channel Seismic Acquisition Node
– CS5374 dual amplifier &
∆Σ modulator (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 CDB5374 board is used to evaluate the functionality
and performance of the Cirrus Logic multichannel ma-
rine seismic chip set. Data sheets for the CS5374,
CS5376A, and CS4373A devices should be consulted
when using the CDB5374 evaluation board.
Screw terminals connect external differential hydro-
phone sensors to the analog inputs of the measurement
channels. An on-board test DAC creates precision differ-
ential analog signals for in-circuit performance 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
CDB5374 Evaluation Board
JAN ‘09
DS862DB1