Cirrus Logic CDB5374 User Manual
Cirrus Logic Hardware

Copyright
© Cirrus Logic, Inc. 2009
(All Rights Reserved)
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
Document Outline
- Features
- Revision History
- Table of Contents
- 1. Initial Setup
- 2. Hardware Description
- 2.1 Block Diagram
- 2.2 Analog Hardware
- 2.3 Digital Hardware
- 2.4 Power Supplies
- 2.5 PCB Layout
- 3. Software Description
- 4. Bill Of Materials
- 5. Layer Plots
- 6. Schematics