Cirrus-logic CRD5378 Manual do Utilizador

Copyright © Cirrus Logic, Inc. 2008 (All Rights Reserved)www.cirrus.comReference Design Panel (Actual Size)Data Aquisition Board (Actual Size) Control

CRD537810 DS639RD21.4 Self-Testing CRD5378Noise and distortion self-tests can be performed once hardware and software setup is complete.First, initial

CRD5378DS639RD2 11• Once the Setup panel is set, select Configure on the Digital Filter sub-panel.• After digital filter configuration is complete, cl

CRD537812 DS639RD22. HARDWARE DESCRIPTION2.1 Block Diagram Major blocks of the CRD5378 reference design include:• CS3302A Hydrophone Amplifier • CS537

CRD5378DS639RD2 132.2 Analog Hardware2.2.1 Analog Inputs2.2.1.1 External Inputs - INAExternal signals into CRD5378 are from two major classes of senso

CRD537814 DS639RD22.2.1.4 Input ProtectionSensor inputs must have circuitry to protect the analog electronics from voltage spikes. Geophone coilsare s

CRD5378DS639RD2 152.2.1.6 Common Mode BiasDifferential analog signals into the CS3301A/02A amplifiers are required to be biased to the center of thepo

CRD537816 DS639RD22.2.2 Differential AmplifiersThe CS3301A/02A amplifiers act as a low-noise gain stage for internal or external differential analog s

CRD5378DS639RD2 17Analog signal traces out of the CS3301A/02A amplifiers and into the CS5373A modulator are 4-wireINR+, INF+, INF-, INR- quad groups,

CRD537818 DS639RD22.2.4 Delta-Sigma Test DACThe CS5373A test DAC creates differential analog signals for system tests. Multiple test modes are avail-

CRD5378DS639RD2 192.2.5.1 VREF_MODThe voltage reference output is provided to the CS5373A ∆Σ modulator and test DAC through a low-passRC filter. By fi

CRD53782 DS639RD2REVISION HISTORY Revision Date ChangesRD1 JAN 2007 Initial release.RD2 JAN 2008 Upgrade from CS3302 to CS3302A-ISZ/G (U19). Change (R

CRD537820 DS639RD2Amplifier, modulator and test DAC pin settings are controlled through the GPIO port.2.3.1.1 Reset Options - BOOT, PLLImmediately fol

CRD5378DS639RD2 21CS5378 PLL input frequency is specified at reset by the state of the GPIO[4..6]:PLL[0..2] pins, as detailedin the CS5378 data sheet.

CRD537822 DS639RD22.3.2 MicrocontrollerIncluded on CRD5378 is an 8051-type microcontroller with integrated hardware SPI and USB interfaces.This C8051

CRD5378DS639RD2 23.Pin # Pin Name Assignment Description 1 P0.1 SYNC SYNC signal output 2 P0.0 SYNC_IO SYNC signal input from RS-485 3 GND

CRD537824 DS639RD2Many connections to the C8051F320 microcontroller are inactive by default, but are provided for conve-nience during custom reprogram

CRD5378DS639RD2 25Telemetry signals enter CRD5378 through RS-485 transceivers, which are differential current modetransceivers that can reliably drive

CRD537826 DS639RD22.3.3.2 I2C - SCL, SDA, BypassThe I2C® telemetry connections to CRD5378 transmit and receive through RS-485 twisted pairs. Becausesi

CRD5378DS639RD2 272.3.5 External ConnectorPower supplies and telemetry signals route to J26, a 20-pin double row connector with 0.1" spacing. Thi

CRD537828 DS639RD2The +2.5 V and -2.5 V power supplies to the analog components on CRD5378 include reverse biasedSchottky diodes to ground to protect

CRD5378DS639RD2 29plane. Differential traces are routed together with a minimal gap between them so that noise events affectthem equally and are rejec

CRD5378DS639RD2 3Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one n

CRD537830 DS639RD22.5.3 Bypass CapacitorsEach device power supply pin includes 0.1 µF bypass capacitors placed as close as possible to the pin.Each po

CRD5378DS639RD2 313. SOFTWARE DESCRIPTION3.1 Menu BarThe menu bar is always present at the top of the software panels and provides typical File and He

CRD537832 DS639RD23.2 About PanelThe About panel displays copyright information for the Cirrus Seismic Evaluation software.Click OK to exit this panel

CRD5378DS639RD2 333.3 Setup PanelThe Setup panel initializes the evaluation system to perform data acquisition. It consists of the followingsub-panels

CRD537834 DS639RD23.3.1 USB PortThe USB Port sub-panel sets up the USB communication interface between the PC and the target board.Control Description

CRD5378DS639RD2 353.3.2 Digital FilterThe Digital Filter sub-panel sets up the digital filter configuration options.By default the Digital Filter sub-

CRD537836 DS639RD23.3.3 Analog Front EndThe Analog Front End sub-panel configures the amplifier, modulator, and test DAC pin options. Pin op-tions are

CRD5378DS639RD2 373.3.5 Gain/OffsetThe Gain / Offset sub-panel controls the digital filter GAIN and OFFSET registers for each channel.The OFFSET and G

CRD537838 DS639RD23.3.6 Data CaptureThe Data Capture sub-panel collects samples from the target board and sets analysis parameters.When the Capture bu

CRD5378DS639RD2 393.3.7 External MacrosMacros are generated within the Macros sub-panel on the Control panel. Once a macro has been builtit can either

CRD53784 DS639RD2TABLE OF CONTENTS1. INITIAL SETUP ...

CRD537840 DS639RD23.4 Analysis PanelThe Analysis panel is used to display the analysis results on collected data. It consists of the followingcontrols

CRD5378DS639RD2 413.4.1 Test SelectThe Test Select control sets the type of analysis to be run on the collected data set.Control DescriptionTime Domai

CRD537842 DS639RD23.4.2 StatisticsThe Statistics control displays calculated statistics for the selected analysis channel. For multichanneldata captur

CRD5378DS639RD2 43When using the Zoom function, the Cursor is used to select the corners of the area to zoom.3.4.4 ZoomThe ZOOM function allows an are

CRD537844 DS639RD23.5 Control PanelThe Control panel is used to write and read register settings and to send commands to the digital filter.It consist

CRD5378DS639RD2 453.5.1 DF RegistersThe DF Registers sub-panel writes and reads registers within the digital filter. Digital filter registers con-trol

CRD537846 DS639RD23.5.4 MacrosThe Macros sub-panel is designed to write a large number of registers with a single command. This al-lows the target eva

CRD5378DS639RD2 473.5.6 CustomizeThe Customize sub-panel sends commands to upload custom FIR and IIR filter coefficients, upload cus-tom test bit stre

CRD537848 DS639RD24. BILL OF MATERIALS CIRRUS LOGICCRD5378_Rev_A1.PLBILL OF MATERIALItem Cirrus P/N Rev Description Qty Reference Designator MFG MFG P

CRD5378DS639RD2 495. LAYER PLOTS

CRD5378DS639RD2 53.4.8 Plot Error ... 433.5

CRD537850 DS639RD2

CRD5378DS639RD2 51

CRD537852 DS639RD2

CRD5378DS639RD2 53

CRD537854 DS639RD2

CRD5378DS639RD2 55

CRD537856 DS639RD2

CRD5378DS639RD2 576. SCHEMATICS

CRD537858 DS639RD2

CRD5378DS639RD2 59

CRD53786 DS639RD21. INITIAL SETUP1.1 Kit ContentsThe CRD5378 reference design kit includes:• CRD5378 reference design board• USB cable (A to mini-B)•

CRD537860 DS639RD2

CRD5378DS639RD2 61

CRD537862 DS639RD2

CRD5378DS639RD2 63

CRD537864 DS639RD2

CRD5378DS639RD2 71.2.1 Default Jumper Settings* indicates the default 0 Ω jumper installations for CRD5378. Amplifier CS3301A CS3302ACH1 U19 R8 + R9 *

CRD53788 DS639RD21.3 Software Setup1.3.1 PC RequirementsThe PC hardware requirements for the Cirrus Seismic Evaluation system are:• Windows XP®, Windo

CRD5378DS639RD2 9• If prompted for a USB driver, skip to the next step. If not, using Windows Hardware Device Managergo to the properties of the unkno