Cirrus-logic CDB5378 Manuel d'utilisateur

Copyright © Cirrus Logic, Inc. 2007(All Rights Reserved)www.cirrus.comCDB5378Single-channel Seismic Evaluation SystemFeaturesz Single-channel Seismic

CDB537810 DS639DB41.2.2 Default DIP Switch Settings Table 5. RS-485 Default Jumper SettingsJ14I2C ClockSCL+ 1 ---------- 2SCL- 3 ---------- 4SCL 5 **6

CDB5378DS639DB4 111.3 Software Setup1.3.1 PC RequirementsThe PC hardware requirements for the Cirrus Seismic Evaluation system are:• Windows XP, Windo

CDB537812 DS639DB4CDB5378 as an unknown USB device.• If prompted for a USB driver, skip to the next step. If not, using Windows Hardware Device Manage

CDB5378DS639DB4 131.4 Self-testing CDB5378Noise and distortion self-tests can be performed once hardware and software setup are complete.First, initia

CDB537814 DS639DB4• Once the Setup panel is set, select Configure on the Digital Filter sub-panel.• After digital filter configuration is complete, cl

CDB5378DS639DB4 152. HARDWARE DESCRIPTION2.1 Block Diagram Major blocks of the CDB5378 evaluation board include:• CS3301A Geophone Amplifier• CS5373A

CDB537816 DS639DB42.2 Analog Hardware2.2.1 Analog Inputs2.2.1.1 External Inputs - INA, INB, BNCExternal signals into CDB5378 are from two major classe

CDB5378DS639DB4 17By default, CDB5378 is populated with passive RC filter components on the INA inputs, and no filter com-ponents on the INB inputs (t

CDB537818 DS639DB42.2.1.6 Common Mode BiasDifferential analog signals into the CS3301A/02A amplifiers are required to be biased to the center of thepo

CDB5378DS639DB4 192.2.2 Differential AmplifiersThe CS3301A/02A amplifiers act as a low-noise gain stage for internal or external differential analog s

CDB53782 DS639DB4Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one n

CDB537820 DS639DB4The CS3301A/02A amplifier outputs require a differential anti-alias RC filter, which is created by connect-ing external 680 Ω series

CDB5378DS639DB4 212.2.4 Delta-Sigma Test DACThe CS5373A ∆Σ DAC creates differential analog signals for system tests. Multiple test modes are avail-abl

CDB537822 DS639DB42.2.5 Voltage ReferenceA voltage reference on CDB5378 creates a precision voltage from the regulated analog supplies for theCS5373A

CDB5378DS639DB4 23Configuration and data collection are through the SPI port.Modulator ∆Σ data is input through the modulator interface, and test DAC

CDB537824 DS639DB42.3.1.2 Configuration - SPI PortOn CDB5378, configuration of the digital filter is through the SPI port by the on-board 8051 microco

CDB5378DS639DB4 25If no system clock is supplied to CDB5378, the DIGITAL FILTER CLOCK jumper (J16) can select a PLLinput clock from a local oscillator

CDB537826 DS639DB4 cdb5378.v///////////////////////////////////////////////////////////////////////////// MODULE: CDB5378 top module//// FILE N

CDB5378DS639DB4 272.3.3 Digital Control SignalsThe reset, synchronization and timebreak signals to the CS5378 digital filter can be generated by pushb

CDB537828 DS639DB4Pin # Pin Name Assignment Description 1 P0.1 SYNC_IO SYNC signal input from RS-485 2 P0.0 SYNC_MC SYNC signal output 3 GND

CDB5378DS639DB4 29Many connections to the C8051F320 microcontroller are inactive by default, but are provided for conve-nience during custom reprogram

CDB5378DS639DB4 3TABLE OF CONTENTS1. INITIAL SETUP ...

CDB537830 DS639DB4Telemetry signals enter CDB5378 through RS-485 transceivers, which are differential current mode trans-ceivers that can reliably dri

CDB5378DS639DB4 312.3.5.2 I2C - SCL, SDA, BypassThe I2C telemetry connections to CDB5378 transmit and receive through RS-485 twisted pairs. Becausesig

CDB537832 DS639DB42.3.7 External ConnectorPower supplies and telemetry signals route to a 20-pin double row connector with 0.1" spacing (J26). Th

CDB5378DS639DB4 33The VA+ and VA- power supplies to the analog components on CDB5378 can be jumpered to use regu-lated bipolar power supplies (+2.5 V,

CDB537834 DS639DB4The VD and VCORE power supplies on CDB5378 include reverse-biased Schottkey diodes to ground toprotect against reverse voltages that

CDB5378DS639DB4 35modulator is a 4-wire INR+, INF+, INF-, INR- quad group, and is routed with INF+ and INF- as a traditionaldifferential pair and INR+

CDB537836 DS639DB42.5.4 Dual-row HeadersTo simplify signal tracing on CDB5378, all device pins connect to dual-row headers. These dual-row head-ers ar

CDB5378DS639DB4 373. SOFTWARE DESCRIPTION3.1 Menu BarThe menu bar is always present at the top of the software panels and provides typical File and He

CDB537838 DS639DB43.2 About PanelThe About panel displays copyright information for the Cirrus Seismic Evaluation software.Click OK to exit this panel

CDB5378DS639DB4 393.3 Setup PanelThe Setup panel initializes the evaluation system to perform data acquisition. It consists of the followingsub-panels

CDB53784 DS639DB43.4.3 Plot Enable ... 473.4.4

CDB537840 DS639DB43.3.1 USB PortThe USB Port sub-panel sets up the USB communication interface between the PC and the target board.Control Description

CDB5378DS639DB4 413.3.2 Digital FilterThe Digital Filter sub-panel sets up the digital filter configuration options.By default the Digital Filter sub-

CDB537842 DS639DB43.3.3 Analog Front EndThe Analog Front End sub-panel configures the amplifier, modulator and test DAC pin options. Pin op-tions are

CDB5378DS639DB4 433.3.4 Test Bit StreamThe Test Bit Stream sub-panel configures test bit stream (TBS) generator parameters. The digitial filterdata sh

CDB537844 DS639DB43.3.5 Gain / OffsetThe Gain / Offset sub-panel controls the digital filter GAIN and OFFSET registers.The OFFSET and GAIN registers c

CDB5378DS639DB4 453.3.6 Data CaptureThe Data Capture sub-panel collects samples from the target board and sets analysis parameters.When the Capture bu

CDB537846 DS639DB43.3.7 External MacrosMacros are generated within the Macros sub-panel on the Control panel. Once a macro has been builtit can either

CDB5378DS639DB4 473.4 Analysis PanelThe Analysis panel is used to display the analysis results on collected data. It consists of the followingcontrols

CDB537848 DS639DB43.4.1 Test SelectThe Test Select control sets the type of analysis to be run on the collected data set.Control DescriptionTime Domai

CDB5378DS639DB4 493.4.2 StatisticsThe Statistics control displays calculated statistics for the analysis. Errors that affect statistical calcula-tions

CDB5378DS639DB4 5LIST OF FIGURESFigure 1. CDB5378 Block Diagram...

CDB537850 DS639DB43.4.5 ZoomThe ZOOM function allows an area on the graph to be expanded.To use the zoom function, click the ZOOM button and select th

CDB5378DS639DB4 513.5 Control PanelThe Control panel is used to write and read register settings and to send commands to the digital filter.It consist

CDB537852 DS639DB43.5.1 DF RegistersThe DF Registers sub-panel writes and reads registers within the digital filter. Digital filter registers con-trol

CDB5378DS639DB4 533.5.4 MacrosThe Macros sub-panel is designed to write a large number of registers with a single command. This al-lows the target eva

CDB537854 DS639DB43.5.6 CustomizeThe Customize sub-panel sends commands to upload custom FIR and IIR filter coefficients, start the dig-ital filter, s

CDB5378DS639DB4 554. BILL OF MATERIALS CIRRUS LOGICCDB5378_Rev_C1.bomBILL OF MATERIAL (Page 1 of 3)Item Cirrus P/N RevDescription QtyReference Designa

CDB537856 DS639DB4CIRRUS LOGICCDB5378_Rev_C1.bomBILL OF MATERIAL (Page 2 of 3)Item Cirrus P/N Rev Description Qty Reference Designator MFG MFG P/N Not

CDB5378DS639DB4 57CIRRUS LOGICCDB5378_Rev_C1.bomBILL OF MATERIAL (Page 3 of 3)Item Cirrus P/N Rev Description Qty Reference Designator MFG MFG P/N Not

CDB537858 DS639DB45. LAYER PLOTS

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CDB53786 DS639DB4LIST OF TABLESTable 1. Analog Input Default Jumper Settings...

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CDB537864 DS639DB46. SCHEMATICS

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CDB5378DS639DB4 71. INITIAL SETUP1.1 Kit ContentsThe CDB5378 evaluation kit includes:• CDB5378 Evaluation Board• USB Cable (A to B)• Software Download

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CDB537874 DS639DB47. REVISION HISTORYRevision Date ChangesDB1 FEB 2006 Initial Release.DB2 APR 2006 Minor correction.DB3 AUG 2006 Corrected PDF printi

CDB53788 DS639DB41.2.1 Default Jumper Settings J27Analog Input SelectionsDAC_OUT+ 1 **2INA+DAC_OUT- 3 **4INA-DAC_OUT- 5 ---------- 6INB-DAC_OUT+ 7 -

CDB5378DS639DB4 9 J11VA+ Voltage Selection+2.5VA 1 ---------- 2+5VA 3 **4EXT_VA+ 5 **6 J12VD Input Voltage SourceEXT_VA+ 1 **2EXT_VD 3 ---------- 4J