Cirrus-logic EV2 Manuale Utente Pagina 1

©Copyright 2005 Cirrus Logic, Inc. SEP 2005EV-2MAN21http://www.cirrus.comCobraNet™ EV-2Digital Audio Networking ProcessorCobraNet EV-2 Development Sy

Rev. 2.1 10CobraNet™ EV-2• Select the appropriate PC serial port. The software will attempt to make contact with the EV-2.• Once communication is esta

CobraNet™ EV-211 Rev. 2.1Detailed Description of EV-2 ComponentsThe MicrocontrollerThe microcontroller on the EV-2 is a Philips Semiconductor P89C51RD

Rev. 2.1 12CobraNet™ EV-2Microcontroller Port Connections:Port 0: used for the address/data (AD) bus. Once configured, the FPGA latches the loweraddre

CobraNet™ EV-213 Rev. 2.1Port 3: See Table 5 on page 13.Interfacing the Microcontroller to the CMPlease refer to the EV-2 schematic, found in Appendix

Rev. 2.1 14CobraNet™ EV-2In the EV-2 application, the host address lines are generated by the address latch in theFPGA (see Table 6 on page 16) and th

CobraNet™ EV-215 Rev. 2.1Interfacing Serial Audio to the CMIn general, interfacing to most off-the-shelf A/D and D/A converters is straightforward and

Rev. 2.1 16CobraNet™ EV-2Memory LocationR/W Description0x8000 W Bit register for green LED, CR903. 0=LED on, 1=LED off. Refer to Table 10 on page 20 f

CobraNet™ EV-217 Rev. 2.1Note 1: The FPGA only decodes this address. The actual register is located on the CM. See theMotorola DSP56303 users manual o

Rev. 2.1 18CobraNet™ EV-2Configuring the FPGAThe FPGA is configured from data that is stored in the upper 16kbytes (0xC000-0xFFFF) ofthe microcontroll

CobraNet™ EV-219 Rev. 2.1Sine Wave GeneratorThe FPGA contains a 32-sample, 24-bit, sine table. The table is stepped through at the sample clock rate s

CobraNet™ EV-22 Rev. 2.1Contacting Cirrus Logic Support For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find

Rev. 2.1 20CobraNet™ EV-2LED ControlThere are two bit registers to control the state of each of three LEDs. The mapping of control bits to LED behavio

CobraNet™ EV-221 Rev. 2.1Hex SwitchesFour pins on the 8051 allow the hex switches to be read. The EV-2 circuitry associated with thehex switches serve

Rev. 2.1 22CobraNet™ EV-2EV-2 Schematics, Page-by-Page DescriptionThe following sections provide detailed descriptions of the EV-2 schematic drawings

CobraNet™ EV-223 Rev. 2.1Appendix A: Definition of TermsThis Appendix contains brief definitions of many of the terms used in the discussion of CobraN

Rev. 2.1 24CobraNet™ EV-2EthernetA Local Area Network (LAN) technology that allows transmission of information betweencomputers. Ethernet is, by far,

CobraNet™ EV-225 Rev. 2.1valid network connection or data may be corrupted. Longer distances can be achieved byupgrading the media or using multiple r

Rev. 2.1 26CobraNet™ EV-2Appendix B: EV-2 SpecificationsA/D: Cirrus Logic CS5381AUDIO SPECIFICATIONS:• Two input channels.• Frequency Response (-1 dB

CobraNet™ EV-227 Rev. 2.1D/A: Cirrus Logic CS4398AUDIO SPECIFICATIONS:• Two output channels.• Frequency Response (-1 dB from a full-scale 1 kHz sine w

Rev. 2.1 28CobraNet™ EV-2Appendix C: Other ResourcesA comprehensive array of CobraNet information can be accessed at the Cirrus Logic publicwebsite.

CobraNet™ EV-229 Rev. 2.11 2 34ABCD4321DCBACobraNet (TM) Evaluation BoardE2500 55th StreetSuite 210Title:File: EV2_Main.Sch1919-Oct-2004Date: Sheet of

Rev. 2.1 3CobraNet™ EV-2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Getting

Rev. 2.1 30CobraNet™ EV-21 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - MPC, SRAM and Hex SwitchesE2500 55th StreetSuite 210Title:File: EV2_8051.S

CobraNet™ EV-231 Rev. 2.11 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - ADCE2500 55th StreetSuite 210Title:File: EV2_AD.Sch3919-Oct-2004Date: She

Rev. 2.1 32CobraNet™ EV-21 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - DACE2500 55th StreetSuite 210Title:File: EV2_DA.Sch4919-Oct-2004Date: She

CobraNet™ EV-233 Rev. 2.11 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - CM & serial I/O, and reset circuit.E2500 55th StreetSuite 210Title:Fi

Rev. 2.1 34CobraNet™ EV-21 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - Optional VCXO and clock buffers.E2500 55th StreetSuite 210Title:File: EV2_

CobraNet™ EV-235 Rev. 2.11 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - AES TransceiverE2500 55th StreetSuite 210Title:File: EV2_AES.Sch7919-Oct-

Rev. 2.1 36CobraNet™ EV-21 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - PowerE2500 55th StreetSuite 210Title:File: EV2_pwr.sch8919-Oct-2004Date:

CobraNet™ EV-237 Rev. 2.11 2 34ABCD4321DCBACobraNet (TM) Evaluation Board - FPGAE2500 55th StreetSuite 210Title:File: EV2_FPGA.Sch9919-Oct-2004Date:

Rev. 2.1 38CobraNet™ EV-2Appendix E: EV-2 Command Line Interface.The EV-2 supports a simple command line interface (CLI). This interface allows the us

CobraNet™ EV-239 Rev. 2.1Poke <target> <value> [offset]This command will set the value of the given location in CobraNet memory space to &

Rev. 2.1 4CobraNet™ EV-2IntroductionThe EV-2 provides a means of evaluating the CM-1 or CM-2 CobraNet™ Modules and the CirrusLogic CobraNet Silicon Se

Rev. 2.1 40CobraNet™ EV-2There are a number of commands that control the state of the EV-2 board. Some of these commands should prove useful to the us

CobraNet™ EV-241 Rev. 2.1Example: led green toggle.This will change the state of the green LED. If it was on it will be off. If the LED was in blink m

Rev. 2.1 42CobraNet™ EV-2TestEV <what>This is used for manufacturing tests of the EV-2 and in general only the ‘resetcn’ will be useful to the u

CobraNet™ EV-243 Rev. 2.1Read <register>This command reads the raw value of the host register. Note that the architecture is significantly diffe

Contacting Cirrus Logic, Inc.For further information on CobraNet™ products, contact: the Commercial Audio Products Division of Cirrus Logic, Inc.2500

CobraNet™ EV-25 Rev. 2.1• Routing flexibility: Route from any audio source to any audio sink using the supplied EV-2 software. Route to and from the C

Rev. 2.1 6CobraNet™ EV-2Getting StartedRequired MaterialsIncluded:The CobraNet EV-2 Development Package ships with the following materials:• EV-2 modu

CobraNet™ EV-27 Rev. 2.1• CR300, when on, indicates an overflow condition detected on the A/D converter. • The units are now ready to pass audio. The

Rev. 2.1 8CobraNet™ EV-2Switch and Connector FunctionalityJ300Audio Input Connector: Phoenix-style connector for two-channel balanced audio input,+14.

CobraNet™ EV-29 Rev. 2.1SW200Programming switch: The EV-2 microcontroller can be programmed via its serial port,connector P501. The supplied software