Evaluation Board CS4811 Evaluation Description CDB4811

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Evaluation Board CS4811 Evaluation Description CDB4811

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CDB4811
Evaluation Board CS4811
Evaluation
Description
CDB4811 stand-alone demonstration platform CS4811 multi-effects processor system-on-achip. board designed showcase musical effects processing applications including spring reverb, digital reverb, delay, chorus, flange, tremolo effects. There different versions CDB4811 board, each with code optimized specific applications. Contact your local Cirrus Logic sales representative find about latest versions offered. ORDERING INFORMATION CDB4811GTR Guitar Effects Evaluation CDB4811MXR Mixer Effects Evaluation
Platform CS4811 Fixed Function Multi-Effects Processor Stand-Alone Operation, Boots from Serial EEPROM Selection Different Presets On-Board Hardware Wet/Dry Control User Adjustable Input Output Level
Mute Control
Rotary Preset Selection Switches Input Level Control
GPIO
8.192 Timing Crystal
Serial EEPROM
Serial EEPROM
Output Level Control
Clock Generator Core Prog Data
Serial Port 24-bit
Analog Audio Output
Analog Audio Input
24-bit
CS4811
Hardware Wet/Dry Control
Preliminary Product Information
P.O. 17847, Austin, Texas 78760 (512) 7222 FAX: (512) 7581 http://www.cirrus.com
This document contains information product. Cirrus Logic reserves right modify this product without notice.
Copyright Cirrus Logic, Inc. 2000 (All Rights Reserved)
DS486DB2
CDB4811
TABLE CONTENTS
CDB4811 SYSTEM OVERVIEW CS4811 AUDIO PROCESSOR ANALOG INPUT ANALOG OUTPUT CONTROL POWER SUPPLY LAYOUT
LIST FIGURES
Figure Schematic Diagram Figure Bill Materials Figure Silkscreen Pads. Figure Layer Figure Bottom Layer
Contacting Cirrus Logic Support
complete listing Direct Sales, Distributor, Sales Representative contacts, visit Cirrus Logic site
Preliminary product information describes products which production, which full characterization data available. Advance product information describes products which development subject development changes. Cirrus Logic, Inc. made best efforts ensure that information contained this document accurate reliable. However, information subject change without notice provided without warranty kind (express implied). responsibility assumed Cirrus Logic, Inc. this information, infringements patents other rights third parties. This document property Cirrus Logic, Inc. implies license under patents, copyrights, trademarks, trade secrets. part this publication copied, reproduced, stored retrieval system, transmitted, form means (electronic, mechanical, photographic, otherwise) without prior written consent Cirrus Logic, Inc. Items from Cirrus Logic website disk printed user. However, part printout electronic files copied, reproduced, stored retrieval system, transmitted, form means (electronic, mechanical, photographic, otherwise) without prior written consent Cirrus Logic, Inc.Furthermore, part this publication used basis manufacture sale items without prior written consent Cirrus Logic, Inc. names products Cirrus Logic, Inc. other vendors suppliers appearing this document trademarks service marks their respective owners which registered some jurisdictions. list Cirrus Logic, Inc. trademarks service marks found http://www.cirrus.com.
DS486DB2
CDB4811
CDB4811 SYSTEM OVERVIEW
CDB4811 complete, stand-alone digital signal processing (DSP) system based CS4811 fixed function multi-effects audio processor. CS4811 contains on-chip analog-todigital converter (ADC), digital to-analog-converter (DAC), proprietary 24-bit audio processing core with large amount on-chip RAM. CS4811's functionality (changing effects) controlled during runtime rotary switch, allowing different presets selected. hardware control allows ratio processed input signal adjusted. user also level analog input output optimize interface with external audio equipment.
ANALOG OUTPUT
processed output signal mixed with amplified input signal with potentiometer (MIX). Turning clockwise increases amount processed (wet) signal that appears output. mixed output then buffered with output stage that variable gain adjusted 12-turn potentiometer (GAIN TRIM). Turning GAIN TRIM clockwise increases output gain. best signal-to-noise ratio obtained when full scale output CDB4811 matches full scale (non-clipped) amplitude capabilities downstream circuitry (ideally 1.77 RMS). signal-to-noise ratio will decrease when gain output buffer greater than one. differential analog output from CS4811 buffered with 2-pole active butterworth filter U2A, kHz, 0.83 V/V. purpose filter convert output single ended prior mixing, attenuate out-of-band noise generated DAC, limit signal swing p-p. acts shunt attenuate loud pops that occur during power up/down. controlled digital output CS4811 that asserted power-up de-asserted after booted.
CS4811 AUDIO PROCESSOR
processor capable self-loading program from external serial EEPROM memory power-up through control port. this application control port uses format. Since CS4811 based, configured different signal processing applications storing different Crystal supplied application code module into external memory.
ANALOG INPUT
analog input on-chip (J1) single ended, with adjustable voltage gain Adjusting 12-turn INPUT ATTEN potentiometer clockwise will increase input gain. best signal-to-noise performance input gain should increased until just before audible clipping encountered with maximum level input signal. Substantial input clipping indicated when (CLIP). full scale input (driven single ended) 1.77V pp). input signal anti-aliased with passive filter, kHz, shown schematic diagram Figure input protected against overvoltage diodes
CONTROL
Rotary switch used control various aspects CS4811 code functionality such selecting different musical effects presets. Moving switch position sets that position zero (low). Header JP2, FOOTSWITCH, provided connect external switch system. header connected parallel with switch pull-up attached round FOOTSWITCH header, other connected ground. FOOTSWITCH input, connect external SPST switch between ter-
DS486DB2
CDB4811
minals JP2, place switch position. Please CS4811 firmware code application documents details specific functions which assigned switch. functionality discussed application document then supported.
LAYOUT
reference filter capacitor must kept close practical device, CMFILT+ signal trace (pin CMFILT- ground return trace (pin should side board short possible. Keep other traces away from this node, noise coupled into CMFILT+ will appear outputs with little attenuation. board environment noisy, capacitor should added parallel with help eliminate noise coupling. Mount 0.047 surface mount power supply decoupling capacitors close device possible. Again, keep traces these capacitors device supply pins ground pins side board short practical. anti-aliasing filter capacitor should mounted close device practical. shorting capacitor should also close device. digital traces should kept away from analog input output sections board. ground fill used both bottom layers minimize noise coupling ground trace impedance. Separate analog digital grounds needed should used. layout board appears Figures
POWER SUPPLY
Power attached board through power connector positive center contact. unregulated VDC, wall transformer supplied with board. on-board voltage regulator supplies mA@5 system from input. external power resistor used limit input voltage board applications where supply available. applications where available, regulator removed shorting jumper installed R27. this modification done, care must then taken plug transformer into board CS4811 damaged.
DS486DB2
39pf
25LC640CSN
HEADER
Program
3.3k
3.3k
OPA2340UA
CMOU
MN13821 PIO0 PIO1 PIO2 PIO3 MRESETn CLIP 3.3k 47nf
CDOUT CCLK CDIN 3.3k SCPM/nS
SDA/CDOUT SCLK/CCLK AD1/CDIN AD0/nCS nREQ DBCLK DBDA I2C/nSPI SCPM/nS nRST PIO0 PIO1 PIO2 PIO3 NC61 NC60 NC59 NC58 NC57 NC56 NC55 NC54 NC38 NC37 DGND1 DGND2 DGND3 DGND4 NC10 NC11 NC12 NC13 NC14 NC15 NC16 NC17 NC18 CS4811
AINL+ AINL90 NC50 NC49 CMOUT AOUT1+ AOUT1NC48 NC47 NC46 NC45 NC44 NC43 NC42 NC41 NC40 NC39 NC53 NC52 NC51 CMFILT+ CMFILTXTI CLKOUT AGND1 AGND2 AGND3 AGND4 NC36 NC35 NC34 NC33 NC32 NC31 NC30 NC29 NC28 NC27 NC26 NC25 NC24 NC23 NC22 NC21 NC20 NC19
1uf/50 39pf POT20k/ OPA2340UA PHONO JACK 100k OPA2340UA 47nf 39pf 47nf 47nf 47nf 10uf/25 3.3k MMBT 3904 MMBT 3906 47nf
3.3k
HEADER
8.192
Footswitch
PIO3 10uf/25
10uf/25
47nf
47nf
47nf
CLIP
CMOU
OPA2340UA
47nf PWRJACK 47nf NJM78M05FA VOUT Bead 47nf T0220 deg/W
PIO1 PIO2 PIO0
SWITCH, ROTARY
Figure Schematic Diagram
DS486DB2
270k 47nf nHOLD CDOUT CDIN CCLK POT500k/ INPUT ATTEN SCPM/nS 1N4148 1N4148 1uf/50 100k PHONO JACK POT20k/1 GAIN TRIM 10uf/25 10uf/25 MMBT 3906 10uf/25
CDB4811
CS4811 REVERB DEMO Revised: Tuesday, 2000 CDB4811 Revision: Cirrus Logic 4210 Industrial Austin, 78744 Bill Materials Item 10,2000 11:27:21 Value 47nf PANASONIC Part Number ECU-V1H473KBW Description CAP, CERAMIC, 47NF, 50V, 10%, X7R, 1206 Footprint CSN_1206 Notes Quantity Reference C1,C11,C14,C15,C16,C19, C20,C23,C24,C25,C26,C27, C2,C6,C7,C13 C3,C10,C12 C4,C8,C17,C18,C21,C22 C9,C5 D1,D2 J1,J2 Q3,Q1 R4,R5,R8,R12,R19,R26 R6,R9,R10,R15,R16,R17, R18,R21,R23,R24,R25 R13,R7 R14,R22 U5,U2 39pf 10uf/25 1uf/50 1N4148 HEADER HEADER PHONO JACK PWRJACK Bead MMBT3906 MMBT3904 270k 3.3k PANASONIC ECU-V1H102JCH PANASONIC ECU-V1H390JCM PANASONIC ECE-V1EA100SR PANASONIC ECE-V1HA010SR VISHAY LL4148DIC CHICAGO ACMD28-21SRC/TR8/T1 ELECT ARJ2018 STACK PJ202A PANASONIC EXC-ML45A910U MOTOROLA MMBT3906LT1 MOTOROLA MMBT3904LT1 PANASONIC ERJ-8GEYJ274 PANASONIC ERJ-8GEYJ331 PANASONIC ERJ-8GEYJ473 PANASONIC ERJ-8GEYJ332 PANASONIC ERJ-8GEYJ103 ERJ-8GEYJ104 ERJ-8GEYJ102 ERJ-8GEYJ123 ERJ-8GEYJ000 94HA08W 25LC640CSN OPA2340UA CS4811CM MN13821T NJ78M05FA 3266W-504 3266W-203 3352H-203 XT49S-20 8.192M CAP, CERAMIC, 1NF, 100V, NPO, 1206 CAP, CERAMIC, 39PF, 100V, NPO, 1206 CAP, ELECT, 10UF, 25V, 10%, CAP, ELECT, 1UF, 50V, 10%, DIODE, SWITCHING, MELF, SOD-80 DIODE, LED, RED, 1MA, HEADER, MALE, 5X2SM HEADER, PIN, CENTER PHONO JACK, GOLD JACK, POWER, PWB, FERRITE BEAD, 1812 BJT, PNP, GENERAL PURPOSE, SOT23 BJT, NPN, GENERAL PURPOSE, RES, THICK FILM, 270K, 1/8W, 1206 RES, THICK FILM, 330, 1/8W, 1206 RES, THICK FILM, 47K, 1/8W, 1206 RES, THICK FILM, 3.3K, 1/8W, 1206 RES, THICK FILM, 10K, 1/8W, 1206 CSN_1206 CSN_1206 CSP_ELEC_208SQ CSP_ELEC_170SQ SOD-80 LED_CMD28-21 HDR5X2SM HDR2X1 CON_RCA_RA CON_PJ-202A IND_1812 SOT23 SOT23 RES_1206 RES_1206 RES_1206 RES_1206 RES_1206 100k PANASONIC PANASONIC PANASONIC PANASONIC SWITCH, ROTARY GRAYHILL 25LC640CSN MICROCHIP OPA2340UA BURRBROWN CS4811 CRYSTAL MN13821T PANASONIC NJM78M05FA POT500k/10T BOURNS POT20k/10T BOURNS POT20k/1T BOURNS 8.192 VISHAY RES, THICK FILM, 100K, 1/8W, 1206 RES_1206 RES, THICK FILM, 1/8W, 1206 RES_1206 RES, THICK FILM, 12K, 1/8W, 1206 RES_1206 RES, THICK FILM, 1/8W, 1206 RES_1206 SWITCH, DIP, ROTARY, OCTAL, SW-DIPROT4_SM EEPROM, SERIAL, SPI, 64KBIT, SO8-150 OPAMP, DUAL, SO8-150 DSP/CODEC, MONO, 100MQFP QFP100_14X20 VOLTAGE DETECTOR, 4.4-4.7V, SC59A SC59A VOLTAGE REGULATOR, TO220 TO-220AB POTENTIOMETER, 500K, LIN, 10TURN, TOPADJ, POT-BRNS-3266W POTENTIOMETER, 20K, LIN, 10TURN, TOPADJ, POT-BRNS-3266W POTENTIOMETER, 20K, LIN, 1TURN, TOPADJ, POT-BRNS-3352H CRYSTAL, PARALLEL CUT, 8.192MHZ, 20PF, HC49S XTL_HC49S Wall Transformer, 9VDC, 500mA, unregulated, 2.1mm threaded standoff, Nylon, 4-40 0.375" machine screw, head, Nylon, 4-40 0.375" knob, gray with black arrow STACK DPD090050-P-5 Keystone 4801K-ND H544-ND Building Fasten Grayhill 947706-005
CDB4811
INSTALL
DS486DB2
Figure Bill Materials
CDB4811
Figure Silkscreen Pads
DS486DB2
CDB4811
Figure Layer
DS486DB2
CDB4811
Figure Bottom Layer
DS486DB2

Evaluation Board CS4811 Evaluation Description CDB4811

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