AT76C651 Evaluation Kit - User Manual
Contents
1. Signal Reference Pin Name Function Level 1 TDO 3 3V 2 TRST 3 3V Ua 3 TCK JTAG i e IEEE 1149 1 3 3V JTAG E 4 TMS 3 3V 5 TDI 3 3V 1 gt SDA_N IC DATA from AT76C651 to PC 5 0V TES 2 SDAN fC DATA from PC to AT76C651 5 0V PC IFC TEST 3 SCL N IC CLOCK from PC to AT76C651 5 0V 4 GND GND OV 1 REF2CLK 3 3V IPA 2 PHASYM Test Pins 3 3V TEST 3 ENSYM 3 3V 1 CTRLO PC Bit 0 for AT76C651 PLL Control inverted 5 0V TP um 2 CTRL1 PC Bit 1 for AT76C651 PLL Control inverted 5 0V 3 RESET PC Hardware Reset inverted active high 5 0V Table 7 LED Indicators PCB Reference Name Function Origin CR1 OR ADC Analog Input level Out of From AD9051BRS Device if Range used CR2 CORBYTE Corrected Byte Indicator From AT76C651 Device CR3 CORFAIL RS Packet not Corrected From AT76C651 Device CR4 LOCK2 Maskable Lock Signal 2 From AT76C651 Device CR5 LOCK1 Maskable Lock Signal 1 From AT76C651 Device CR6 RESET Reset of the AT76C651 Device Push Button or Software via PC Connector AIMEL MEM AT76C651 Evaluation Kit User Manual 2 6 2 6 1 2 6 2 AT76C651 Evaluation Kit User Manual Board Configuration Setting Up the EBC651 Evaluation Board The cells shaded gray in the following table indicate the default configuration on the EBC651 evaluation board Other configurations are available by modifying resistances as shown in Table2. 2 4 5 Timing Waveforms DVALID D 0 7 FSTART FVALID 16 bytes 188 bytes a net Table 5 General purpose Connectors Signal Reference Pin Name Function Level 1 IRQ Interrupt Request Generated by AT76C651 3 3V TP2 2 PIDO PID Filtering Indicator Bit 0 3 3V FLAG 3 PID1 PID Filtering Indicator Bit 1 3 3V 4 CLKO Auxiliary Clock for tuner or other specific usage 3 3V 1 T_SDA IC Bus Data Line SDA between Tuner and 5 0V AT76C651 bi directional TP5 2 T SCL IC Bus Clock SCL from AT76C651 to Tuner 5 0V 12C 3 SDA SDA Line of I C Bus bi directional 5 0V 4 SCL SCL line of IC Bus 5 0V 5 GND GND 1 GND GND 2 FVALID FRAMVALID Valid MPEG2 TS Frame in mode 3 3V 3 FSTART FRAMSTART Start of MPEG2 TS Frame 3 3V 4 DVALID DATAVALID MPEG2 TS Byte Output Enable 3 3V active low ape 5 D7 MSB MPEG2 Sie DATA 7 D5 8 D4 DATAOUT MPEG2 TS Parallel Byte 3 3V 9 D3 10 D2 11 D1 12 DO LSB AT76C651 Evaluation Kit User Manual AIMEL 2 5 Setting Up the EBC651 Evaluation Board 2 6 Table 5 General purpose Connectors Continued Signal Reference Pin Name Function Level 1 CORBYTE Oorrected Byte Indicator 3 3V TP8 2 CORFAIL RS Packet Not Corrected 3 3V FAULT 3 LOCK2 Maskable Lock Signal 2 configured by software 3 3V 4 LOCK1 Maskable Lock Signal 1 configured by software 3 3V Table 6 Specific purpose Connectors
3. ADCLK TI2C SDA TI2C SCL AGC TESTADC 1 ADC ext 0 test QBBI TEST SWITCH QBBO CSTPWM VDD l i K TUNER CATV SAW Filter R ADC gt AIN NS D 9 0 gt NS AINB CLK Ead g 8 3 E g ial 7 Rit RIS lt gt o te x p NS ROG BOARD POWER CONFIGURATION Reg gt VDD EXT 3 3V external VDD 45V Reg 9 VDD3 Optional 3 3V digit AGC Amp L gt VDDS sv PC reset a 35V VGG 35V i 12V VEE 12V 3 z i a ay Ie eee IS LOCK1 a gt Re BH m wd 8S 82 2 3 B rco z Joena E 3 IEEE 1149 1 cn dm CORE gt B JTAG PINOUT TEST OUTPUTS 5 CORBYTE gt sa 3 zc ST Al 76C651 DATAOUT 7 0 I gt 2 m i DATAVALID gt E z QAM DEMODULATOR L L Js FRMVALID gt gt S 3 vcc d A t 1 K MEN RO DCSDA fe 1 be EE z7 ncesc e 22 Bg R37 gU gU P AT76C651 POWER CONNECTIONS PLLCTRLO a a VDD VDD3 3 3V PLLCTRLI I TG w DCVDD VDDS 45 0V 11 S x PC reset Lo GND GND Ground Power
4. see 3 6 93 3 8 AGC1 Control Window Seana ana aa aSa Na a iasa 3 8 3 3 4 Timing Recovery Configuration Window ssseseess 3 9 AIMEL Table of Contents 3 3 5 Carrier Recovery Configuration Window sssesss 3 10 3 3 6 AGC2 Configuration Window sese 3 10 3 3 7 Equalizer Window inna een praed 3 11 3 3 8 Forward Error Correction Window ssse 3 12 3 3 9 PiD ilterinig WIDdOW tine E e een ret 3 13 3 b VIEW M OnU iui eR ecd iL 3 13 Section 4 Appendix Glossary and Schematics esueusesess 4 1 4 1 ADDreVIGtiORis jae onde rii tate hath tan beaded eite Eee pens 4 1 42 Schemalics cec e ed p a ges ei pesi vena 4 2 AIMEL AIMEL 1 1 Scope 1 2 Deliverables 1 3 System Requirements Section 1 Introduction The AT76C651 Evaluation Kit is designed to show the performance of the AT76C651 DVB DAVIC QAM Demodulator and to give an example of its implementation The prin cipal application is the digital demodulation of QAM signals used for digital TV over cable networks The AT76C651 device can also be used in a number of other applica tions e g MMDS radio transmission satellite transmission This manual is structured as follows 1 Section 1 provides an overview 2 Section 2 contains set up information for the evaluation board 3 Section 3 describes the software in
5. 3 16 AIMEL AT76C651 Evaluation Kit User Manual AIMEL 4 1 Abbreviations Section 4 Appendix Glossary and Schematics The following abbreviations are used in this document ADC Analog to Digital Converter AGC Automatic Gain Control CATV Cable Television DVB Digital Video Broadcasting EMC Electromagnetic Compatibility ESD Electromagnetic Discharge ETS European Telecommunication Standards FEC Forward Error Correction IF Intermediate Frequency PC Standard C bus described by The I C bus and how to use it Philips Semiconductor April 1995 IRQ Interrupt Request ITU T International Transmission Union Telecommunication MPEG Moving Picture Expert Group PID Program Identifier of MPEG2 frame PLL Phase Locked Loop PWM Pulse Width Modulation QAM Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying RF Radio Frequency RS Reed Solomon to Correct DATA on MPEG2 frame SAW Surface Acoustic Wave filters type TS Transport Stream XO Crystal Oscillator unit XTAL Crystal unit AT76C651 Evaluation Kit User Manual Appendix Glossary and Schematics 4 2 Schematics TPI JTAG TP2 Figure 4 1 EBC651 Evaluation Board Schematic TP4 TEST Lied PS ADi etd o3 NYS pert Ps 0 i He RIS SMPLPHASE
6. European version DAT7021 55 25 MHz lt RF lt 801 25 MHz Note Itis generally recommended to switch off the tuner I2C bus as soon as the tuner frequency is configured in order to reduce the phase noise introduced by the tuner see AT76C651 datasheet Literature Number 1293 m BOARD PARAMETERS Indicate parameter values configured on the board Quartz or XO frequency Enter the value of the component F 4 IC Reference Frequency Enter value of n in the following formula see Table 9 n Bapt 2X Fxral Table 9 DVB Application using a Quartz 32 taps Equalizer Reference Board BW IF Tuner Fytat 7 Fsamp DDS Frequency n Frequency D mpoi MAX USA 6 MHz 44 MHz 25 MHz 2x25 44 6 MHz n 4 2x25 50 MHz 50 8 6 25 Mbaud EUROPE 8 MHz 36 MHz 28 9 MHz 36 28 9 7 1 MHz n 4 2x28 9 57 8MHz 57 8 8 7 225 Mbaud 3 3 2 Output Mode Figure 3 5 Output Mode Configuration Window Configuration Window Output Mode Configuration e ecce o mimm m m m ea a M M M LI E a il 4 3 6 AIMEL AT76C651 Evaluation Kit User Manual Software Installation This window allows the configuration of AT76C651 output pin m OUTPUT MODE Select format and type of the Data Output m LOCK 1 and LOCK 2 MASK Select one or more lock signals for MASKLOCK output pin FEC Forward Error Correction Carrier Recovery Equalizer Recovery Timing Recovery Symbol Rate Recovery AGC2 AGC1 PLL m TUN
7. 1 Imag adapted Real 1 Imag 0 Equalizer Adaptation Step 3 min 0 max 7 Central Tap Position 7 min 0 max 7 Reload from IC C C C e m Equalizer Inhibition Make the Equalizer transparent m Freeze Equalizer Freeze the coefficients in the Equalizer Filter m Equalizer 16 taps only Select 16 taps equalizer enable Symbol Rate lt Fgep 4 else equalizer will have 32 taps m Equalizer Structure LE Linear Equalizer mandatory if 16 taps equalizer is chosen DFE Decision Feedback Equalizer with central tap between O 7 or 8 15 m Central Tap Adaptation Mode This parameter enables or inhibits the adaptation of the equalizer central tap It controls both the real part and the imaginary part m Equalizer Adaptation Step The adaptation speed of the equalizer is proportional to this parameter A small value slows the adaptation of the equalizer taps and reduces the noise influence on the equalizer transfer function m Central Tap Position 0 15 for 16 taps LE structure 0 31 for 32 taps LE structure 0 7 or 8 15 for DFE structure AT76C651 Evaluation Kit User Manual AIMEL 3 11 Software Installation 3 3 8 Forward Error Figure 3 11 Forward Error Correction Window Correction Window Forward Error Correction FEC Configuration ETE Ej 2 EN 12 Li Li E Ej E Ej E This window allows the configuration of FEC Parameters These parameters are automatically
8. X VIB Phase Noise 471 dBc 86 3 dBc Hz at 10 kHz Tuner RF RF Frequency 100 MHz AGC1 Lock O 20 TunerOn AGC2 Lock L m LOCK 1 O Timing Lock O ATTECEBI Carrier Lock ence A MEL Sr ver Equalizer Lock vai 40 t a Board Software FEC Lock O Q Inverte I2C using LPT1 Rem Ready NUM Vi m MONITORING indicates data registers read on chip BER1 Indicates a BER estimate over the last 10E8 bits BER2 Indicates an alternate BER estimate only informative for highly degraded signal NPERR Indicates the number of uncorrected frames on the last 108 bits AGC1 Output level for AGC pin value in percent between max and min AGC values AGC2 Value of AGC2 indicated in dB Timing Offset Offset on Symbol Rate recovered Frequency Offset Offset on Intermediate Frequency recovered C N Carrier to Noise Ratio estimation Phase Noise Indicates Phase Noise in dBc integrated in the signal BandWidth Indicates estimated Phase Noise at 10 kHz offset from the carrier XXX Lock A point appears when signal is activated 1 Q Inverted Indicates whether or not and Q channels are inverted m GENERAL CONFIGURATION indicates configuration of main registers Modulation Type Symbol Rate DDS Downconverting Frequency Coherent Modulation Visible only if QPSK modulation is selected m TUNER RF indicates tuner data registers RF Frequency Input 3 2 AIMEL AT76C651 Evaluation Kit User Manual Software Installation I C
9. d PLLCTRL2 2 I2CADDRO DCADDRI XO TEST MODE OSCMODE O XTAL xO VDD_EXT AIMEL AT76C651 Evaluation Kit User Manual Appendix Glossary and Schematics Figure 4 2 EBC651 Evaluation Board Top View T_SDA AT76C651 r3 dd T_SCL DUB DAVIC Mo I SDA gam DEMODULATOR i i i SCL GND j TDO TRST TCK TMS TDI com R20 I Li K1C56 HX10 JTAG TP1 ci2 ra f da5 o NW czem das da 100 mm IRG PIDO PID1 CLKO DO Di D2 D3 D4 DS D6 D7 DVALID FSTART FURLID COPYRIGHT C ATMEL CORPORATION 1999 GND j DATA OUTPUT me R8 c13 E TP4 TEST REF 2CLK PHASYM ENSYM AT76C651 C25 maC26 CTRL _PC T CTRL1_PC RESET_PC o ApLocki amp as 3 LOCK2 CORFAIL gt SDA_N CORBYTE lt SDA_N lt SCL_N MPEG2 DATA TP PC CONTROL GND R62 Dice s cR Kacn3 cre a CORBYTE CORFAIL Note This drawing is not to scale 4 3 AIMEL AT76C651 Evaluation Kit User Manual Appendix Glossary and Schematics Figure 4 3 EBC651 Evaluation Board Bottom View C303 MXB E RIO R11 ips R37 R38 R27 R30 m R29 R5110 EER28 R3313 EARS MX R46 Lu a ix C42 I R75 M ae C62 X12 C49 pg R43 Lj De Q
10. 8 Table 8 Pin Description Table Signal Name Designation Logic Configuration IC address bit O 1 R48 09 R50 Bd Selection of AT76C651 NC 12 i A a MM R48 NC R50 00 IC address bit 1 1 R34 0Q2 R49 NC d Selection of AT76C651 IC address bit 1 I C address bit 1 0 R34 2 NC R49 00 A PLLCTRL Su SE Selection by PC CONTROL R10 00 0 PLLCTRLO 0 R10 NC R37 0Q B AT76C651 PLL control B PLLCTRLO 1 R10 NC R37 NC PLLCTRL S Selection by PC CONTROL R11 0Q 1 PLLCTRL1 0 R112 NC R38 02 B AT76C651 PLL control B PLLCTRL 1 R11 NC R38 NC PLLCTRL2 0 R6 200 R27 NC ius Selection of bit 2 for AT76C651 PLL control PLLCTRL2 1 Re SNG eos e B Note 1 NC No Connect AT76C651 I C By default on the board Address m C AT76C651 address 0001101 bin Configuration m C Tuner address 11000010 bin Bit MSB LSB Contents 0 0 0 1 1 I2CADDR1 I2CADDRO Read write R W PLL Control Bits 3 Configuration Prep 5 Fal where Fret AT76C651 Reference Frequency x 80 MHz Fyta Oscillator Frequency Quartz or XO Table 9 n PLLCTRL2 PLLCTRL1 PLLCTRLO Note 2 1 0 0 Bypass the PLL 4 0 0 0 5 0 0 1 When using XTAL oscillator 6 0 1 0 by default PC drives PLLCTRL1 amp 0 7 0 1 1 Note Results of other configurations cannot be assured AIMEL 2 7
11. Tuner switch activation On Off m SETAUTOCFG enables automatic configuration see AT76C651 Datasheet Lit No 1293 m RESTART performs a Software Reset to initialize device datapath the configuration registers are not modified 3 2 Configuration Figure 3 2 Configuration Menu Menu E 64 amp 5728Mb qam AT76C651 Evaluation Board Software 5 or Hard Reset Ctrl N This menu allows standard operations on files m Creates a new configuration and executes a hardware reset m Opens a configuration file m Saves a configuration file m Prints C registers list m Print Preview displays saved I C parameters and Monitoring registers AT76C651 Evaluation Kit User Manual AIMEL 3 3 Software Installation 3 3 Parameters The Parameters Menu opens a series of windows for configuring the AT76C651 Menu Figure 3 3 Parameters Menu EV 64 6 5728Mb qam AT76C651 Evaluation Board Software Parameters 3 4 AIMEL AT76C651 Evaluation Kit User Manual 3 3 1 General Configuration Window Software Installation Figure 3 4 General Configuration Window General Configuration x QAM Modulation Symbol Rate 55 Mbaud DDS Frequency 7 5 MHz m Mapping type Demodulation type for QPSK only DVB mapping Coherent demodulation C DAVIC mapping C MNon coherent demodulation Tuner Configuration RF Frequency 51 MHz Europe I2C Tuner address 1100001 12C Tuner On C USA
12. configured by the SetAutoCfg button in the Main Window m Q Manual Inversion Select manual inversion otherwise the setting is automatic m Frame Length Length of frame L x M Deinterleaver m Frame Synchronization Word First byte of MPEG2 Frame m Deinterleaver Branch Number I Deinterleaver configuration m Deinterleaver Memory Step M Deinterleaver configuration m FEC Inhibitions Disable the specified functions 3 12 AIMEL AT76C651 Evaluation Kit User Manual Software Installation 3 3 9 PID Filtering Figure 3 12 PID Filtering Window Window PID Filtering Configuration PID1 Filter Value 0000 Hex 1FFF Filter1 On PID2 Filter Value 0000 Hex 1FFF l Filer20n Cancel PID3 Filter Value 000000 Hex lt FFFFFF PID3 Filter Mask 000000 Hex lt FFFFFF Reload from c This menu specifies the PID of MPEG frames which must be flagged by FLAGPIDO amp FLAGPIDG1 pin output PID values can be configured only if the filter is on PID1 PID2 and the mask is not null PID3 3 4 View Menu Figure 3 13 View Menu E 64 amp 5728HMb qam AT76C651 Evaluation Board Software Ol x Configuration Parameters BAYER Help v Status Bar r General configuratior Y Monitoring On Off r Monitoring Constellation Display nR amp f GAM type Lon els n Display BERI 0 5 Equalizer Display BER2 8 Symbol Rate 5 728 Mbaud NPERR 255 AGCI 100 D
13. 0 03 Tracking Damping Factor 4 min 0 5 max 4 0 typ 1 0 WARNING These parameters are automatically computed when Set amp utoCfg is performed other parameters may modify the performance Reload from IC This window allows the configuration of Carrier Recovery Parameters These parameters are automatically configured by the SetAutoCfg button in the Main Window 3 3 6 AGC2 Configuration Figure 3 9 AGC2 Configuration Window Window AGC2 Loop Bandwidth boost 4 min 0 max F typ see datasheet AGC2 Loop Bandwidth normal 6 min 0 max F typ see datasheet Cancel AGC2 Initial Gain 6 02 dB Freeze AGC2 E WARNING These parameters are automatically computed when Set amp utoCfg is performed other parameters may modify the performance Reload from IC This window allows the configuration of AGC2 parameters These parameters are automatically configured by the SetAutoCfg button in the Main Window AT76C651 Evaluation Kit User Manual Software Installation 3 3 7 Equalizer Window Figure 3 10 Equalizer Window Equalizer Configuration Equalizer Inhibition E i Freezes Equalizer n ET Equalizer 16 taps only Must be selected when fref 4 gt symbol rate gt fref 8 __ Cancel Equalizer Structure Central Tap Adaptation Mode LE Linear Equalizer C Rieal adapted Imag adapted DFE 8 taps forward 24 feedback Real adapted Imag 0 DFE 16 taps forward 16 feedback Real
14. 540 1759 Atmel Rousset Zone Industrielle 13106 Rousset Cedex France Riverside Way Camberley Surrey GU15 3YL England TEL 44 1276 686677 FAX 44 1276 686697 TEL 33 4 42 53 60 00 FAX 33 4 42 53 60 01 Asia Atmel Asia Ltd Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong TEL 852 27219778 FAX 852 27221369 Japan Atmel Japan K K Tonetsu Shinkawa Bldg 9F 1 24 8 Shinkawa Chuo ku Tokyo 104 0033 Japan TEL 81 3 3523 3551 FAX 81 3 3523 7581 Fax on Demand North America 1 800 292 8635 International 1 408 441 0732 e mail literature atmel com Web Site http www atmel com Digital Video BBS Broadcasting 1 408 436 4309 Atmel Corporation 1999 Atmel Corporation makes no warranty for the use of its products other than those expressly contained in the Company s standard war ranty which is detailed in Atmel s Terms and Conditions located on the Company s web site The Company assumes no responsibility for any errors which may appear in this document reserves the right to change devices or specifications detailed herein at any time without notice and does not make any commitment to update the information contained herein No licenses to patents or other intellectual prop erty of Atmel are granted by the Company in connection with the sale of Atmel products expressly or by implication Atmel s products are not authorized for use as critical components i
15. AT76C651 Evaluation Kit USER MANUAL Table of Contents Section 1 Igi fore E osi o a PRESE 1 1 1 13 RSCOPE MEENE endi dide RI tee ted et ust 1 1 1 2 Deliverables nee eene o eene tle ede Leiden ute 1 1 1 3 System Requirements sse eene 1 1 Section 2 Setting Up the EBC651 Evaluation Board esssssss 2 1 2 1 Board F nctionality 5 erii dire tete tede 2 1 2 2 Board Interfaces ciii in i n e E aA T 2 1 2 3 EBC651 Board and Layout 2 1 2 4 External ACCESS iie e ig e ER ees 2 2 2 4 1 Power Supply dui eset eu od eddie ter dolce Lucan 2 2 24 2 JREdDpUbusss rete eee 2 2 24 3 PC Control Data dE RR ER E gas 2 2 2 4 4 MPEG2 Data Oup t irsini iniii iiini enne 2 3 245 mig Waveforms a angeli itbgte to 2 5 2 5 TL6St ico tie ut EO o pueee i eanaeenie 2 5 2 6 Board Configuration sse 2 7 2 6 1 AT76C651 IC Address Configuration eseessssseee 2 7 2 6 2 PLL Control Bits Configuration sesseeeenee 2 7 Section 3 Software Installation aos RERUM UE EUER 3 1 Siti Main WIngOowW ieri nett erecto rtr te Seit iori DeL Huila aei Es 3 2 3 2 Configuration Menu sesssssssesseseeeeeennnrennenn nnne 3 3 3 9 Parameters Men ode e ed cia ti etas 3 4 3 3 1 General Configuration Window sse 3 5 3 3 2 Output Mode Configuration Window
16. CLK Enable the TUNCLK output also called CLKO on TP2 pin 4 with the selected rate of Fj4 Oscillator Frequency m IRQ POLARITY Select the activation level for IRQ output tri state when released m IRQ MASK Select the event which activates the IRQ Unlock 1 IRQ activated when LOCK 1 signal goes low Lock 1 IRQ activated when LOCK 1 signal goes high Unlock 2 IRQ activated when LOCK 2 signal goes low Lock 2 IRQ activated when LOCK 2 signal goes high Signal Input Loss IRQ activated when there is no input signal to AT76C651 Frame Lost IRQ activated when a frame is uncorrected by the RS Decoder Periodic Interruptions Generate a periodic interruption with the selected period T Periodic Interruptions x 204 x 8 D symbo1 X Nbits Symbol Example Periodic interruptions 2048 frames 16384 frames 100 million bits T Deymbo1 6 Mbaud 64 QAM 0 09 s 0 74 s 2 77 s AT76C651 Evaluation Kit User Manual AIMEL 3 7 Software Installation 3 3 3 AGC1 Control Figure 3 6 AGC1 Control Window Window AGC1 Control x m External AGC Minimum value 0 Imin 0 max 255 typ 0 Cancel Maximum value 255 min 0 max 255 typ 255 Cancel Freeze AGC D Baseband conversion configuration m Constant PM Output Disable DC offset compensation Iv Amplifier with negative slope L min 0 max 255 Reload from IC This dialog window allows the configuration of the external Ana
17. DS Frequency 5 99991 MHz AGC2 7 13dB Timing Offset 263 kHz Frequency Offset 478 kHz C N 18 1 dB Phase Noise 47 1 dBc 86 3 dBc Hz at 10 kHz Tuner RF RF Frequency 100 MHz AGC1 Lock O 120 TunerOn AGC2 Lock 9 LOCK 1 Timing Lock LOCK 2 AT76C651 Carrier Lock oO A MEL Bie Equalizer Lock bel BG x parsone FEC Lock O Gime I2C using LPT1 f F 5 etAutoCig Restart Displays Received Constellation NUM A This menu enables the user to configure the screen display and view the QAM constel lation and equalizer m SIATUS BAR Enable Disable the status bar at the bottom of the Main Window m MONITORING On Off Enable Disable the automatic update of monitoring information AT76C651 Evaluation Kit User Manual AIMEL 3 13 Software Installation m CONSTELLATION DISPLAY Opens a window displaying the QAM constellation Note As data are collected by a slow I C interface all points cannot be displayed In Demo Mode all points are random data Constellation Display eo poa ow we g od E eR gi 3g Z w The cursor allows the user to choose the zoom level no effect on the device 3 14 AIMEL AT76C651 Evaluation Kit User Manual Software Installation m EQUALIZER DISPLAY Opens a window monitoring the equalizer coefficients and the spectrum compensation Equalizer Display AT76C651 Evaluation Kit User Manual AIMEL 3 15 Software Installation
18. Setting Up the EBC651 Evaluation Board 2 8 AIMEL AT76C651 Evaluation Kit User Manual AIMEL Section 3 Software Installation The AT76C651 Evaluation Kit software is provided for performance evaluation of the AT76C651 circuit The software simplifies the configuration and transmission monitoring By default the software is configured to be used with this evaluation board in DVB mode however it is possible to configure some parameters to effect specific test and measurement operations To install the software execute SETUP EXE and follow the instructions given When the software starts the PC printer ports are scanned to find a powered evaluation board If no board is found a special DEMO MODE is enabled In this mode the software can be tested without the evaluation board Note To prevent damage on your PC printer port connect the board only when the PC is turned off The following screen images can differ slightly depending on user software version AT76C651 Evaluation Kit User Manual 3 1 Software Installation 3 1 Main Window Figure 3 1 Main Window E 64 amp 5728Mb qam AT76C651 Evaluation Board Software IDE x Configuration Parameters View Help r General configuration m Monitoring QAM type 64 04M BERT fm BER2 05 Symbol Rate 5 728 Mbaud NPERR 255 AGCI 100 DDS Frequency 5 99991 MHz AGC2 52 dB Timing Offset 235 kHz Frequency Offset 1 02e 003 kHz CN
19. ect 9 No Connect 10 No Connect 11 SDA IN C data from AT76C651 to PC 12 No Connect 13 No Connect 14 SDA OUT C data from PC to AT76C6510 15 No Connect 16 No Connect 17 SCL OUT I C clock from PC to AT76C651 18 GND 19 GND 20 GND 21 GND 22 GND 23 GND 24 GND 25 GND Notes 1 All signals are inverted by buffers 74LS05 mounted on the board 2 These signals are also inverted by the PC parallel port 2 4 4 MPEG2 Data Output Connector Type Mechanical female SUB D 25 pins PCB Reference J7 DATA OUTPUT DC Characteristics Technology 74HCT541 high speed CMOS TTL logic Output Max Current 20 mA Low Level Output Voltage 0 33V max 6 mA load High Level Output Voltage 4 00V min 6 mA load 5 00V Max AT76C651 Evaluation Kit User Manual AIMEL 2 3 Setting Up the EBC651 Evaluation Board 2 4 Table 4 Connection Table Pin Signal Name Description 1 CORBYTE Corrected Byte Indicator 2 FVALID Valid MPEG2 TS Frame 3 FSTART Start of MPEG2 TS Frame 4 DVALID Byte Clock MPEG2 TS Byte Output Enable 5 DO LSB 6 D1 7 D2 8 D3 DATAOUT MPEG2 TS Parallel Byte 9 D4 10 D5 11 D6 12 D7 MSB 13 CORFAIL RS Packet Not Corrected 14 GND 15 GND 16 GND 17 GND 18 GND 19 GND 20 GND 21 GND 22 GND 23 GND 24 GND 25 GND AIMEL AT76C651 Evaluation Kit User Manual Setting Up the EBC651 Evaluation Board
20. log AGC AGC1 and PWM output m External AGC Minimum Value Define the minimum limit of the AGC1 Output Level 1V for this tuner so 51 dec Maximum Value Define the maximum limit of the AGC1 Output Level 3V for this tuner so 153 dec Freeze AGC1 Freeze the current value of AGC1 m Baseband conversion configuration Disable DC Offset Compensation Disable the DC Offset correction Amplifier with negative slope Change sign of slope for AGC Output positive for this TUNER Slope negative Activated when the control voltage increases and the amplifier gain decreases m Constant PWM Output Define CSTPWM Level Output if used optional 3 8 AIMEL AT76C651 Evaluation Kit User Manual Software Installation 3 3 4 Timing Recovery Figure 3 7 Timing Recovery Configuration Window Configuration Tiina F Window iming Recovery Configuration This window allows the configuration of Timing Recovery Parameters These parameters are automatically configured by the SetAutoCfg button in the Main Window AT76C651 Evaluation Kit User Manual AIMEL 3 9 Software Installation 3 3 5 Carrier Recovery Figure 3 8 Carrier Recovery Configuration Window Configuration Carrier Recovery Configuration xi Window Acquisition Loop Bandwidth 0 029 min 0 001 max 0 1 typ 0 03 en S TE Cancel Acquisition Damping Factor 1 min 0 5 max 4 0 typ 1 0 Tracking Loop Bandwidth 0 03 min 0 001 max 0 1 typ
21. n life support devices or systems Marks bearing and or are registered trademarks and trademarks of Atmel Corporation Printed on recycled paper 1320A 10 99 0M Terms and product names in this document may be trademarks of others
22. os an nagg OD ODDO NN WAND E Ce o R54 LITT cese D42 kx ER O aW 15 FREE Rituum xa TEMO 297 pog maces R41 goo R21 EES C51 E13 C53 R61 ix R60 i R15m3 R1410 Note This drawing is not to scale AIMEL AT76C651 Evaluation Kit User Manual Appendix Glossary and Schematics Figure 4 14 EBC651 Evaluation Board Connection POWER SUPPLY gt N e Ur gt N um p QAM MODULATOR or CATV NETWORK OUTPUT CATV NETWORK DVB DAVIC QAM DEMODULATOR AT76C651 Evaluation Kit User Manual AIMEL 4 5 Document Details Title AT76C651 Evaluation Kit User Manual Literature Number 1320A Date October 1999 Revision History Revision A October 1999 Important Notice Because the program is licensed free of charge there is no warranty for the program to the extent permitted by applicable law Except when otherwise stated in writing the copyright holders and or other parties provide the program as is without warranty of any kind either expressed or implied including but not limited to the implied warranties of merchantability and fitness for a particular purpose The entire risk as to the quality and performance of the program is with you Should the program prove defective you assume the cost of all necessary servicing repair or correction In no event unless required by applicable law or agreed to in writing will any cop
23. otal 900 mA max 1 5 mA max Op Amplifier if used VEe 12V t 596 20 mA max IF Amplifier Total 22 mA max Vac 32V 1V 1 5 mA max Tuner Varicap very sensitive 242 RF Input is Table 2 RF Input Tuner Type DAT7021 DAT7025 Characteristics European Version US Version Input Impedance 75Q 5Q unbalanced 75Q 5Q unbalanced Input Frequency Range RF 48 25 MHz to 863 25 MHz 55 25 MHz to 801 25 MHz Band Width 8 MHz 6 MHz Connector Type RCA Jack Type F 3 8 UNEF 2A rec Range for Digital c dBm to 41 dBm 63 dBm to 37 dBm Output Frequency IF 36 MHz 44 MHz 2 4 3 PC Control Data Connector Type Mechanical female SUB D 25 pins PCB Reference J6 PC CONTROL DC Characteristics Technology 74LS05 Low Shottky Output low level current 8 mA max open collector High Level Input Voltage 2 00V min Low Level Input Voltage 0 80V max Low Level Output Voltage 0 50V max 8 mA load High Level Output Voltage Voc supply on board 5 50V max AC Characteristics Frequency Input 10 MHz max 2 2 AIMEL AT76C651 Evaluation Kit User Manual Setting Up the EBC651 Evaluation Board Table 3 Connection Table Pin Signal Name Description 1 No Connect 2 PC_CTRLO Bit 0 for AT76C651 PLL Control 3 PC CTRL1 Bit 1 for AT76C651 PLL Control 4 No Connect 5 RESET PC Hardware Reset 6 No Connect 7 No Connect 8 No Conn
24. r Board Parameters Quartz or XO Frequency 60 MHz m x frequency Reload from IC IC Reference Frequency fi inactive PLL of Quartz XD Note f one of the General Registers except Tuner Configuration has been modified a SetAutoCfg must be carried out so that other registers are reconfigured coher ently Some registers may then be modified to match specific needs A software restart in the Main Window is recommended after a configuration change m QAM MODULATION Select demodulation type QPSK 16 32 64 128 256 512 1024 QAM Note Demodulation Type is indicated in main window if QPSK is selected m SYMBOL RATE nce Mande o d naicate In au symbol 8 if 32 taps equalizer F xtal D symbol 2 1 0 m DDS FREQUENCY Indicate the internal Downconverted Frequency according to subsampling fre quency used by the ADC Note Correct value is automatically computed m MAPPING TYPE Select DVB or DAVIC mapping m DEMODULATION TYPE FOR QPSK ONLY Select coherent demodulation or non coherent demodulation m TUNER CONFIGURATION Indicate RF Frequency Input 62 50 kHz step size Indicate IC TUNER address Fixed on this evaluation board if 16 taps equalizer a roll off AT76C651 Evaluation Kit User Manual AIMEL 3 5 Software Installation I C Tuner On on Select type of board and tuner recognizable by a sticker on the tuner unit USA version DAT7025 48 25 MHz lt RF lt 863 25 MHz
25. stallation 4 An appendix contains a glossary and schematics of the device and board The AT76C651 Evaluation Kit contains m An Atmel evaluation board EBC651 containing the AT76C651 circuit m Microsoft Windows 95 98 compatible software on CD ROM to configure and monitor the AT76C651 device The CD ROM contains all documentation for the AT76C651 device and the EBC651 evaluation board m A cable to connect the evaluation board between the PC CONTROL Connector to a PC parallel port The pre requisites for use of the AT76C651 Evaluation Kit are m Three DC power supplies m A QAM signal source e g QAM modulator Digital CATV Network etc m A PC with Windows 95 98 installed Windows NT is not supported A CD ROM drive to install software An SVGA display An available parallel port LPT1 or LPT2 AT76C651 Evaluation Kit User Manual 1 1 Introduction AT76C651 Evaluation Kit User Manual AIMEL 1 2 AIMEL 2 1 Board Functionality 2 2 Board Interfaces 2 3 EBC651 Board and Layout Section 2 Setting Up the EBC651 Evaluation Board The RF input signal is downconverted to an IF signal by a tuner integrating an AGC The analog signal goes through a SAW filter to attenuate adjacent channels A fixed gain amplifier is used to compensate the SAW filter attenuation The analog signal is sent to the AT76C651 device via an external 10 bit analog to digital converter to be processed see AT76C651 datasheet Litera
26. ture Number 1293 At the output the digital MPEG2 frame and synchronization signals are available The EBC651 evaluation board consists of three interfaces m CATV Tuner Analog input ready to receive UHF VHF frequencies in compliance with European or US regulations m MPEG2 Data MPEG2 frame and several synchronization signals are available to be sent to an MPEG2 device e g Demux Decoder etc to effect measurement bit error rate channel distortion constellation m C Interface Controlled by a PC parallel port used to configure the AT76C651 demodulator and the DAT702X tuner Note Itis possible to observe some signals to evaluate the transmission quality and other information by using test connectors and LEDs Storage temperature 25 C to 75 C Operating Temperature 0 C to 55 C Board dimensions 100 x 100 mm without connectors Height 50 mm ESD protection The PCB is not sensitive if standard EMC rules are followed PCB Design Is provided as a reference design for Atmel customers AT76C651 Evaluation Kit User Manual 2 1 Setting Up the EBC651 Evaluation Board 2 4 External Access 2 4 1 Power Supply Three power supplies are required Table 1 Power Supply Requirements Name Voltage Current Devices 96 mA max Tuner 20 mA max PC Buffers 40 mA max MPEG2 DATA Buffers Voc 5V 5 600 mA max 3 3V AT76C651 63 mA max 3 3V External ADC if used 80 mA max LEDs T
27. yright holder or any other party who may modify and or redistribute the program as permitted above be liable to you for damages including any general special incidental or conse quential damages arising out of the use or inability to use the program including but not limited to loss of data or data being rendered inaccurate or losses sustained by you or third parties or a failure of the program to operate with any other programs even if such holder or other party has been advised of the possibility of such damages Due to software upgrades slight differences may exist between the version described in this manual and the version delivered to customer This design can vary slightly depending on the version of the board used The user must assume the entire risk of using this evaluation kit For all questions regarding the information in this document please contact Atmel Corporation Digital TV Development Center Orlytech Bat 526 2 all e Maryse Basti 91781 Wissous Cedex France Tel 33 0 1 70 03 30 05 Fax 33 0 1 70 03 30 13 e mail address ylevy es2 fr AIMEL AT76C651 Evaluation Kit User Manual AMEL T A Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose CA 95131 TEL 408 441 0311 FAX 408 487 2600 Europe Atmel U K Ltd Coliseum Business Centre Atmel Operations Atmel Colorado Springs 1150 E Cheyenne Mtn Blvd Colorado Springs CO 80906 TEL 719 576 3300 FAX 719
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