 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| EV6021 Evaluation Kit User Manual UM6021/4 August 2000 1.0 Features * User's Prototyping Area Advance Information * For CMX602B Product Evaluation * Adjunct Box or Feature Phone Configuration * Single Power Supply Operation * LCD Display or RS232 Link to PC with Software * On-Board Regulator * Socketed Components for Adjustment * Socketed Space for Optional and Telco-Specific Components * Socketed PIC 16-Series C * On-Board PIC Programming with Serial Interface and PC Software * 2- to 4-Wire Interface with Handset Socket 1.1 Brief Description The EV6021 Evaluation Kit comprises a single board containing a CMX602B, line interface components, PIC Controller and the option of using either the on-board 4-line LCD module or interfacing to a PC via a serial communications port. For the latter mode of operation Windows software is supplied. When using the LCD module three switches are used to select the EV6021 mode of operation. The board is powered from a single 8 - 14V dc power supply; an on-board regulator sets VDD. LEDs indicate control, interrupt and detect line status (ZP, MODE, IRQN and DET) and the CMX602B may be driven from an external clock, or from its own crystal oscillator. Important signals can be monitored by test points. The CMX602B is socketed for easy replacement; there is room for the user to fit a ZIF socket. A user prototyping area is provided. On-board circuitry may be used to implement a wetting pulse and to place an ac or dc load on the line. A hook relay connects the 2- to 4-wire interface/op-amp hybrid for voice communications to the line. An external phone socket for adjunct box demonstration is provided, the connection to which can be disabled with a relay. A mutable local voice input and DTMF generator (for CIDCW acknowledgement tone) are provided. Operation is indicated by LEDs. The CMX602B supply current may be measured by removing a jumper. Where components are telco-specific (line impedance, line protection, ac-load, wetting pulse, etc.) space is provided for the user to add appropriate components. 2000 Consumer Microcircuits Limited Evaluation Kit for CMX602B EV6021 CONTENTS Section 1.0 1.1 1.2 Page Features ...............................................................................................1 Brief Description..................................................................................1 Preliminary Information.......................................................................4 1.2.1 Laboratory Equipment ............................................................4 1.2.2 Handling Precautions .............................................................4 1.2.3 Telephone Line Connection ...................................................4 Quick Start ...........................................................................................5 1.3.1 Setting-Up................................................................................5 1.3.2 Operation.................................................................................5 Signal Lists ..........................................................................................6 Circuit Schematics and Board Layouts............................................ 10 Detailed Description .......................................................................... 12 1.6.1 Hardware Description - Evaluation Board ........................... 12 1.6.2 Software................................................................................. 14 1.6.3 Firmware................................................................................ 19 1.6.4 Additional Information.......................................................... 21 Performance Specification................................................................ 26 1.7.1 Electrical Performance.......................................................... 26 1.3 1.4 1.5 1.6 1.7 2000 Consumer Microcircuits Limited 2 UM6021/4 Evaluation Kit for CMX602B EV6021 Block Diagram Power Supply Optional IBM-PC EV6021 Local speech input options Figure 1 Block Diagram 2000 Consumer Microcircuits Limited Caller ID Simulator 3 External phone option UM6021/4 Evaluation Kit for CMX602B EV6021 1.2 1.2.1 Preliminary Information Laboratory Equipment The following laboratory equipment is needed to use this evaluation kit: 1.2.1.1 1.2.1.2 1.2.1.3 8 - 14V DC Power Supply. Caller ID Simulator Speech Source If the user wishes to control the EV6021 from a PC and/or re-program the PIC on the board. 1.2.1.4 An IBM compatible PC; 20MHz '386 or better, running Microsoft Windows 3.11 / '95 /NT. The reprogramming software supplied (PICPROGA.EXE) runs most efficiently under DOS and cannot be used with Windows NT. Handling Precautions Like most evaluation kits, this product is designed for use in laboratory environments. The following practices will help ensure its proper operation. 1.2.2.1 Static Protection This product uses low power CMOS circuits which may be damaged by electrostatic discharge. Partially damaged circuits may function erroneously, leading to misleading results. Observe ESD precautions at all times when handling this product. Contents - Unpacking Please ensure that you have received all of the items listed on the separate information sheet (EK6021) and notify CML within 7 working days if the delivery is incomplete. 1.2.2 1.2.2.2 1.2.3 Telephone Line Connection This Evaluation Kit is not approved for direct or indirect connection to any public telecommunication system. Users are advised to observe local statutory requirements which may apply to this product. 2000 Consumer Microcircuits Limited 4 UM6021/4 Evaluation Kit for CMX602B EV6021 1.3 Quick Start This section provides instructions for users who wish to experiment immediately with the evaluation kit. A fuller description of the kit and its use linked to a PC appears later in this document. 1.3.1 Setting-Up THE EV6021 COMES PRE-CONFIGURED FOR OPERATION AT 3.3 VOLTS. An RJ11 (US style) phone jack is provided for caller ID simulator connection. Power is connected via the two-way socket, J5. No board adjustments are required by the user. Telco-specific components may be added, as required. 1.3.2 Operation Ensure no connection to serial port connector J6 and switch on the power supply. The message EF6021 Vx.x will be visible on the LCD module plus an indication as to which function option is selected. The three switches, SW2 to SW4, give the options of BT or Bellcore, Type 1 or Type 2 and Adjunct Box or Feature Phone. R1V1 R59 D19 RP2 LCD1 U5 C27 C28 R67 JP5 JP6 D24 PROG SW6 OP EF6021Vx.x C24 R24 Bell, Type2, FP J6 C1 RS232 HAND SET D16 J3 IRQN R54 D17 D18 R58 D15 D21 3 4 2 ZP MODE DET L'CAL MUTE BELL/BT TYPE2/1 FP/ADJ Figure 2 Function Selection A fuller description of these functions is given later in the document. If a type 2 demonstration is selected switch SW1 should be set to `RESISTIVE' which selects a factory-fitted 600 line termination, (R21) but an alternative value can be substituted. If a complex line termination is required, positions C11, R16 and R19 can be used with switch SW1 set to `COMPLEX'. An off-hook dc load is provided by R8. The factory-fitted value is 2k2 but this may be removed or an alternative value substituted. D7 R45 T1 HOOK C10 R21TP3 R19 U3 D7 R45 T1 HOOK C10 R16 R19 TP3 R21 U3 C11 R30 R16 TP4 C14 C11 R8 C7 R30 TP4 C14 R8 SW1 C7 RESISTIVE SW1 RESISTIVE COMPLEX COMPLEX Figure 3 Termination Positions 2000 Consumer Microcircuits Limited 5 UM6021/4 Evaluation Kit for CMX602B EV6021 1.4 Signal Lists CONNECTOR PINOUT - EVALUATION BOARD Connector Ref. J1 Connector Pin No. 1, 2 3 4 5, 6 Signal Name A B - Signal Type BI BI - Description Not Used. No connection needed. Bidirectional 'phone line (A = TIP). Bidirectional 'phone line (B = RING). Not Used. No connection needed. J2 1, 2 3 4 5, 6 B A - BI BI - Not Used. No connection needed. Bidirectional external 'phone socket (B = RING). Bidirectional external 'phone socket (A = TIP). Not Used. No connection needed. J3 1 2 3 4 Input Output Output Input Microphone +ve. Speaker drive. Speaker drive. Microphone -ve. J4 1 tip/pin2 VSS speech Power Input ) Jack socket for mutable input ) from external speech source. J5 1 2 VIN VSS DCD RXD TXD DTR VSS DSR RTS CTS - Power Power +ve power from external power supply. 0V power from external power supply. J6 1 2 3 4 5 6 7 8 9 Output Output Input Input Power Output Input Output - PC connection (linked to DTR). PC data output. PC data input. PC connection. 0V common connection to PC. PC connection (linked to DTR). PC `RTS' connection. PC `CTS' connection. Not used. No connection needed. 2000 Consumer Microcircuits Limited 6 UM6021/4 Evaluation Kit for CMX602B EV6021 TEST POINTS - EVALUATION BOARD Test Point Ref. TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12 TP13 TP14 TP15 TP16 TP17 TP18 Default Measurement 0V 0V VDD/2 VDD/2 VDD/2 0V 0V VDD 8 - 14V 3.3V VSS connection. VSS connection. Line signal after transformer. Hybrid transmit output (Local Voice). Hybrid receive output (Remote Voice). Muteable local speech input. CMX602B RD input, pin 3. CMX602B RT signal, pin 4. CMX602B AOP signal, pin 5. CMX602B RXD output, pin 15. CMX602B RXCK input, pin 14. CMX602B DET output, pin 13. CMX602B IRQN output, pin 12. A pull-up resistor R11 is included on board. VSS connection. VSS connection. VPP programming voltage input for PIC16C74A. VIN connection. VDD connection. Description 2000 Consumer Microcircuits Limited 7 UM6021/4 Evaluation Kit for CMX602B EV6021 JUMPERS - EVALUATION BOARD Link Ref. JP1 JP2 JP3 JP4 JP5 JP6 Positions 1-2 1-2 1-2 1-2 1-2 1-2 Default Position s/c s/c s/c s/c s/c s/c Description Connect handset socket to muteable speech path. Disconnect to supply an external clock to CMX602B via pin 2. Disconnect when supplying external clock to CMX602B via JP2 pin 2. Disconnect to measure IDD of evaluation device. Disconnect to supply an external clock to PIC16C74A via pin 1. Disconnect when supplying external clock to PIC16C74A via JP5 pin 1. s/c = short circuit SWITCHES - EVALUATION BOARD Link Ref. SW1 SW2 SW3 SW4 SW5 SW6 Positions 1-2/2-3 1-2/2-3 1-2/2-3 1-2/2-3 open/closed 1-2,6-5/2-3,4-5 Default Position 2-3 2-3 2-3 2-3 open 2-3,4-5 Description Resistive (default) or Complex line termination. Feature Phone (default) or Adjunct Box. Bellcore (default) or BT. Type 2 or Type 1. PIC16C74A reset. Operating (default) or programming mode. 2000 Consumer Microcircuits Limited 8 UM6021/4 1.5 R76 R4 R7 D11 K A K 1M8 C3 skt U2:A 120k R77 2 1 3 + NOTES: LMC6482N Evaluation Kit for CMX602B Not fitted Not fitted 1 250mA J1 FS1 R1 D30 R6 Not fitted 2 A 1 3 skt Wire link skt 1N4004 A skt Not fitted:C3 , C11, D1, R1, R2, R4, R6, R7, R16 and R19. LV WP D1 1N4004 K A K 4 2 10 5 RLY1:C D12 TR9 skt GND C18 ZVNL120A TR10 GND 1 6 R2 D31 X1 C19 18pF GND R43 1 WETTING PULSE AC LOAD AC 18pF 3.579545 JP2 2 2 1 7 Not fitted 8 5 100nF A K K A 6 100k D2 D4 R25 R29 R33 2 680pF 7 470k 6 skt PROTO_12*20 470k R15 240k GND skt 270k 160k TR2 2N7000 R35 R18 GND LMC6482N skt GND RLY2:C 10 8 7 VDD R8 1uF 4 1 3+ skt TP1 skt skt R22 100k TP4 7 TP2 R21 C14 330pF R30 100k U3:B LMC6482N 600R R19 skt 100k GND Not fitted Not fitted Not fitted 2000 Consumer Microcircuits Limited 1N4004 GND 1N4004 LINE skt Wire Link J2 ZVNL120A C9 R13 GND 470k C23 TP7 JP4 100k JP3 VDD VDD R/L 1 2 EXTERNAL PHONE MUTE 3 4 VDD External CLOCK PHONE 1N4004 GND 1N4004 C8 R14 C15 TP9 4 5 A K K 2 15 14 13 12 1N4004 A D3 R27 390k TR1 3 D5 82k 1 RING OR LINE REVERSAL SELECTION U4 100nF 470k TP8 GND TP10 TP11 TP12 TP13 VDD 100nF R20 ZVNL120A GND 22pF R28 C12 skt 8 1N4004 XTALN XTAL Vdd RXD RXCK DET IRQN ZP MODE Vbias RD RT 16 RXD RXCK DET IRQN PR1 C5 R11 7 100k 330nF C17 R32 270k 470k skt R36 6 470k U2:B AOP INV NINV Vss 11 10 9 ZP C22 100nF GND Circuit Schematics and Board Layouts Figure 4 Analogue Section 9 R12 5 + MODE C6 680pF 200k 100nF CMX602BP3 H/L VDD HOOK TR3 TP5 TP3 2 DTMF De-coupling for ICs 1 - 3. C7 T1 200k 22uF 6 3 C13 100nF R31 U5 VDD ZVP4424A 47nF C20 1 2 3 4 5 6 14 13 12 11 10 9 R44 1k VDD DTMF_D3 DTMF_D2 DTMF_D1 GND 3.579545 X2 7 8 C24 C10 LMC6482N R23 U3:A 1 C25 2k2 skt 1:1 600R R16 C26 47nF 47nF 47nF GND Vdd En /SING GROUP Vss OSCIN OSCOUT TONEOUT N/C D3 D2 D1 D0 MUTE D6 DTMF_D0 TP5088 R42 240R GND 6 - VDD 27pF skt C4 C11 VDD RESISTIVE 3 MATCH TO LINE GND SW1 GND R3 R10 1 2 R5 R40 R37 + 5 C21 36k 100nF 1k R9 510k 10k C2 COMPLEX U1:A 1 1 2 10nF 3 + 10k LMC6482N 2 - MUTE R34 15k TR4 TP6 C16 100nF R41 20k JP1 R17 47k U1:B 7 6 J3 4 3 C1 LMC6482N 5 + R24 100k R26 10k GND GND J4 BC183L 4K7 2 10uF 1 GND SKT_HANDSET EV6021 UM6021/4 GND A 3 1 2 R53 DET VI VO 3 2 D15 LM317T R72 240R 1uF 6V2 A VDD U8 C39 K V_LCD D27 1N5341 GND TP18 IRQN RP1 D16 2 U6:A 1M U6:B 7 6 A K 5 4 RXD SW5 2 1 1k R54 IRQN 1 TP16 R63 D23 750R SNPSKT2 J5 TP17 R70 1 2 3 4 5 6 RXCK ZP Evaluation Kit for CMX602B DET 9 A 1 VDD U6:C U6:D MODE 1k R55 D17 SWITCH_PTM 270R R64 D22 100k 3 VI VO 2 VPP C31 33uF U9 LM317T K C30 1N4001 GND GND GND 1N914 GND GND GND R71 Not fitted ZP 10 1k R56 D18 VDD VDD D25 A MODE 240R 1k C40 1N4001 1uF 6V2 H/L D19 1N914 360R skt R68 33R R69 RB7 RB6 RB5 RB4 1 RB3 RB2 RB1 RB0 33 34 35 36 3 37 38 39 2 40 AC RA3 RA4 RA5 RE0 RE1 RE2 VSS RD7 RD6 13 OSC1 OSC2 RC0 RC1 RC2 RC3 RD0 RD1 RC4 RD3 RD2 RC5 24 23 22 21 RC6 25 RC7 26 RD4 27 RD5 28 29 30 31 VDD 32 R46 5 6 7 3 1 9 3 1 2 10 2 8 WETTING PULSE HOOK AC LOAD 3 RA1 RA2 4 Switch DTMF 8k2 R1V1 GND VDD LCD MODULE LCD_M_4*20 LCD1 TP14 TP15 GND VDD VO RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 N/C N/C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 EV6021 UM6021/4 GND GND GND 1 2 3 4 5 6 7 8 2000 Consumer Microcircuits Limited VDD R59 100k 1N914 1 /MCLR RA0 2 R/L skt GND C37 10uF GND GND D20 PIC16C74A U7 SW6:A LV 10k 1N914 R75 D29 VDD C33 100uF C34 R67 D24 C29 47nF GND R65 R66 1M 1M 1N914 C32 100nF 16 4 5 6 12 11 10 9 Vdd C2+ C2VR1OUT T1IN T2IN R2OUT C1+ V+ C1R1IN T1OUT T2OUT R2IN Vss 1 2 3 13 14 7 8 15 WP R38 10k 10k R39 1k R47 1k De-coupling for IC 6. 47nF 10k GND WP VDD VDD C36 VDD C41 C42 SW2 SW3 SW4 2 12 Vss C43 100nF 100nF D8 AC LOCAL MUTE FEATURE PHONE ADJUNCT BOX BELLCORE BT TYPE 2 TYPE 1 3 1 D9 R60 R61 R62 4k7 4k7 4k7 U10 100nF A K D28 1N5341 47nF GND VDD Vdd 11 Figure 5 Control Section 10 R45 1k 1N914 1 GND GND R48 TR5 4k7 2 1 17 18 19 20 16 C38 100nF SW6:B 5 6 4 GND J6 D7 C27 GND BC183L C28 2 1 GND JP5 X3 4MHz JP6 15 GND 14 VDD 15pF HOOK PROG OP RXD TXD RTS CTS C35 100nF D10 RLY2:A 1N914 1 RLY_BT53 12 1 2 3 4 5 6 7 8 9 D13 TR8 GND 4k7 BC183L GND 11 12 MAX3232 DB9F GND GND GND RLY_BT53 RLY1:A 12 GND R51 15pF D26 U6:F 15 EXT PHONE MUTE 1N914 14 R73 51k R52 1k D14 XPHONE MUTE MUTE U6:E 1k L'CAL MUTE R58 D21 VDD R74 100k GND RP2 DTMF_D0 DTMF_D1 V_LCD R57 20k GND 1M DTMF_D2 DTMF_D3 On-Hook CLI loads Area R38 R46 board mod 1 2 3 4 VPP R64 D25 D22 RXD TP11 CMX602AP TP8 RD C15 D5 TR1 R32 R43 IRQN AOP R36 C12 D29 R35 U4 RP2 LCD1 U5 R44 U8 LCD_M_4*20 R70 R72 C39 D27 R57 C24 U1 R24 C4 R9 R26 C2 R37 TP6 C26 TP4 C14 R22 J4 LOCAL SPEECH R54 C1 R17 R55 R56 R53 R60 R62 R61 U6 D26 C41 D28 LINE TR9 5 VIN R71 VDD D8 D9 C42 R47 C19 JP3 JP2 C18 Evaluation Kit for CMX602B R6 TR10 C37 TP10 X1 C43 R39 TP16 TP17 TP18 J5 C31 R52 TP2 R1 R7 R25 JP4 TP12 DET TP13 U7 PIC16C74A RP1 RXCK D2 RT C17 C23 R27 R29 TP7 C29 R66 R33 VSS R63 C40 R69 C3 R68 D1 R76 R13 D4 R14 D3 TP9 R77 R75 U2 R20 R15 R18 R31 R42 TP14 C13 TR3 C20 R28 TR2 C22 R1V1 R59 FS1 D12 D31 D30 D11 D13 R2 J1 AC WP R4 SW5 VIN VSS U9 D23 C30 R65 TP1 VSS R48 D10 C33 OP TP5088 TR5 RLY2 C21 R40 R41 TP5 JP1 R10 DTMF Acknowledgement generation Area VSS D6 X2 C36 C38 C32 R73 R74 C35 U10 J6 MAX3232 HOOK R19 C16 U3 C11 R16 SW1 R30 R23 TR4 Figure 6 Evaluation Board Layout DTMF C34 74HC4049 D7 R45 T1 R34 C10 R21 TP3 RX RS232 R8 HAND SET D16 J3 R5 R3 D17 D18 R58 D15 D21 SW3 SW4 SW2 C7 RESISTIVE COMPLEX IRQN ZP MODE DET L'CAL MUTE BELL/BT TYPE2/1 FP/ADJ 2 To 4 Wire Interface (Line Hybrid) Area Handset Interface Area SW6 2000 Consumer Microcircuits Limited TP15 VSS C25 C6 R12 C5 R11 TR8 R51 C9 C8 RLY1 CMX602B Interface To Line Area J2 D19 D20 JP5 C27 X3 JP6 C28 R67 D24 D14 PROG 11 XPHONE MUTE EV6021 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6 1.6.1 1.6.1.1 Detailed Description Hardware Description - Evaluation Board Line Protection Line protection is provided by R1 (47), R2 (47), and D1 (Philips BR211 series 140V). These components are not fitted, but suitable values for UK applications are suggested in brackets. Wire links which bypass R1 and R2 will need to be removed if these resistors are fitted. AC or DC Load An ac or dc load is provided by R4 (827), R6 (1386) and C3 (139nF). These components are not fitted, but suitable values for UK applications are suggested in brackets. This load is switched in by TRI0. An LED is illuminated when this occurs. Wetting Pulse A wetting pulse load is provided by R7, which is not fitted. For UK applications, a suitable value may be in the region of 240 to 350. The wetting pulse is switched in by TR9. An LED is illuminated when this occurs. External Phone A second RJ11 socket, J2, is provided for an external telephone when the EV6021 is set to demonstrate adjunct box functions. When muted/disabled an LED marked `XPHONE MUTE' is illuminated. Note that this relay is normally closed, so do not connect a telephone to the external phone socket J2 when running feature phone demonstrations. 1.6.1.2 1.6.1.3 1.6.1.4 1.6.1.5 Transformer and Op-Amp Hybrid / 2- to 4-wire interface. The transformer and op-amp hybrid (formed by U3 A and B) are connected to the phone line by relay RLY2. When energised an adjacent LED is illuminated. An off-hook dc load, for feature phone mode, is provided by R8, factory set to 2k2. Line impedance matching is required in order to place signals on the line (acknowledgement tone of type 2 / off-hook / cidcw sequences) and to be able to send and receive speech and other signals (feature phone demonstration). Two impedance matching options are available, resistive or complex, which can be selected using switch SW1. For resistive matching R21 is factory set to 600. For complex matching fit C11 (310nF), R16 (370), R19 (620). Suggested values for BT applications are given in brackets. R8 and R21 are socketed for easy removal and replacement. Alternatively, matching components could be fitted across test points TP3 and TP4. Access to hybrid signals is provided as follows: The hybrid receive output (Rx = remote voice) is located on test point TP5. The hybrid transmit output (Tx = local voice) is located on test point TP4. 1.6.1.6 Local Speech Paths When emulating a feature phone, a muteable local speech path is available. A speech signal may be input at either testpoint TP6 or jack socket J4. Alternatively with jumper JP1 fitted the local voice can come from a telephone handset (not provided) connected to socket J3. When muted an LED marked `L'CAL MUTE' is enabled. Note that the local speech path has a gain of 12dB. 2000 Consumer Microcircuits Limited 12 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.1.7 Operating Voltage The operating voltage (VDD) is set to 3.3V. This may be altered by changing components R68 and R69 which are socketed. To select 5.0Volts set R68 = 620 and R69 = 100. The formula for calculating the values of R68 and R69 is as follows:R68 + R69 = 240 ( VDD - 125) . 125 . Where 240 is the value of R71 in ohms and VDD is the required supply voltage. 1.6.1.8 Clock/Oscillator The CMX602B may use either an external clock or its own xtal oscillator. A 3.58MHz xtal is provided on-board for the latter method. Two jumpers JP2 and JP3, which are normally fitted, select the xtal oscillator. An external clock may be supplied to JP2 pin 2 once the jumpers have been removed. The PIC16C74A may be provided with an external clock in the same way by removing jumpers JP5 and JP6. Note that PICs programmed by CML are only configured for use with the on-board 4MHz crystal. The DTMF generator uses its own 3.58MHz xtal because the xtal oscillator is only operational when the generator is active and the CMX602B has a 'zero-power' mode (in which its xtal oscillator is disabled) preventing it from supplying a clock to the DTMF generator. 1.6.1.9 Ring/Line Reversal Detection Ring/line reversal detection is provided by components C9, C8, R13, R14, R25 and R27 (or R27 in parallel with R29), plus D2-D5 and TR1. The response time is set by components R33 and C15. The evaluation board has been fitted with suitable components for UK applications. See CMX602B data sheet for further details. 1.6.1.10 CMX602B Tone Alert/FSK Receive Path This part of the CMX602B can be connected directly to the line, via amplifier U2: A, or to the Rx output of the 2- to 4-wire interface. When TR2 is conducting the signal from the line is disabled. Alternatively when TR3 is conducting the signal from the 2- to 4-wire interface is disabled. Note that if the signal path chosen is via the 2- to 4-wire interface absolute levels at the CMX602B will depend upon the line impedance of the caller ID simulator in use and on the quality of the termination of that line. This will have a bearing on tone alert decode and not-decode levels. 1.6.1.11 Handset Connection A telephone handset can be connected via socket J3. The speaker drive is derived from the Rx output of the 2- to 4-wire interface and the microphone output is fed to the muteable speech path via amplifier U1:A and jumper JP1. 1.6.1.12 IDD Measurement The evaluation device IDD may be measured by removing jumper JP4 and replacing it with a multimeter. 1.6.1.13 DTMF Answerback Code The DTMF answerback (digit D) for the type2 / off-hook / cidcw demonstrations is generated by U5 (National TP5088) and fed to the Tx input of the 2- to 4-wire interface. 2000 Consumer Microcircuits Limited 13 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.1.14 Line Voltage Monitoring An indication of the level of line voltage is provided at the PIC Controller port A bit 0 (Pin 2). For a 48 volt line the level at this point is 3.0V d.c. This pin of the Controller can be re-configured as an ADC input and, with appropriate firmware, be used to monitor the line voltage. Note that this feature is not used by the current firmware revision. 1.6.2 Software This section describes the operation of the EV6021 kit via the RS232 lead and the Windows software supplied. The sequence of events for the demonstrations is covered in the Section 1.6.3 (Firmware). Installation The ES6021 Windows Application Software consists of a single executable file named ES6021xx.EXE, where xx refers to the version number. Copy this from its 3.5" floppy disk to the hard disk of the user's PC. Windows NT and '95 For convenient and quick launching of the program create an ES6021 shortcut within the Start menu or Desktop. Windows 3.11 For convenient and quick launching of the ES6021 software create a new program group and ES6021 icon. 1.6.2.1 1.6.2.2 Start-up When the application is run the initialise dialog box will pop-up in front of the applications main window. At this point ensure the EV6021 is connected to an RS232 serial port of the PC, via connector J6, and turn on the power to the board. If cancel is selected the PC will not make a connection to the EV6021 board. 2000 Consumer Microcircuits Limited 14 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.2.3 Main Window Change the mode of operation of the CMX602B by checking the appropriate radio button in the CMX602B modes section. In the controls section checking either of External Phone Mute or Hook will energise the appropriate relay on the EV6021 board. Checking AC load or Wetting Current will apply the appropriate load to the line. Checking Local MUTE will disable the speech path via handset socket, J3 or jack socket, J4 or testpoint TP6. Whenever DTMF is checked the current digit (selected in the combo box labelled `Digit') will be generated by the EV6021 board (U5, TP5088). The on-hook detection options override the setting of switch SW3 and control the level at the CMX602B pin 3. The FSK/CAS source options override the setting of switches SW2 and SW4, selecting the path these signals take from the line to the CMX602B. The EV6021 Demonstrations buttons will run the functions or demonstrations described in the following sections. An indication will be made of the state of the RS232 communications link to the EV6021 board in the bottom right of the panel. 2000 Consumer Microcircuits Limited 15 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.2.4 RxFSK dialog box The EV6021 board is instructed to operate the CMX602B in receive mode with data re-timing selected. Characters received by the CMX602B will be displayed in the main read-only edit box. The display is limited to 20,000 characters and will be cleared when this limit is exceeded. The display can be cleared by the user by clicking the `Clear' button. Click cancel to return to the main window. 2000 Consumer Microcircuits Limited 16 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.2.5 Type 1/on-hook demonstration dialog box This dialog pops up when either the BT or Bellcore type 1 demonstrations are selected. The precise selection is displayed in the top left of the panel, in this case the BT demonstration is selected. The EV6021 is instructed to perform the appropriate caller ID demonstration and the message data is sent back to the PC and appears in the main read-only edit box. The display and controls work as described for the RxFSK dialog box. 2000 Consumer Microcircuits Limited 17 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.2.6 Type 2/off-hook demonstration dialog box This dialog box pops up when the BT/Bellcore type 2 demonstration is selected. The EV6021 is instructed to perform the off-hook / type 2 / CIDCW demonstration. The nature of the demonstration can be altered by selecting Feature Phone or Adjunct Box and Early or Late muting on the right hand side of the dialog box. The valid CAS detects and local Mute counters are provided to assist with talk-off and talk-down testing, see later sections. CLI message data is shown and the remaining controls are as described for the type 1 dialog box. 2000 Consumer Microcircuits Limited 18 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.3 Firmware This section describes the operation of the EV6021 kit using the LCD module and the demonstration selection switches SW2 to SW4. It also describes the sequence of events followed by the available demonstrations. Start-up As described in Quick start section. The opening messages will be EF6021 Vx.x (where x.x represents the version number), followed by an indication of the current selection from switches SW2 to SW4. 1.6.3.1 1.6.3.2 Demonstration Selection Use switches to alter the selection as indicated on the printed circuit silkscreen: SW2 - Adjunct Box or Feature Phone. SW3 - BT or Bellcore. SW4 - Type1 or Type2. When a new selection has been made the start up messages will be displayed on the LCD until a new CLI message has been received. 1.6.3.3 BT type 1 demonstration This demonstration covers the BT on-hook service initiated by a line reversal followed by an alert tone, see flowchart in CMX602B datasheet (application notes section). CLI message parameters are displayed on the LCD. On the EV6021 board, FET TR9 is switched on to provide wetting current for 15ms during the silent period between the alert tone and the FSK data. A resistor can be fitted in the R7 position if a current wetting pulse is required. FET TRI0 is switched on during the FSK receive period. components can be fitted in positions R4, R6 and C3. 1.6.3.4 If an ac termination is required, Bellcore type 1 demonstration This demonstration covers the Bellcore on-hook service associated with ringing, see flowchart in CMX602B datasheet (application notes section). Any ringing of duration < 500ms is assumed to be a line reversal and is ignored. CLI message parameters are displayed on the LCD. Relay 1 is energised during the FSK receive period. If an ac termination is required, components can be fitted in positions R4, R6 and C3. 1.6.3.5 BT and Bellcore type 2 demonstration This demonstration covers both the BT and Bellcore off-hook caller ID services, see flowchart in CMX602B datasheet (application notes section). If `Feature Phone' is selected, the local speech path is enabled and muted when a CAS tone is detected (when the CMX602B DET output is set in tone alert mode, termed early mute). Also signals from the line, e.g. CAS tone, will be taken from the Rx side of the 2 to 4 wire interface. If `Adjunct Box' is selected, the link to an external telephone, socket J2, is muted when a valid CAS tone has been received (when CMX602B IRQN pin goes low in tone alert mode, termed late mute). If the EV6021 is linked to a PC, see section 1.6.2, the point at which muting occurs can be toggled between early and late. 2000 Consumer Microcircuits Limited 19 UM6021/4 Evaluation Kit for CMX602B EV6021 Counters record the number of times muting has occurred (M) and the number of times a valid CAS tone has been detected (C). The counts are displayed on row 3 of the LCD. DTMF digit `D' is transmitted on to the phone line as an acknowledgement tone. If the EV6021 is linked to a PC other DTMF digits can be sent as an acknowledgement. CLI message parameters are displayed on the top two rows of the LCD. On the EV6021 board, the line termination resistor R21 (factory-fitted 600) should be fitted and the switch SW1 set to `RESISTIVE'. If an off-hook dc load is required, for feature phone mode, a resistor must be fitted in position R8 (factory-fitted 2k2). If a complex termination is required positions C11, R16 and R19 can be used with switch SW1 set to `COMPLEX'. 2000 Consumer Microcircuits Limited 20 UM6021/4 1.6.4 Evaluation Kit for CMX602B Near End Talk Off Power Supply 2000 Consumer Microcircuits Limited Additional Information Optional IBM-PC Figure 7 Near End Talk-Off Tests With The EV6021 EV6021 21 Input via external phone socket (adjunct box case) or handset socket, jack socket or TP6 (feature phone case) Speech Source EV6021 UM6021/4 Evaluation Kit for CMX602B EV6021 Power Supply Optional IBM-PC Far End Talk Off Far speech Caller ID Simulator EV6021 Figure 8 Far End Talk-Off Tests With The EV6021 2000 Consumer Microcircuits Limited 22 Speech Source UM6021/4 Evaluation Kit for CMX602B Near End Talk Down Power Supply 2000 Consumer Microcircuits Limited Optional IBM-PC Figure 9 Talk Down Tests With The EV6021 23 CAS tones EV6021 Caller ID Simulator Input via external phone socket (adjunct box case) or handset socket, jack socket or TP6 (feature phone case) Speech Source EV6021 UM6021/4 Evaluation Kit for CMX602B EV6021 1.6.4.1 In-circuit re-programming of PIC16C74A In order that the PIC16C74A Controller may be re-programmed the existing program must be erased by placing the device in a uv- eraser for approximately 15 minutes. TO ENTER PROGRAMMING MODE Remove power from board Set switch, SW6, to `PROG' Re-apply power to board Connect the programming voltage (VPP = 12.5V to 13.5V) power supply between test point TP16 (+ve) and VSS (-ve) (e) Ensure the PIC C programming utility PICPROGA.EXE is loaded into the PC under DOS and the PC is connected to the evaluation kit (f) Reset the EV6021 board by momentarily pressing switch, SW5 USING THE SOFTWARE - PICPROGA (a) (b) (c) (d) This is supplied on disk as a self-documented executable file PICPROGA.EXE for a PC running DOS (either directly or as a DOS window in Windows 3.11 or '95). It is not recommended for use on Windows NT systems. Please note that this programming software does not meet the Arizona Microchip Technology verification requirements for a "production quality" programmer. Also, it does not support the programming of ID locations and there is no checksum facility. The user interface consists of two windows. The top window contains the operating instructions and the bottom window shows the command line and data communications with the PIC C. When the top window first appears the user will be prompted to enter the number of the serial communications port to which the EV6021 board is connected. Once the user has entered this number, the following commands are displayed: press F press C press B press P press V press R press A to load file to enter Configuration Word. Currently - xxxx to check target device is blank. to program target device. to verify target device. to read target device. to view contents of program data array. press Esc to return to DOS. A new function from the above table can be selected whenever the >ok prompt appears in the bottom window. Notes: a) Assembler output files must be in the Intel hex format (.HEX) in order to be usable by this programming software. The PIC C supplied has a Configuration Word which is preset 3FB1H. This selects the crystal oscillator, disables the watch dog timer, enables the power up timer and disables code protection. The programming software currently defaults to 3FB1H. Consult Arizona Microchip Technology for more information on the Configuration Word. b) 2000 Consumer Microcircuits Limited 24 UM6021/4 Evaluation Kit for CMX602B EV6021 c) The "blank check" command (B) only looks at the first location. A programmed device will always have data in this location as it is the program start address. For each of the commands B,P,R and V the user will be prompted to manually reset the target C, by pressing the RESET switch (SW5) on the EV6021 Evaluation Board. This is because PIC programming always starts from location 0000 and the program counter can only be incremented. Pressing A will display the program data in the bottom window, formatted in pages of 48 consecutive locations. Use the d) e) TO LEAVE PROGRAMMING MODE (a) Remove power from board (including the programming voltage, VPP). (b) Set switch, SW6, to `OP'. (c) Power up board as described in previous sections for normal operation. 1.6.4.2 DTMF Generator For anyone wishing to write their own code for the EV6021 the code table for the DTMF generator, U5, is as follows: DTMF GENERATOR DECODE TABLE pin 12 (D3) pin 11 (D2) pin 10 (D1) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 pin 9 (D0) 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 DTMF CODE D 1 2 3 4 5 6 7 8 9 0 * # A B C 2000 Consumer Microcircuits Limited 25 UM6021/4 Evaluation Kit for CMX602B EV6021 1.7 1.7.1 Performance Specification Electrical Performance Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the Evaluation Kit. Min. -0.3 -0.3 -0.3 0 -20 +10 Max. 40.0 7.0 VDD + 0.3 +1.5 +20 +70 +35 Units V V V A mA C C Supply (VIN - VSS) Supply (VDD - VSS) Voltage on any pin to VSS Current into or out of VIN and VSS pins Current into or out of any other pin Storage Temperature Operating Temperature Operating Limits Correct operation of the Evaluation Kit outside these limits is not implied. Notes Supply (VIN - VSS) Supply (VDD - VSS) Operating Temperature External Clock Frequency for CMX602B External Clock Frequency (for C at 5.0V VDD) External Clock Frequency (for C at 3.0V VDD) Min. 8.0 3.0 +10 3.575965 0.1 0.1 Max. 14.0 5.5 +35 3.583125 20.0 4.0 Units V V C MHz MHz MHz Operating Characteristics For the following conditions unless otherwise specified: Evaluation Device and DTMF Generator Xtal Frequency = 3.579545MHz, C = 4.00MHz VDD = 3.3V to 5.0V, Tamb = +25C. Notes DC Parameters IDD (evaluation board - idle) AC Parameters Xtal/Clock Input to Evaluation Device `High' pulse width `Low' pulse width OSC1 Input to PIC C `High' pulse width `Low' pulse width Notes: 1 Min. Typ. 50.0 Max. Units mA 2 2 100 100 - - ns ns 50.0 50.0 - - ns ns 1. Relays not energised. 2. Timing for an external input to the CLOCK/XTAL pin. Operating Characteristics - Timing Diagrams For CMX602B timing information, refer to current CML CMX602B Data Sheet. 2000 Consumer Microcircuits Limited 26 UM6021/4 Evaluation Kit for CMX602B EV6021 CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are implied. CML reserves the right at any time without notice to change the said circuitry and this evaluation kit specification. Evaluation kits are supplied for the sole purpose of demonstrating the operation of CML products and are supplied without warranty. They are intended for use in a laboratory environment only and are not for re-sale, end-use or incorporation into other equipments. Operation of evaluation kits outside a laboratory environment is not permitted within the European Community. All software is supplied "as is" and is without warranty. It forms part of the evaluation kit and is licensed for use only in this kit, for the purpose of demonstrating the operation of CML products. Whilst all reasonable efforts are made to ensure that software contained in this product is virus free, CML accepts no responsibility whatsoever for any contamination which results from using this software and the onus for checking that the software is virus free is placed on the purchaser of this evaluation kit. Oval Park - LANGFORD MALDON - ESSEX CM9 6WG - ENGLAND Telephone: +44 (0)1621 875500 Telefax: +44 (0)1621 875600 e-mail: sales@cmlmicro.co.uk http://www.cmlmicro.co.uk |
Price & Availability of EV6021
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |