ES302

ES302 DEMONSTRATION BOARD ISD-ES302.PDF 02/10/06 DEVICES SUPPORTED: Products Supported ISD4002-120 ISD4002-150 ISD4002-180 ISD4002-240 ISD4003-04M ISD4003-05M ISD4003-06M ISD4003-08M ISD4004-08M ISD4004-10M ISD4004-12M ISD4004-16M CONTENTS OF KIT: − − − − Two AA Battries 16 Ohm Speaker ES302 Demo board with user’s guide Three ISD4003 PDIP Samples Ordering Code ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 ISD-ES302 OVERVIEW: The ES302 Demo board is designed to let listeners hear the voice quality of the 3 volt part and to demonstrate some of the features available through the SPI bus control. HARDWARE: The three major Integrated Circuits on the board are the ISD4000 voice chip, U2, the NSC COP820C microcontroller, U4, and an audio chip, U3. The audio chip is an ISD1020 of which only the microphone preamplifier and the speaker driver are used. It is run on 5 V whereas the ISD4000 is run on 3 V. The audio chip would not normally be needed because the audio input and speaker output functions are already on the board in a cellular phone, for example. The board is powered by two AA cells on the bottom side. These cells drive a voltage converter to get the 5 V for the audio chip and the microcontroller. This voltage is then regulated down to 3 V (or 3.3 VDC) for the ISD4000 device. SOFTWARE: The COP microcontroller provides the interface between the user’s fingers on the keyboard and the ISD4000 device. It interprets the key strokes and issues the appropriate commands to the ISD4000. It also monitors the ISD4000 status registers and Interrupt Output to keep track of operations. ISD-ES302.PDF 02/10/06 INSTRUCTIONS: The keyboard on the ES302 Demo board consists of a 2 x 3 matrix of various colored keys. As with many microcontroller project boards, ISD has also provided the white MASTER_RESET button at the bottom of the board in case of program lockup. To operate the board, insert the desired ISD4000 product into the U2 socket. This can be any one of the four sample rates for comparison of the voice quality versus time duration listening. Power ON the board with S11 at the right hand side of the board. Up is the “ON” position. This applies the 3 V from the batteries to the converter chip. Check that the speaker is plugged into JP2 so that you can hear the results. The six push-buttons are labeled on the PCB. Pushing the Yellow “Go_to_Beg” button will reset the address pointer to the front of the chip or address 000. The indication that this has been done will be a double flash of the LED, D11, in the bottom left corner of the PCB. Pushing the Red “Record” button will turn on the Red LED to indicate that the chip is now recording anything it hears at the microphone M1 near the top center of the board. The board will continue to Record until the end of the chip is reached or the Black “Stop” button is pressed. At that time the LED will go out and the board will stop Recording. Pushing the White “Play_Last” button (or pushing the Yellow “Go_to_Beg” button, and then the White “Play_Next” button) will playback what you have just recorded. This message will play through to its end or stop when you press the Black “Stop” button. The Blue “Skip_to_Next” button will let you bypass a message and play the one after that message. For example, had you recorded three messages, beginning at the front of the chip, and gone back to the beginning after the last message then you could press the White “Play_Next” button to play message #1, press the Blue “Skip_tp_Next” button to bypass message #2 and then press the White “Play_Next” to play message #3. ISD-ES302.PDF 02/10/06 BT 2XAA + S11 ON/OFF L1 47uH C18 68uF R26 100K 3 ANA IN+ TO 3V U6 LT1121CZ-3.3 G IN N OUT D 2 C31 47uF 3V 1 C10 10uF C11 1uF 11 12 23 4 18 27 R28 100K C17 68uF C13 0.1uF 17 16 U2 ISD 33000 U2 ISD4000 XCLK INTB ATTCAP R7 4.7K R6 4.7K AUD OUT INT\ JP2 2 1 spkr 5V C9 1uF R25 3.3K C8 1uF C7 1uF ANA IN+ 26 25 VCC 3V 1 2 3 4 5 6 7 8 ANA IN+ ANA IN- C30 0.1uF ATTCAP VSSA VSSA VSSA VSSD VCCA VCCD AUD OUT RAC SS SCLK MOSI MISO 14 13 24 1 28 2 3 R22 4.7K R23 4.7K 16 15 14 13 12 11 10 9 C6 .1uF C5 10uF 21 86 U3 JU2 3PIN JUMPER VV CC CC DA 11 23 VV SS SS DA 111 451 SSA PPU +- X I N 22 01 AA NN AA IO NU T 111 879 MMA IIG CCC R E F C1 1uF R1 470K R2 5K U5 R27 220K 5 1 3 C19 0.1uF 7 LBI SHDN REF GND LX OUT 3/5 LBO 8 6 2 4 D12 MBR0520 C12 0.1uF C2 .22uF C3 .22uF M1 RAC AUDOUT SO SK 5 SI 3 U1B 6 4 9 11 U1E 8 10 AUDIO MUTE DISABLE +5V ATTCAP MICROPHONE ISD 2560 C14 1uF AAAAAAAAAA 0123456789 1 1234567890 X P E OC CP / OV L E D R MF K 222222 347526 5V 5V MAX856CSA TO LBO JU1 3PIN JUMPER SS\ R3 1K R4 5K U1C U1D 1 U1A 2 13 U1F 12 U1-14 TO 5V U1-7 TO GND PD P/R C4 1000uF 74HC04 +5V GO TO BEGIN S1 YELLOW D1 L2 R11 4.7K 1N914 1N914 D6 L7 R16 4.7K PLAY LAST S6 WHITE +5V NNNN //// CCCC U4 11 12 13 14 15 16 17 18 1 4 2 3 25 26 27 28 19 20 21 22 L0 L1 L2 L3 L4 L5 L6 L7 SO G7 SK SI INT G1 G2 G3 D0 D1 D2 D3 1 0987 IIII 321O CKI R9 3.3K +5V SKIP TO NEXT S2 BLUE D2 L5 R12 4.7K 1N914 D4 L4 R14 4.7K STOP S4 BLACK SO WAKE SK SI INT\ LBO RAC SS\ P/R PD 5 C15 82pF 1N914 VCC 6 NOTES: 24 D10 1N914 R8 47K L1 IS A SUMIDA CD43-470-KC D12 SUBSITUTE 1N5817 SCHOTTKY REC S3 RED D3 L1 R13 4.7K 1N914 D5 L6 R15 4.7K PLAY NEXT S5 LT.GREY +5V N/C RESET 1N914 GND 23 C16 0.1uF WAKE R20 4.7K R21 270 COP 820C S10 D11 RED LED BATT LOW R24 680 MASTER RESET INFORMATION STORAGE DEVICES Title ES302 DEMO BOARD Size B Date: Document Number 96-02-05 ES302 AB July 25, 1996 Sheet 1 of 1 REV B Q1 2N3904