ISD-COB1916

ISD-COB19xx User’s Manual Publication Release Date: June 12, 2008 Revision 1.0 J19 FMC1 2 J13 FMC3 J15 R/P J14 FMC2 1 3 4 5 Hardware Configuration 1. Frequency selection: J16, J17 and J18. Use jumper to select desired sampling frequency. Sampling Frequency Rosc J16 12 kHz 53.3 KΩ J17 8 kHz 80 KΩ J18 6.4 kHz 100 KΩ 2. Mode setting: use J12 to select /Mode or Norm mode operation. Example below illustrated Norm mode setting that the two left pins are shorted. After a new condition is selected on NORM / MODE , the power must be cycled to enable new setting. User can perform the following to recycle the power: remove power from the board -> short J12 momentary -> re-apply the power. Norm Mode Publication Release Date: June 12, 2008 Revision 1.0 (a) Mode: direct trigger mode a. SW4 ~ SW7, SW9~SW12 to play/record message. b. J15: set SW4~SW7, SW9~SW12 to perform play or record. c. J19 (FMC1), J14 (FMC2), J13 (FMC3): setup various fixedmessage configurations. d. J4, J5, J6, J7, J8, J9, J10, J11 should be in open (no jumper) positions. (b) Norm: address trigger mode a. J4 (S0), J5 (S1), J6 (S2), J7 (S3): start address b. J8 (M0), J9 (M1), J10 (M2), J11 (M3): end address c. SW1 (Record): level-hold (after 1 sec holding) or edge-trigger (toggle on-off), low active, recording from start to end addresses. d. SW2 (PlayE): low active input, edge-trigger playback from start to end addresses & toggle on-off. e. SW3 (PlayL): low active input, Level-hold playback start to end addresses. Holding PlayL constantly Low will perform looping playback function from start to end addresses. f. J13, J14, J15, J19 should be in open (no jumper) positions. 3. J1: Power connector 4. J2: Speaker connector 5. J3 Feed-Through: Low active input, Level-hold. When Feed-Through is selected (J3 shorted), the MIC+ input is configured to a single-ended input with 1Vp-p maximum input amplitude and feed-through to the speaker outputs. Publication Release Date: June 12, 2008 Revision 1.0 SCHEMATIC: SW7 1 + U1 3 S2 4 S3 PL VCCD 1 J11 E3 1 2 3 + J10 E2 1 2 + 3 + 1 2 3 1 2 3 6 E0 7 VSSA 8 E1 9 E2 10 E3 11 + VSSP2 SW8 1 M6 2 SW9 1 M7 2 SW10 1 M8 2 SW11 1 SP- J19 + 1 2 3 FMC1 12 13 14 NORM/Mode S1/M2 FT S2/M3 XCLK/FMC3 S3/M4 REC / R/P Play L/FMC1 Play E/FMC2 E0/M5 LED VSSA VCCA E1/M6 ROSC E2/M7 MIC- E3/M8 MIC+ VSSP2 AGC SP- VSSP1 VCCP VCCP SP+ 27 J3 26 FT 25 XCLK 24 REC 23 PE 22 LED 21 VCCA 20 ROSC 19 MIC- C9 18 MIC+ C10 FMC2 PE FT 2 1 0.1uF VSSP1 10uF + C4 2 17 1 VCCD or J1-1 VCCA R2 0.1uF 53K 1 R6 80K R7 100K VSSP1 15 SP+ J16 12KHz 2 J17 8KHz 2 J18 6.4KHz 2 0.1uF C12 16 0.1uF VSSP2 10uF + C6 4.7uF J2 1 2 0.1uF VSSD VCCA C7 10uF + C8 2 LED 1 VCCD C5 SW2 1 D1 R1 1k ISD1900 I14B00X Die 300 mil 28L SOIC VCCP C3 1 C2 2 2 10uF 1 VCCP + 2 PE 1 Sp+ R4 X1 4.7K MIC 1 2 2 pinstrip C1 SW1 Rec 1 SPEAKER + - M5 2 S0/M1 VCCD 28 1 E1 - PL E0 J9 5 VCCD 2 J8 2 S1 VCCD VSSD 1 2 S0 1 2 SW3 VSSD FMC3 J12 + J13 + J14 + J15 + 1 1 1 1 2 2 2 2 3 3 3 3 Mode Rec VCCP SW6 1 M4 2 GND Norm + VCCA M3 2 - S0 1 2 3 R3 Knowels (423-1023-ND) 2 SW5 1 J4 C11 4.7uF 1 M2 2 - S1 1 2 3 VCCD SW4 1 J5 + M1 2 - S3 - S2 J7 1 J6 1 2 2 3 3 + + 2 pinstrip POWER + - 1 2 J1 4.7K 0.1uF VSSA For any technical details of the ISD1900 series, please refer to the datasheet. Publication Release Date: June 12, 2008 Revision 1.0 R5 VCCA or J1-1 4.7K