GENERAL DESCRIPTIONThe ISD2100is a digitalChipCorder®providing single-chip storage and playback of high quality audio. The device features digital de-compression, comprehensive memorymanagement, flash storage,and integrated audio signal path and Class D speaker drivercapable of delivering power of 400mW. This familyutilizes flash memory to provide non-volatile audio playback with duration up to 30 seconds (based on 8kHz/4bitADPCMcompression)for a single-chip audio playback solution. The ISD2100 can be controlled and programmed through an SPI serial interface or operated stand-aloneby triggers applied to the device’s six GPIO pins.The ISD2100 requires no external clock sources or components except a speaker to deliver quality audio prompts or sound effects to enhance user interfaces.In addition the part can provide non-volatile flash storage in 1Kbyte sectors eliminating the need for additional serial EEPROM/Flash devices.Compared to previousChipCorder series, this device provideshigher sampling frequencies, improved SNR, lower power, fast programming time and integrated program verification.FEATURESDuration oISD2130–30 seconds based on 8kHz/4bit ADPCM in 1Mbit of flash storageoISD2115A–15seconds based on8kHz/4bit ADPCM in 1Mbit of flash storageAudio Management oStore pre-recorded audio (Voice Prompts) using high quality digital compressionoUsesimple index based command for playback–no address needed.oExecute pre-programmed macro scripts (Voice Macros) designed to control the configuration of the device and playback Voice Prompts sequences.ControloSerial SPI interface for microprocessor control and programming.oStand-alone control where customized Voice Macro scripts are assigned to GPIO trigger pins.Sample Rateo7sampling frequencies 4, 5.3, 6.4, 8, 12.8, 16 and32kHzare available.oEach Voice Prompt can have optimal sample rate.Compression Algorithmsoμ-Law: 6, 7 or 8 bits per sampleoDifferential μ-Law: 6, 7 or 8 bits per sampleoPCM: 8, 10 or 12 bits per sampleoEnhanced ADPCM: 2, 3, 4 or 5 bits per sampleoVariable-bit-rate optimized compression.This allows best possible compression given a metric of SNR and background noise levels.Oscillator oInternal oscillator with internal reference: factory trimmed to ±1% deviationat room temperature. OutputoPWM: Class D speaker driver to direct drive an 8Ω speaker or buzzer.oDelivers 400mW at 3V supply.I/OsoSPI interface: MISO, MOSI, SCLK, SSB for commands and digital audio datao6 general purpose I/O pins multiplexed withSPI interface.Flash Storageo1Mbit (ISD2130) or 512Kbit (ISD2115A) of storage for combined audio/data.oFast programming time (20...
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