ISD3800FYI Datasheet, PDF (4/25 Pages) Nuvotem Talema – Digital ChipCorder with Digital Audio Interface

ISD3800
Differential µ-Law: 6, 7 or 8 bits per sample
PCM: 8, 10 or 12 bits per sample
Enhanced ADPCM: 2, 3, 4 or 5 bits per sample
Variable-bit-rate optimized compression. This allows best possible compression given a
metric of SNR and background noise levels.
• Oscillator
o Internal oscillator with internal reference: 2.048 MHz
o Internal oscillator with external resistor: 2.048 MHz with Rosc = 80kohm
o External crystal or clock input
Crystals support standard audio sampling rates of 2.048, 4.096, 8.192, 12.288
and 11.2896MHz
o I²S bit clock input
• Inputs
o Aux-in: Analog input with 2-bit gain control configured by SPI command
• Outputs
o PWM: Class-D speaker driver to directly drive an 8Ω speaker or buzzer
Deliver 1-watt output power at VCCSPK = 5V
o Aux-out: an analog single-ended voltage output
o Class-AB BTL: an analog differential voltage output
Deliver 1-watt output power at VCCSPK = 5V
Class-AB BTL can directly drive an 8Ω speaker or buzzer
Class-AB BTL can drive an 8Ω speaker or buzzer via an external amplifier
• I/Os
o SPI interface: MISO, MOSI, SCLK, SSB for commands and digital audio data
o I²S interface: I²S_CLK, I²S_WS, I²S_SDI, I²S_SDO for digital audio data
o 8 GPIO pins:
4 GPIO pins share with I²S
4 GPIO pins share with SPI Interface
GPIO pins can trigger Voice Macro for a pushbutton application
• 8-bit Volume Control set by SPI command for flexible mixing
• Operating Voltage: 2.7 ~ 5.5V
• Standby Current: 1uA typical
• Package:
o Green 48L-LQFP
• Temperature Options:
o Industrial: -40°C to 85°C
Publication Release Date: Sep 22, 2010
-4-
Revision 0.60