Si3000 VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE Features Complete voice codec solution includes the following: 84 dB ADC Dynamic Range Support for 32 Headphones 84 dB DAC Dynamic Range 3:1 Analog Input Mixer 412 kHz Sample Rates 3.35.0 V Power Supply 30 dB Microphone Pre-Amp Direct Serial Interface to DSPs Programmable Input Gain/ Direct Connection to Si303x/44/56, Ordering Information: Attenuation: 34.5 dB to 12 dB serial interface DAA chipsets See page 29. Programmable Output Gain/ Low profile 16-Pin SOIC Package Attenuation: 34.5 dB to 12 dB RoHS-compliant package available Pin Assignments Applications Si3000 Modem Voice Channel (DSVD) Speech Processing Telephony General Purpose Analog I/O SPKRR 1 16 SPKRL 2 15 LINEO MBIAS Companion chip for FDX HDST 3 14 GND ISOmodems with voice features SDI 4 13 V A SDO 5 12 V Description D 6 11 FSYNC LINEI The Si3000 is a complete voice band audio codec solution that offers high MCLK 7 10 MIC integration by incorporating programmable input and output gain/ SCLK 8 9 RESET attenuation, a microphone bias circt, ui handset hybrid circuit, and an output drive for 32 headphones. The Si3000 can be connected directly to the Si3034, Si3035, Si3044, and Si3056 North American and international DAA chipsets through their daisy-chaining serial interface. It also serves as a companion chip to a FAT ISOmodem chipset with voice features, providing hardware support for a handset and speaker phone. The device operates from a single 3.3 to V power 5 supply and is available in a 16-pin small outline package (SOIC). Functional Block Diagram Si3000 MBIAS 0/+10/+20/+30 dB MIC MCLK Prog Gain/ ADC Attenuator SCLK LINEI 0/+10/+20 dB FSYNC Digital SDI Handset Interface HDST Hybrid SDO 0/6/12/18 dB SPKRR Prog Gain/ Headphone DAC Attenuator Driver SPKRL LINEO 0/6/12/18 dB RESET Rev. 1.4 12/10 Copyright 2010 by Silicon Laboratories Si3000 High Pass FilterSi3000 2 Rev. 1.4